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Home / I-Opener Areas / I-Opener Technical Stuff SW3...SW4....Correct Setting? Setting for P200mmx

SW3...SW4....Correct Setting? (modified 0 times) ckbone Profile I've got a V4 running a P200mmx. It has a set of dip switches on SW3....I'm running default settings. What are the optimal settings...if any..for this setup? I'm puzzled..Do some boards have a SW4 rather than SW3? And what is the difference? 08-01-2000 15:48:44

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile My V5 has dip switches for both the SW3 and SW4 locations. SW3 is set to all OFF and appears to be for manufacturing test. SW4 is a two position dip switch for setting the processors core voltage (2.8/2.6/2.2/2.0) and by default is set to all ON (2.8 volts). I have not seen a V4 but from your post it sounds like it does not have an SW4 between the processor and memory socket (near the NN in FOXCONN). The SW1 switch position is used to set the multiplier which is preset to 3x by resistor R130. I removed R130 and moved SW3 to the SW1 position so I could adjust the multiplier. I was trying to get a Pentium 200 MMX to run at 233MHz but it would not run (post ok but die or be unstable in Win98) until I dropped the core voltage to 2.6. If you can not change the core voltage then the default 3x is probably your max speed. The original RISE processor does not seem to even use the settings from SW1. 08-01-2000 16:23:45

RE:SW3...SW4....Correct Setting? (modified 0 times) ckbone Profile Hey thanks.....I don't have the case apart. If it's there, should I be able to see it through the ram door?(I can't) Do you think Sandra 2000 pro benchmarks are an indication of an optimally setup system? With this P200mmx, overclocked to 210mhz (SoftFSB), I'm seeing benchmarks of 439 cpu, 235 fpu. 08-01-2000 16:58:06

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Yes, if the switch is there you can just see it with the RAM door off. Black rectangle with two little white switch tops visible. Sandra numbers vary a little but yours are close to what I was seeing at 210 MHz. I get 517/277 with Sandra Pro when running at 245MHz. 08-01-2000 17:56:47

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile OK, now does this mean that I can use a K6-III without the Powerleap "98" in this machine (have not gotten the case open yet but suspect that it has the newer chip, date on box is 2000/07/07)? If so, what is the fastest K6-III that it will support, from what we know sofar? Thanks in advance Visit http://www.dc2600.com 08-02-2000 07:45:38

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Actually, I was about to run a test last night with a K6-III but I got side tracked swapping in the V5 BIOS for a sound chip test to try to get that working and ended up killing my Win98 Harddisk. Spent the night reinstalling Win98 (moving harddisk back to a notebook for reinstall). Will try again tonight. To keep the power down I will first try running at 66MHz and a 3.5 multiplier. Voltage is 2.2 if I recall correctly. Keep your fingers crossed. 08-02-2000 08:01:57

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile Very anxious to find out. Good luck. I do have a K6-II 200 to use for now, but for the application I am modding the IO for a K6-III will work much better. I have been reading the CPU upgrade threads but still sort of lost on multipliers, etc. and figuring out beforehand how fast a chip the board will support, i.e., is a K6-III 350 overkill? What about 400? The ones I think I can get are either 2.2v core or 2.4v core and right now it sounds like the 2.2v match an achievable voltage on the board? Wow, that sounds even more clueless than where I thought I was on researching this, but now all of these threads are blending together... Thanks guys! Visit http://www.dc2600.com 08-02-2000 08:19:19

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email The K6-III 333 ($29.95 at Fry's, rumoured to be an OEM notebook chip that got dumped on the gray market because of oversupply and heat problems) is very stable at 83 x 4 in my desktop. I'd like to underclock it to 66 x 4 or 60 x 4 in an IOpener, but I still think it will exceed the current limit on the IO 2.2v switching regulator. I haven't run the benchmarks yet, but Linux rates it at 660 BogoMIPs at 83 x 4. The chip feels faster than other CPUs with similar BogoMIPs ratings, because the on-chip 256k L2 cache is clocked at the full core clock speed. This labelled as the AMD-K6-III/333AFK, with 2.2v core and 3.3v I/O. Anybody know what the AFK means? Is it better or worse than the AFR and AFX? My guess is that it is a smaller temperature range. 08-02-2000 10:39:10

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile The AMD-K6-III/333AFK chip is the one I will be testing tonight. The K,R,X are temperature ratings. Notebooks run hotter (no or small fan) so they need a higher rating. K = 0-80c R = 0-70c X = 0-65c 08-02-2000 11:07:15

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Ok, I have completed my first set of tests with the AMD-K6-III/333AFK chip from Fry's ($29.95) and it is a GO. Works even better than the Pentium 200 MMX in that I don't have to power cycle it a few times or hit the reset button to get it to boot up. It worked so well I went right down to Fry's and got seven more. Don't worry, each store has about 1600-1800 of these and it looked like there were eight or more stores. Be sure to check the number of the top of the chip. One of the seven was marked AFR-66 and very hard to read. I asked for an AFK like the other six. Now that I think about it it probably was not even a K6-III which runs at 95 MHz not 66. Even the invoice showed the AFR designation but did list speed at 333MHz. The max speed I have tested so far is 280MHz which is a multiplier of 4 and a FSB speed of 70MHz. Q16 is at around 50c and the core voltage is set to 2.0 volts. Seems Netpliance has been listening to our troubles with changing the core voltage and came up with SW4 on the V5 Iopener to keep us happy Thank you very much. Now for the numbers from Sandra 2000 Pro. P=Pentium MMX K=K6-III Processor...Rise....P-200...P-233...K-233....K-266...K-280 Test ----------------------------------------------------- CPU..........424.....395.....463.....593......678.....711 FPU..........201.....224.....264.....281......322.....338 MMX..........460.....419.....487.....619......708.....742 FP/3DNow.....163.....154.....180.....860......983....1030 The K6-III runs in the Iopener at either 2.2 or 2.0 volts. I plan on doing some temperature measurements of Q16 for each voltage. I assume that Q16 runs cooler at 2.2 (less of a drop) than at 2.0 but I may get higher clock speeds from 2.0 since it is less total power. When the speed is too high the power supply shuts down. When I tried 100MHz FSB it died but the multiplier might have been at 4x. More tests to come... I always have MBProbe running when doing the tests. Since I have an external supply for the CPU Fan it has saved me several times when I forgot to turn it on. 08-02-2000 21:16:52

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email Thanks, Turbo3! This is definitely great news. Just look at the way it blows away the P-233MMX like it's standing still. A few quick questions: If I use passive cooling (stock IO heatsink), does it make contact or is it too high or too low? At 83x4 in my desktop with a heatsink but no fan, it gets appreciably hot, but remained in equilibrium and was stable throughout (the AFK rating helps, I guess). At 66x4 and 2.0 V, I expect it will consume about 30-40% less power, so it should manage with passive cooling, *if* the heatsink makes contact. Secondly, I assume you're testing on a V5. Is there a way to drop the core voltage to 2.0 V on a V4 as well? 08-02-2000 23:19:32

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile I removed the fan/heatsink and reinstalled the original large heatsink. The K6-III needs the cavity in the V5 heatsink and seems to come very close but does not seem to touch the thermal pad in the cavity. I put in a liberal amount of silicone compound to fill the gap. I had earlier milled out the bottom of the heatsink just enough for the IDE cable so I could keep the hard disk attached but hanging for this test. Running for about 10 minutes the CPU temp was up to 63c. But the CPU thermal sensor is off to the side of the Socket 7 so I think it is more likely the power supply temp. I have not seen a V4 but as far as I know no one has reported the SW4 core voltage switch by the memory socket. So I thing only the V5s have it. There are other earlier threads that talked about ways to add/change resistors on the earlier versions to get the voltage down. As I recall they came close to but did not get to 2.0 and they reported that Q16 got very hot. Best would be to reverse engineer the V5 core power supply and retro fit it to the earlier ones. Q16 is a different part number on the V5. It is 6030L on the V5 and 28N03 on my V2s. This may or may not be important and I have not been able to locate data on either of these parts. 08-03-2000 00:33:27

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile One more thing, my second K6-III would not run the second set of Sandra tests (MMX/3D Now) at the 280MHz speed. The power supply would shut down. So it seems 280 is chip dependent. I will know more when I cycle the other six parts through the tests. The lowest power requirement is getting the BIOS screen, then starting windows, and last is running the Sandra tests which puts the most strain on the CPU power supply. You don't have a stable clock rate unless you can run Sandra or some other processor stressing program. 08-03-2000 00:44:29

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email Thanks, Turbo3. The gap between the top of the CPU and the heatsink cavity can also be filled with aluminium foil - a bit of Reynolds wrap folded a few times should do the trick, with a bit of the white heatsink compound to help things along. I'm going to Fry's tomorrow to pick up a few of these puppies. They're great for general-purpose desktop upgrades, too. 08-03-2000 00:49:06

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email As mentioned by Turbo3, Vcore (CPU core voltage) is set by SW4 on a V5. For reference, the settings are: Pos .2. .1. Vcore --- --- ----- off off 2.0 V off .on 2.2 V .on off 2.6 V .on .on 2.8 V As always, the engineers at Quanta have shown an outstanding consistency in connecting the lsb to the low-order index of the switch position. Using the the default FSB and PCI clock settings (66/33), the default multiplier (3x) and Vcore at 2.2v, the AMD-K6-III/333AFK (underclocked to 200 Mhz) is a drop-in upgrade that handily outperforms anything else for this socket. No fan required, either, so it's as quiet as the stock IO. 08-04-2000 03:43:27

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile So, theoretically, what is the fastest that a K6-III can go in a v5? I am pretty sure that mine is a v5, since it has the switches next to the memory stick (unless I misread or just missed one of the bazillion posts on this topic Now for some Badflash BIOS, a hdd cable, a 12v to 19v converter, deep cycle 12v battery, isolator, the kb from my WebSurfer... and I will be ready to mount this puppy in the Jeep! Visit http://www.dc2600.com 08-04-2000 07:58:32

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile We only know what will work by testing it out since we don't have the spec for the core voltage supply. I have no trouble getting 4x66 (266) to work and 2 out of 3 samples run at 4x70 (280). This is with the Fry's AMD-K6-III/333AFK chip. 08-04-2000 09:16:01

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email To GuyMontag: The limit is really not the CPU heat dissipation, it is the dissipation in Q16, which drops Vcore from 3.3v to 2.0 to 2.8v, depending on SW4. It's a simple linear regulator (not switching) and Q16 doesn't have a heatsink, it is only soldered to the PCB. In the interests of longevity of this part, stick to 3x66, 3.5x66 or 4x66 maximum, as suggested by Turbo3. I'm using 2.2v and 3x66. Perhaps 2.0v and 3x66 will run even cooler, notwithstanding the larger drop, because the current will also drop with voltage scaling (smaller swings, so the charge required to charge the internal gate capacitances is lower, etc.). But YMMV. 08-04-2000 12:09:09

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile Thanks Linuxguru1 OK, here is what I have (finally took the RF shield off): Rise MP6 266 (2.6v core, 3.3v IO), no goop, no cut pins, SW3 has the tiny 4 switch pack (all off), SW4 marking (2 switches, both on), AD1881 sound chip. Shipping tag date was 2000/07/07, inside of case label is 2000.06.22 (rev 3B like every other one made ever I guess). If the ebay auction I am on for a K6-III 333 fails before tomorrow I will hop on an auction for a 350 or faster. Will play around with it some and will make a heatsink for Q16 with some copper foil, attach with silicone heatsink compound (or is something else better for attaching small heatsinks?). My plans are to have it running as fast as possible without needing a fan, will use either the aluminum foil hack (maybe copper) to make contact between the chip and heatsink. BTW, my board has 2 SanDisk chips just below the IDE header. One has pins on 4 sides, the other has pins on only 2 sides. I don't remember others bringing that up. Have been reading the threads about disabling the SanDisk (I will be running a HDD and a CD, so I need to kill SanDisk anyway) but still not clear on which one is the one to disable. Off to put in a Badflash order! Thanks guys, good luck and thanks for your work on this too. 08-05-2000 14:40:35

RE:SW3...SW4....Correct Setting? (modified 0 times) ckbone Profile Why do you want to hack off your sandisk? This can be tricky....you don't need to do it to get a cdrom working. My sandisk just got bumped off when I installed a cdrom.....http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=1509&Idle=10&Sort=0&Order=Descend&Page=0&Session= 08-05-2000 15:24:36

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile CKBONE, Actually, I have no intention of hacking off the SanDisk, just plan on unsoldering 2 of the pins (as soon as I figure out the right chip and pins). Just ordered new BIOS and cable, looking things over on how I will custom install the Haitachi 6G drive and WebSurfer IR reciever. Not planning on removing anything but the old BIOS and all the pix I have seen of some other installs had the modem removed, so this looks like it will just get more interesting. Visit http://www.dc2600.com 08-05-2000 16:32:28

RE:SW3...SW4....Correct Setting? (modified 0 times) ckbone Profile Trying to unsolder even a few pins on the sandisk could prove a disaster....there are numerous posts here testifying to that. Why bother? Having an external hard drive is the way to go......I can have mine out of the base in a minute or so...no more lost scerws. And having a cdrom in the system makes this I-Opener hack worth all the trouble. 08-05-2000 16:55:52

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile ckbone, Mainly because it is going in my vehicle and I want as much "stuff" inside this thing as I can get (keeps down the clutter). Need to keep the overhead down on the USB ports too (I *think* that is a factor) since I will be hooking up several other devices through there as well as hooking this box to other systems that will be in the Jeep. Finally found the thread with the info I was looking for: http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=1026&Idle=&Sort=&Order=&Page=&Session= Just unsolder 1 pin and add a resistor. This appears to be the "proper" way to hack this part and a portion of my goal is to ADD as much inside the box as possible while removing as little as possible. BTW, looks like the HDD will go directly over the modem, with a little standoff to keep from shorting it, and (hopefully) clear the RF shield. Visit http://www.dc2600.com 08-05-2000 18:06:16

RE:SW3...SW4....Correct Setting? (modified 0 times) -pyr- Profile GuyMontag: I still find myself wondering why anyone would see the need to do anything to the sandisk. as long as you properly configure both cdrom and HD the sandisk will automatically bump itself off. to test this I attached my hard drive as master. Sandisk took slave. I shutdown, attached the cdrom as slave (thru a cable I have running out of the memory door) reboot, and there it is, HD as master, cdrom as slave, and sandisk nowhere to be seen. So, unless your reason is purely paranoia about QNX somehow managing to phone home by itself (and honestly, what difference would that make? so youd have to reflash the sandisk with the old image, so what). Turbo3: V4s do have the switch on them (I could swear I already posted that.. probably in another thread). someone brought up the possibility of there being 2 v4 variants, but I expect that the switch is there for the rise cpu and so it would be there on all V4s. 08-06-2000 10:17:10

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile pyr, Actualy, I was unaware of that. Will try it your way first. Thanks! Visit http://www.dc2600.com 08-06-2000 14:09:08

RE:SW3...SW4....Correct Setting? (modified 0 times) alvin Profile Where is this fry's can you purchase online.. do they have a web site 08-06-2000 17:34:03

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile alvin, fry's locations: http://www.frys.com/localfram.htm did not see anything on ordering online, but I was getting their catalogs a few years ago, cool stuff. Visit http://www.dc2600.com 08-06-2000 18:03:12

RE:SW3...SW4....Correct Setting? (modified 0 times) alvin Profile Anyone know if this fry's ever one is talking about has a website you can by the AMD-K6-III/333AFK 2.2 CORE/3.3V I/O chip on.. for this 29.95. Otherwize I am willing to buy on from some one that can get it for me and mail it. I will pay $60.00 including the shipping to any one that can.. Please email if you can do this for me alvin@pointonline.net Thanks 08-06-2000 20:26:27

RE:SW3...SW4....Correct Setting? (modified 0 times) asm_ Profile I just got one today from Fry's today. I can get one for you Alvin. After I start up the IO at 2.2v 200Mhz, the CPU is much cooler than the RISE. Have any one try this speed with only heatsink? 08-06-2000 22:47:43

RE:SW3...SW4....Correct Setting? (modified 0 times) alvin Profile Thank too all the emailed me, I have one on the way now. 08-07-2000 00:16:34

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile I've been reading this thread and it makes me want to modify my V3 to support dual voltages. However, I have searched in vain and can't find Codeman's original MMX hack instructions, only references to it. Does anyone know where it is or can repost the instructions? Thanks. 08-07-2000 11:32:16

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile Ordering from Fry's go to: http://www.frys.com/localfram.htm Pick a store, call them up, order. They take phone orders and will ship. Ask them to make sure that it is an AFK stamped on the chip, they will check that too. Really glad that I lost that e-bay auction now Other items: cheers to Badflash, he has my BIOS on the way, Patrick <plm@laescuela.com> should be shipping a PS for the Jeep this week. Still waiting to hear from Linux-Hacker.net on IDE cable (I know they are busy, so not complaining at all). Going to try out 256 Meg ram at a friend's place tonight, maybe. Heve not read much about using more than 128 Meg other than lots of people had trouble, but lots had trouble with anything bigger than 32 Meg anyway, will see what happens. Visit http://www.dc2600.com 08-07-2000 12:53:27

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Here are the changes I will be testing out tonight so I can run the AMD K6-III in a V3. To do the change you will need a 25K and 102K resistor plus the resistor to set the vcore (none need for the 2.0 settting). The other parts are just moved arround on the motherboard. To allow multiplier changes by switch do the following: Remove R130 Move SW3 to SW4 Split supply: Move R60 and R61 0 ohm resistors to R184 and R185 Set Reference voltage to 2.0 (not the vcore): Install 25K resistor in R342 Install 102K resistor in R343 This is an 80% divider to drop the 2.5 ref down to 2.0 Allow vcore adjustment: Install 10K resistor in R203 (can use 10K from R342 or R202) Remove 10K from R202 and replace with: nothing to give 2.0 core 100K to give 2.2 core 33K to give 2.6 core 25K to give 2.8 core These changes should change your V3 core supply into a V4/V5 core supply. 08-07-2000 12:56:07

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Sorry, that should read: Move SW3 to SW1 (SW4 is the vcore switch on the V4/V5) 08-07-2000 14:59:43

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Ok, the change to the V3 core power supply works. I have it set for 2.0 and am running the AMD K6-III at 266 MHz in an "old" V3. Note: The temperature being reported for the CPU is actually from sensor RT2 which is close to the copper foil connected to Q16. So it is really measuring Q16's temperature (or tracking it). The motherboard sensor is actually underneath the CPU on a V3 and next to the 2.5 regulator on a V4/5. This explains why people have had trouble lowering the CPU temperature with different heatsinks. A fan helps because a small amount of air gets exhausted over the top of Q16. You can test this by spraying "canned air" on the sensors and seeing which one drops in MBProbe display panel. Have not found RT3 yet. 08-07-2000 19:40:14

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Can someone please post some pictures of where these parts go? I have a what I thought was a v4. It has no switch between the memory and CPU. It has a date inside of "REV3B 2000.06.12" and had a RISE processor and a Yamaha chip. It now has a AMD K6-III 333 but without setting the MB correctly I hesitate to use the new CPU. I have experience overclocking other computers. Going from the rated 2.0-2.2 to 2.8 can damage a CPU chip over time. It also causes more heat than we want. More voltage = more heat to get rid of. Therfore I have to change the supply voltage. Ideas? Do I have an "early" V4 or a "late" V3? Thanks all. 08-07-2000 23:14:19

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Astrogoth: Actually we would need a picture of the area between the memory and cpu sockets. But not having that I will give you some things to look for that might help. But first, DO NOT power up with the AMD until you have verified the core voltage is 2.2 or less. You could measure the lower left leg of Q16 (cpu socket above memory socket orientation). The Rise uses 2.8v so you must change something before running the AMD K6-III. With the cpu socket towards the top and the memory socket towards the bottom look near the right corner of the memory socket for two resistor pads R342 and R343. These are the ones previously reported to allow 2.2 volts. Are they both populated (the chip marking might be 39C and 020) or is only R342 populated (10K part 103)? Since you have a Rise I am betting both are populated. Here is a list of the resistor sites between the two large capacitors C165 and C166 for my V3 and V4/V5 boards. They are listed in left to right order. V3: R200,R202,R203,R204,R207 V4,V5: R200,R202,R347,R348,R349,R203,R204,R207 Not all of these may be populated and R348,R349 are actually where SW4 goes but might be zero ohm resistors on your board. If you do have zero ohm resistors for R348,R349 then removing both should give you a 2.0 core voltage. It is possible to make either board generate the 2.8 that the Rise needs or change it so they generate the 2.0-2.2 that the AMD needs. Let me know what you find. 08-08-2000 00:20:40

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile OK, ugh, will update other post about ordering from Fry's in a sec. Yesterday, when ordering a K6-III, Fry's was glad to take down my name, address (billing and shipping), phone, CC# and exp. date. They even checked to make sure that it was an AFK chip! Sofar, so good. They were going to call me and tell me if everything was as I asked and tell me what the shipping charges were. Well, the guy taking my order did not know that his phone would not call Virginia, so several hours later, I called back and he had all info except shipping. Gave him my e-mail address and asked him to e-mail the info. He said OK, but I had to repeat the address, very slowly, several times. I began to wounder if this guy knew what e-mail actually was. Today, no e-mail, no idea if order was placed, no idea what the shipping charge will be and I am on the phone right now with a different Fry's employee every 5 min. (between hangups and "someone else does that") trying to find out SOMETHING. It is pretty amazing that yesterday, any joe-blow that picked up a phone could take an order, but now NOBODY knows how to contact a manager or the status of my order. BTW, the last person I spoke to was a car sterio sales person, even though I asked specifically for a manager. Visit http://www.dc2600.com 08-08-2000 08:54:48

RE:SW3...SW4....Correct Setting? (modified 0 times) jimmyjam Profile Hi all. I think that I have a old old v2 that I just got around to hacking. Where is the sw4 switch? I've looked all over for it, and I can't seem to find it. I can clearly see the sw3 switch, but no luck with sw4. And with a v2 iopener, am I just out of luck if I want to run a k6-iii at anything close to its rated clock/bus speed? I know about codeman's hack to make it a split voltage power source to the cpu, and I've read this thread on how to modify the reference/core voltage, but hwo do I change clock speeds? Thanks. 08-08-2000 10:44:24

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile The clock frequency change is the easiest. Just get the program SoftFSB from oda's site and you can change it in Windows. The switch position for it is just under the edge of the modem card. But I have not had much luck above 70MHz which is not really worth putting a switch in for. 08-08-2000 11:19:08

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Turbo3: Well, I have a v3 it seems. Thanks for the resistor help. Only R342 is there and I have no place or markings for SW4. Guess my AMD K6-III will require more research for use with my v3. 08-08-2000 11:48:58

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Astrogoth: If you have a V3 then the changes I have listed previously will convert it to a V4/5 at the selected core voltage. I already have a V3 running the AMD K6-III. You don't need an SW4. All you need is a couple of resistors and someone with the skills to change the SMD parts. 08-08-2000 12:11:11

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Ok, new highs for the AMD K6-III. I have replaced R302 the 3.5 volt bulk supply current sense resistor with a 0.012 1W one instead of the 0.015 it comes with. This gives me 25% more current to use for Vcore before the supply auto shuts down. It really does help and my Iopener has not caught fire yet . Here are the numbers running at a 5x multiplier and 66 MHz for a 333MHz clock rate (just what the chip is marked for) using Sandra 2000 Pro Update. CPU=846 FPU=402 MMX=884 3DNow=1227 08-08-2000 13:53:36

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Forgot to mention this is running on a V3 without an SW4 just using the resistor changes reported above. 08-08-2000 14:01:24

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Turbo3: Can you give me a landmark near R348 and R349? Can't find them. Thanks. 08-08-2000 14:53:58

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Turbo3: Skip that last request. My v3 won't have any R348/349. Where do you get your SMD parts, such as your latest R302 upgrade? I can se I'm going to need some parts soon! 08-08-2000 15:11:45

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile The R302 can from an old Intel I980 board I had laying around the office. I just got lucky and it had the 0.012 ohm resistor on it. I was using it to practice removing SMD parts and when I looked at the little pile of parts there it was. I did lose it on the floor yesterday when it fall out of the box I thought was closed. It was very hard to find in the hallway. I would guess that DigiKey must have them. They are a must if you plan on going above 233MHz. 08-08-2000 15:21:45

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile R302 details: The one I used was a 0.012 ohm, 1 watt, 1%, 2512 (size), Dale WSL-2512-R012 DigiKey also has some for about $2.69 each by Panasonic DigiKey #P12MCT-ND. 08-08-2000 21:39:36

RE:SW3...SW4....Correct Setting? (modified 0 times) Indy Profile Turbo, would you happen to have the digikey part numbers for the necessary resistors (100K, 102K, 25K)? I'm not sure of the necessary specs. Also, when you took your V3 to 333, was voltage at 2.0, or 2.2 ? Thanks in advance... 08-09-2000 19:45:08

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Don't have the DigiKey numbers for those resistors but do a parts search for "smd resistors" then select "chip" then you can refine the search with size 603 tolerance 1% and I think the wattage is 1/10. I have had the best luck running at 2.0 volts but Q16 (reported as the CPU temperature) can hit 70c+. At 2.2 the Iopener supply would autoshut down during Sandra testing. I am currently testing 2.1 which is a 200K R202. The formula for the resistor value for any core voltage greater than or equal to 2 is: 2 * (10K/(Vcore-2)) = R202 So for 2.1 it is: 2*(10K/.1)=2*100K=200K Don't forget to order a new R302 DigiKey #P12MCT-ND should be a 0.012 ohm 1W 1% 2512 and two CT2184LPST-ND DIP Switch half pitch 4 Position so you can set the multiplier and clock frequency. The higher the Vcore the cooler Q16 runs since it is dropping less voltage. But a higher Vcore causes the Processor to draw more current and limits how fast you can clock the processor. The trick is to get the processor to run as fast as possible while drawing just a little under the current limit of the 3.5 supply while trying to keep Q16 from cooking the electrolytic capacitor C166. Looking at the DigiKey catalog I would guess the cap is good to 85c they have others good to 105c and they are only rated to 1000 hours. I have done some testing at 5x70 and 3.5x95 and am starting to think a fan on Q16 is more important than one on the CPU . I will be on a camping trip until Sunday and will answer any other question when I get back. 08-09-2000 21:09:39

Q16 Heat (modified 0 times) InspectHerGadget Profile | Email Hear's what I did with my V4: 1. Added switch from SW3 to SW1 2. Changed Multiplier to 4X 3. Changed Voltage to 2.2v for my K6-2 4. Kicked Her Up to 100mHz on SoftFSB This made poor lil Q16 damn hot so I went to Rat Shack and bought a small lil heat sink and some heat compound. I epoxied the side of the heat sink to the processor socket and luckily it held nice and snug in all directions. Now I run at 400mHz w/ a K6-2 w/ a Lasagna. The CPU temp stays around 41 degrees C and the entire temp is at about 45 after about 2 days w/o turning it off. Its not getting any hotter so I guess that about does it for me. ON TO THE COMPACT FLASH!!!!!! Only after we've lost everything can we really do anything. 08-10-2000 12:58:05

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile Is there an alternative to SoftFSB for UNIX users? The clock changing and tweeking area is where I am VERY deep over my head. But I will not let it stop me from learning. Visit http://www.dc2600.com 08-10-2000 13:27:53

RE:SW3...SW4....Correct Setting? (modified 0 times) Indy Profile Went to my local Fry's today in Anaheim and found that they only sell the "AFR" version. Also called the one in Burbank and in Fountain Valley. They too only claimed to have the AFR version and no one was willing to check to see if there were any AFK in the lot (so much for customer service). The lady at Anaheim even claimed that they HAD AFK, but sent them all back last month because they weren't into selling "laptop" CPU's! Could those who were able to purchase the AFK please tell me which location had it? And if I'm not able to find one, would AFR suffice, or would it run too hot? 08-13-2000 23:27:42

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Got mine at the Redondo Beach Fry's. Just as you found, Fry's computers don't list the AFK chip. I had to ask the sales girl to put the "AFK" letters on my sales slip. The kid in the "chip cage" knew right away what I wanted. No problem there. They said they had "lots in stock". I was there looking for the SMD parts for my V3. No luck. Nuts! MD 08-14-2000 00:48:55

RE:SW3...SW4....Correct Setting? (modified 0 times) alvin Profile Can any one tell me the date on the box from the I-opener that they have, that has the sw3 and sw4 switches. 08-14-2000 07:59:19

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile alvin, mine is 2000/07/07 Visit http://www.dc2600.com 08-14-2000 11:25:06

RE:SW3...SW4....Correct Setting? (modified 0 times) pete7000 Profile I have a V4 with V1 bios and AMD k6 333 What is the set up on the SW3 thank you 08-14-2000 15:41:29

RE:SW3...SW4....Correct Setting? (modified 0 times) alvin Profile GuyMontag, And your has both switches. I have one dated 6-14- 2000 and that one doesn't have both , trying to figure when the date of the ones with the sw3 and sw4 started shipping. and is that a manufacturing date. 08-14-2000 18:45:57

RE:SW3...SW4....Correct Setting? (modified 0 times) Kudzu Profile I just stopped by the Fry's in Wilsonville, Oregon, yesterday and all the 333's they stock are AFK. Apparently people have been returning the AFK 95MHZ for the AFR 66MHZ, so they've got a large stock of AFK's. If you haven't been able to find them anywhere else, I'd give them a call. By the way, does the SMT stock in all Fry's stores stink as much as in this one? I couldn't find any of the necessary parts for the IO mods. Kuzdu I can't believe I made a 206 mile trip just to get to Fry's. 08-16-2000 17:08:40

RE:SW3...SW4....Correct Setting? (modified 0 times) Kudzu Profile Regarding the R302 DigiKey #P12MCT-ND resistor. Is it possible to order these in singles, or only the 10 pack? I only need 2, and really have no use for the rest. 08-16-2000 18:17:45

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email Regarding SMT stuff at Fry's: They seem to have only 1206 or larger footprints. No small outlines, not even 0805. No SMT ferrites. No zero-ohm resistors. No resistor networks. No low-value (< 1 ohm). Fortunately, I was able to locate some of the stuff in small quantities elsewhere. Otherwise, Digi-Key is the only option. 08-16-2000 18:36:49

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile Okay, thanks to Turbo3's instructions I modified my V3 to support the K6-III. It seems to work fine, but any time I try to run Rain/Waterfall/Cpucool to cool it down a bit it locks up. I've never seen this behavior before. Any suggestions? Also, I bought size 1206 resistors at Fry's to convert my V3 to dual-plane voltage, but I really needed 0603 size. I got it to work, but as this was my first attempt at SMT part soldering it is really ugly and took probably 20 attempts to get them to stick. I got really lucky and found the other parts I needed on dead boards from my office. 08-16-2000 21:04:57

RE:SW3...SW4....Correct Setting? (modified 0 times) asm_ Profile Does any one know where I can purchase the mini DIP switch that is used in SW3 so I do not have to remove it from SW3? ASM 08-16-2000 23:32:22

RE:SW3...SW4....Correct Setting? (modified 0 times) Kudzu Profile Something like this? http://www.digikey.com/scripts/US/DKSUS.dll?KeywordSearch Input CT2184LPST-ND to find it. :) 08-16-2000 23:41:37

RE:SW3...SW4....Correct Setting? (modified 0 times) Kudzu Profile http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=whatever&Post=1441&Idle=0&Sort=0&Order=Descend&Page=0&Session= Turbo3, will the alternatives itsvincer listed in this thread work for the R302 upgrade? 08-18-2000 00:15:53

RE:SW3...SW4....Correct Setting? (modified 0 times) itsvincer Profile | Email Turbo3, Got another one for ya; rather than un/solder resistors, why not just clip another resistor over R302 in parallel. It'd be easier if you've many to modify, or just don't want to try soldering in such a narrow space. Clipping a .06 ohm resitor in parallel still yields .012, although I admit I don't know right now how I'd clip it on. :> 08-18-2000 05:28:27

RE:SW3...SW4....Correct Setting? (modified 0 times) pete7000 Profile what is the sw3 for and what are the settings / 08-18-2000 06:33:22

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile pete7000, Most of the time we have to tell people to use the search feature. In your case, let me get you aquainted with the scroll feature. Scroll up to the post made at 08-04-2000 03:43:27 A.M. by Linuxguru. Use either your arrow keys or the page up/down keys. Need another answer on this topic? Scrol some more, it is probably in this thread. Simple as that. 08-18-2000 06:55:01

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile I have modified my V3 to dual plane voltage, got the core voltage set to 2.06, and the K6-III powers up okay. However it was locking up shortly after going into Win98, and programs like Rain/Waterfall seemed to be causing it. I slowed it down to 167MHz but still got lockups, so I replaced R302 with the appropriate Dale R012 resistor that fortunately I had on a dead board from work. It seemed to help the situation and I could then run the cpu cooling programs, but eventually it locked up too. However, during the last round I had the case off, so it took longer for everything to warm up. I'm running with the stock heatsink, with a chunk cut out for mounting the hard drive. Based on Turbo3's info about the thermistors, the hot spot seems to be motherboard so I am assuming it's Q16, which is the 28XXX not the newer device. I was going to bump the core voltage up to 2.2V and try that, but Turbo3's experience was that was worse. So, any suggestions as to what could be causing the problem? I've only seen Q16 get up to about 70C so far and 50C on the cpu so I don't think it's heat. Thanks! 08-18-2000 07:18:14

RE:SW3...SW4....Correct Setting? (modified 0 times) pete7000 Profile Hi GuyMontag I got the setting for the SW4 How about SW3? 08-18-2000 10:14:52

RE:SW3...SW4....Correct Setting? (modified 0 times) pete7000 Profile I have 4 V4 flashed all to V1, all have the SW3 AND SW4 with yamaha chip. Could not find anythig about the setting for the SW3 in the last wk. Also I have 4 AMD k6-III 333 AFK. What are the best settings for this CPU. 08-18-2000 10:41:21

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile Well, I ran it with the cover off, running the cpu stability test for 90 minutes, and it ran fine. Put the cover on, same test rebooted by itself after about 20 minutes. According to the BIOS, the cpu was at 51degC and the m/b at 65degC. I let it stay in the BIOS for about 10 minutes with no problem, rebooted Win98 and it locked up just as it was completing its boot. I believe I have a thermal problem that for some reason is affecting Win98, so I am going to epoxy a heatsink onto Q16 and see how it goes. 08-18-2000 12:21:15

RE:SW3...SW4....Correct Setting? (modified 0 times) Randy Profile Zogg, by chance did you happen to use a hard drive that you had used before with an earlier version i-opener? In other words, was this a hard drive you took out of a v3 and put into the v4? The reason I'm asking is that I upgraded a v4 with the K6-3 chip, and it also locked up when booting Win98. When I tried it with a fresh installation of Win98 on another hard drive (never used in an IO before), everything was fine. In my case, I suspect the problem is the Yamaha audio drivers we've all used in the earlier IO versions. It seems to choke the v4 i-openers. I hope you read this message and respond... inquiring minds want to know! Randy 08-18-2000 12:36:00

RE:SW3...SW4....Correct Setting? (modified 0 times) humanoid Profile Greetings, gang. Time for me to de-lurk. I bought a V2 quite a while ago and I'm slowly creeping up on getting it hacked. I've go the BIOS changed, I've got a disk drive and I've got half of the cable built. (I've been waiting to finish it until I figure out how to mount all the stuff in the case). I am also lucky enough also have two of the K6-III AFK's. All that stated, it looks like the solution to getting the parts for modding older units to work with the P6-III is to make a bulk buy from Digi-key. I'm willing to buy the parts and kit them, if 4 or more other folks are interested in buying the kits from me. I haven't come up with what should be in the kit, how many spares (I'm practicing my SMD soldering, but I don't know if it's possible to destroy any of the resistors if you really screw up) etc., so any suggestions on kit composition from interested parties would be appreciated. Post with your email address (or a link to somewhere I can find it) if you're interested and let's discuss this. 08-18-2000 14:44:31

RE:SW3...SW4....Correct Setting? (modified 0 times) Indy Profile Humanoid, your kit should include the 25K resistor (Digikey only has the 24.9, which I think will do), the 102K resistor (which they are out of stock on), and the .012 ohm 1215, which they have plenty of but need a minimum order of 10 @ $2.69/each (I think). You might want to include the 100K for those who want to take it to 2.2, and the two DIP switches. If you can get all this together and only charge a couple bucks above cost, I'll take one. digikey part numbers: P249KCCT-ND P102KCCT-ND P12MCT-ND CT2184LPST-ND javawinq@hotmail.com 08-18-2000 15:50:50

RE:SW3...SW4....Correct Setting? (modified 0 times) why0 Profile Here is the list I need: 8- DIP Switch half pitch 4 Position - - - CT2184LPST-ND 4- 0.012 ohm, 1 watt, 1%, 2512 (size) - - P12MCT-ND 4- 25K resistor - - - - - - - - - - - - - - - -P249KCCT-ND 4- 102K resistor- - - - - - - - - - - - - - - -P102KCCT-ND 4- 100K resistor- - - - - - - - - - - - - - - - P100KCCT-ND junk@ambrotose.com 08-18-2000 19:00:51

RE:SW3...SW4....Correct Setting? (modified 0 times) ravton Profile | Email Humanoid - I'm in for the bulk buy. ravton@yahoo.com 08-18-2000 23:29:34

RE:SW3...SW4....Correct Setting? (modified 0 times) why0 Profile If a 100k resistor is labled '103 '. How are: 25K 100K 102K & 0.012 ohm, 1 watt, 1% labled as? If I can find these off of a dead board it would save me a trip to the Parts Ordering Circus. 08-19-2000 15:32:43

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile Randy, No, this is the same hard drive I have been using all along with my V3 (the only I-Opener I have). The only difference is the processor. I have contemplated reloading Win98 because I have seen cases like this before on other PC's that required a fresh install to fix. I'll probably try it on Monday as the box is at the office. 08-19-2000 15:46:21

RE:SW3...SW4....Correct Setting? (modified 0 times) why0 Profile Correction If a ' 10k ' resistor is labled '103 '. How are: 25K 100K 102K & 0.012 ohm, 1 watt, 1% labled as? If I can find these off of a dead board it would save me a trip to the Parts Ordering Circus. 08-19-2000 16:10:46

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile SMD resistors do not seem to always follow a common standard like the old color band standard you see on regular resistors. 25K would be "253" but on the iopener it is "39C" 100K would be "104" but on the iopener it is "010" 102K is "020" on the iopener The SMD resistors I am using do not have any markings at all. You need an ohm meter if you mix them up. The 0.012 1W resistor could be labeled "R012" but the ones from DigiKey are labeled "12M" 08-19-2000 18:15:14

RE:SW3...SW4....Correct Setting? (modified 0 times) YouBecha Profile To help others... I have a V5 whatever. There is a set of soldering points to the right of the CPU labled SW 1. This is the Clock multiplier. I think stock is set to 3x. (dropping in a AMD 300 only comes up as 200(66x3=~200)) see CPU upgrade thread SW4 is the Core voltage. this needs to be adjusted to use the AMD K6 series. see this thread Nobody knows what SW3 does, but it is assumed to be just for testing purposes...if you are daring you could de-solder SW3 and put it on the SW1 pad. then you would have adjustable voltage and speed. 08-20-2000 16:46:13

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile YouBecha - Many of us have safely moved SW3 to the SW1 pads. SW3 isn't used in normal operation so it's okay. --- Referring to my earlier posts, before I did anything I fired it up this morning and let it run for a while. K6-III running at 167MHz w/ modified original heatsink, CPUcool reported temps of 42C and 52C. Kicked off CPU Stability test for 90 minutes and the temps went up to 52C and 70C. Assuming the lesser temp is the CPU, it slowly increased in temp, but the higher temp, assuming near Q16, shot up like a rocket. But NO lockups this time. I picked up a heatsink from Radio Shack (unfortunately the only parts place nearby) for 1.49, p/n 276-1368. It looks like I can cut off 2 of the 4 fins, attach it to the stock heatsink with epoxy or a screw, heatsink compound between top of Q16 and the heatsink, and it should help at least some, which is all I want. I'll let you know. 08-21-2000 14:10:06

RE:SW3...SW4....Correct Setting? (modified 0 times) humanoid Profile Um, dumb question. Where on the motherboard is R302? I can't seem to find it. 08-22-2000 04:21:57

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile R302 is one of the two large resistors between the group of four large capacitors and the two large black square inductors to the right of the power jack. 08-22-2000 07:46:55

RE:SW3...SW4....Correct Setting? (modified 0 times) Zogg Profile Turbo3: I put my heatsink on Q16, set the multiplier back to 3x from 2.5x for the K6-III, and fired it up. It will only run for a minute or two before it locks up or resets itself. It isn't running long enough to even get warm. I'm beginning to think that it's a current problem, even with the 0.012 resistor in R302. It seems to run pretty well at 167MHz but at 200MHz gets flaky. What do you think? Unfortunately I'm leaving town and can't try anything else until Monday but I'm sure open to suggestions. 08-22-2000 12:36:43

RE:SW3...SW4....Correct Setting? (modified 0 times) Turbo3 Profile Zogg- Here is the bad news. When I tested five of my K6-III 333MHz in a machine fixed at 66MHz and 2.0 core I found that each had a different maximum multiplier setting. They went from a low of 2.5 to 4.5. I first thought that at least the 2.5 one must be a bad chip so I retested them all yesterday in a desktop machine that runs at 95MHz, 2.2Vcore, and 3.5x multiplier and they all worked just fine. I currently have one iopener running all sealed up in my daughters room. It has the 2.0 vcore change but not the 0.012 current resistor and runs at 3.5x and 66MHz (233MHz). It uses the Lasagna fan and a small heat sink on Q16. Max temp is about 60c. You may need to up your vcore a little. I am using a 250K pot for R202 so I can adjust the voltage. I picked up some small 500K timmer pots from Fry's that I will mount inside the case. Also just got the K6-2+ 500Mhz. It will be a long night of testing. 08-22-2000 16:57:18

RE:SW3...SW4....Correct Setting? (modified 0 times) Deuce300 Profile | Email Humanoid, I'm in for a bulk buy also....fire me an e-mail to deuce300@hotmail.com -Deuce300 08-22-2000 23:17:25

RE:SW3...SW4....Correct Setting? (modified 0 times) humanoid Profile Deuce300 I should have psoted here, I moved the group buy to this thread... http://www.linux-hacker.net/cgi-bin/UltraBoard/UltraBoard.pl?Action=ShowPost&Board=technical&Post=1601&Idle=0&Sort=0&Order=Descend&Page=0&Session=humanoid.9670426209328 Sorry, the group buy closed Tuesday afternoon. I'll post info on the "total experience", including parts list, as a separate thread. Sean 08-23-2000 08:00:25

RE:SW3...SW4....Correct Setting? (modified 0 times) GuyMontag Profile Instead of soldering resistors or DIP switches to set the multiplier, why not try this? http://www6.tomshardware.com/cpu/00q3/000711/amd-02.html One of those silver pens to write the connection across the pads. 08-24-2000 06:31:51

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email Risky. In some cases, there are tracks routed between the pads. If the solder mask is not intact at that point (always a possibility, given that there may have been earlier desoldering/hacking performed on the unit), there could be shorts. 08-24-2000 09:14:36

RE:SW3...SW4....Correct Setting? (modified 0 times) jonluc Profile Getting back to the original question, do V4's have the SW4 switch (if so, where be it)? I have a V4 and see SW1-3, but don't see the the SW4. 08-24-2000 18:10:29

RE:SW3...SW4....Correct Setting? (modified 0 times) starfish Profile The 2nd post in this Thread has the location. Early Version 4s don't have it. Having this switch would make it a V4b Near as I can tell. 08-24-2000 18:25:25

RE:SW3...SW4....Correct Setting? (modified 0 times) YouBecha Profile Anybody know where to get one of those "silver pens"? (look up four or five messages) 08-25-2000 16:33:14

RE:SW3...SW4....Correct Setting? (modified 0 times) kuyote Profile Has anyone documented exaclty what is needed on the V4 iopeners if they only have SW3? Their is alot of information, but from what I see nothing spells it out specifically for these v4's. If someone could let me know I would appreciate it, if I get the info prior to that I will let you know. 08-28-2000 16:34:16

RE:SW3...SW4....Correct Setting? (modified 0 times) Kudzu Profile Check with your local electronics supplier, or see if you have an Active Electronics or Radar INC. in your area. Both chains sell Chemtronics 'silver' pens that should do the job. 08-28-2000 20:13:01

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Anyone who ordered the minimum of 10 P12MCT-ND chip resistors from Digikey have an extra they'd like to trade? I have the 100 and 200k's that I'll gladly trade several of for a single P12MCT-ND 0.012k, 1watt, 1%, 2512 size. Thanks. MD 08-31-2000 12:23:59

RE:SW3...SW4....Correct Setting? (modified 0 times) Linuxguru Profile | Email Astrogoth, I don't have a .012, but I have several 0.025 in exactly the same size as the .015 that's already on the I-Opener. You can solder it piggy-back on the original R302 to get an effective R of .009375, which is close enough, given that the tolerance on the trigger voltage for shudown is +/- 20%. I'd like to trade for a Compact Flash connector that will fit on the I-Opener as per Codeman's mod (actually, I need 5 and I'll trade 10 of the 0.025. These are marked Dale R025). 08-31-2000 17:06:20

RE:SW3...SW4....Correct Setting? (modified 0 times) Astrogoth Profile Linuxguru, Sorry, I don't have any of those. I'd trade several resistors for one of those too! The flash mod is next on my list also. Thanks anyhow. 08-31-2000 18:16:56

RE:SW3...SW4....Correct Setting? (modified 0 times) Pinnacom Profile Ok, So we see lots of references for the SW3 switches to control core voltages So, as I have seen referenced, but so far no direct answer, Just what is the SW4 swiches controlling and what are the settings ? Is this the same as the CPU Multiplier SW1 ? The Bus Multiplier like SW2, or is it something different. Thanks 09-30-2003 14:01:34

RE:SW3...SW4....Correct Setting? (modified 0 times) YouBecha Profile >SW3 is set to all OFF and appears to be for manufacturing test. >SW4 is a two position dip switch for setting the processors core voltage (2.8/2.6/2.2/2.0) >and by default is set to all ON (2.8 volts). Did you even read this thread...this was the second post... http://www.geocities.com/mr_bubba_zanetti/ 10-01-2003 07:05:44

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