Image Map Image Map

Search:

Type: Posts; User: feipoa

Page 1 of 3 1 2 3

Search: Search took 0.02 seconds.

  1. I replaced the power transistor with the...

    I replaced the power transistor with the STMicroelectronics BDX34C and now the Evergreen Spectra module outputs the proper voltages. I didn't need to change the LP2951C voltage regulator chip. Looks...
  2. Yes, tried that before posting. The interposer...

    Yes, tried that before posting. The interposer takes its power from the 5 V molex, so I don't think the socket would matter much with respect to seeing 2.2 V at Vcc2. The interposers are outputting...
  3. Help fixing socket 5 upgrade module - Evergreen Spectra 333 - Vout does not adjust

    I have an Evergreen Spectra 333 upgrade module which I use in a dual socket 5 NEC Proserva V Plus along with a Kingston upgrade module. Both modules are set to 2.8 V and are running the Pentium 233...
  4. Replies
    14
    Views
    1,015

    Nice juicy information. Thank you. In the year...

    Nice juicy information. Thank you.

    In the year 2020, such questions mostly stem from hobby interest. It would make for a very unique collector's item to have a dual P100 upgraded to dual...
  5. Replies
    14
    Views
    1,015

    Interesting information. I remember those beowulf...

    Interesting information. I remember those beowulf clusters being somewhat popular among some enthusiasts in the 90's.

    I cannot recall the name of the system, but there was a system which had two...
  6. Replies
    14
    Views
    1,015

    For socket 5, yes they would need to be placed in...

    For socket 5, yes they would need to be placed in a split-rail VRM interposer module, e.g. those from Evergreen, Kingston, etc.

    The Tillamook did come in a PGA varient that works on some desktop...
  7. Replies
    14
    Views
    1,015

    Dual socket 5 with P266 Tillamook's

    According to Intel's datasheet, the following features have been eliminated in the low-power embedded Pentium processor with MMX technology: Upgrade, Dual Processing (DP), and Master/Checker...
  8. Replies
    0
    Views
    173

    WTB Evergreen Spectra 266 or 333

    I'm looking for an Evergreen socket 5/7 CPU upgrade, the Spectra 266 or Spectra 333. They were one of the more common socket 5/7 CPU upgrades. It should have P55C-K6-L2 printed on the underside of...
  9. Need help updating the onboard SCSI portion of a socket 5 BIOS

    I have an NEC Proserva V Plus PCI/EISA-based system, which contains a dual Pentium 200 motherboard from Zenith Data Systems. The Proserva systme is the same as a Zenith Z-Server WL system.

    I...
  10. Back in the day I used VoptNT for defragmenting...

    Back in the day I used VoptNT for defragmenting my drives in NT4; I hadn't heard of Diskeeper.
  11. Replies
    38
    Views
    3,281

    Not to sound racist, but all those keyboards are...

    Not to sound racist, but all those keyboards are black, and... gosh, have USB! Anything quiet, beige, and PS/2?
  12. Replies
    38
    Views
    3,281

    This may be a silly question, and no doubt I am...

    This may be a silly question, and no doubt I am ill educated in this subject, but are there any quiet "mechanical keyboards"?
  13. Replies
    38
    Views
    3,281

    I'm only able to find USB versions for some...

    I'm only able to find USB versions for some reason.
  14. Replies
    38
    Views
    3,281

    Oh well. I guess I should have kept that...

    Oh well. I guess I should have kept that keyboard, but when I would type, it would keep the other people in the house up - it was that loud. Also, I could type faster on a new rubber-based...
  15. Replies
    38
    Views
    3,281

    Are such clickety keyboards desirable? I used to...

    Are such clickety keyboards desirable? I used to have one of these. It was from the late 80's and made such a ruckus when typed on. I trashed it more than 20 years ago and have never had regrets. ...
  16. Why did 386 motherboards use CLK2 and later motherboards use CLK?

    I noticed that all my 386 motherboards send CLK2 to the CPU whereas my VLB- and PCI-based socket 3 boards send CLK to the CPU. Why did older motherboards send twice the clock frequency to the CPU,...
  17. Brief update. The adapter will POST when using...

    Brief update. The adapter will POST when using an 8 MHz oscillator. The CPU defaults to non-clock-doubled mode, meaning when its booting, its running a 4 MHz. Only one of 5 motherboards tested...
  18. Cimonvg. Thanks for responding. Unfortunately,...

    Cimonvg. Thanks for responding. Unfortunately, the FLUSH circuit information is unrelated to the CPU turning on or not. Most 486DLC-aware motherboards have this FLUSH circuit built onto the...
  19. For the communication lines, I used 30 AWG, which...

    For the communication lines, I used 30 AWG, which according to google, is 0.254 mm. The average length of the wires is around 2", or about 50 mm. Some are only 1/2", while I think the longest might...
  20. It would be pretty straight-forward to add more...

    It would be pretty straight-forward to add more capacitors in parallel to the VRM circuit. Add another 10 uF? 100 uF?

    Also, I do have two busses. If you view the higher resolution image on the...
  21. Thanks for all the comments, it is very helpful....

    Thanks for all the comments, it is very helpful.

    Keep in mind that the 486SXL2 runs, by default, at half of CLK2, unless you adjust one of the registers once the unit is powered up for 2x mode. I...
  22. How to troubleshoot a 486SXL2 upgrade CPU with an oscilliscope

    I am having some trouble getting this PGA168 to PGA132 prototype interposer board working and am seeking assistance with troubleshooting. I am trying to get a TI 486SXL2 in the PGA168 package to...
  23. BIOS needed for Diamond Stealth64 DRAM T VLB(86c764-P and 86c764X)

    I am looking for the BIOS image dump from a Diamond Stealth64 DRAM T VLB card, which is a Trio64 and uses either the 86c764-P or 86c764X chip. I am looking for BIOS revision 2.02 or later. Thanks!
  24. Is L2 cache on 386/486 motherboards parallel (look-aside) or serial (look-through)?

    I have been looking through some 386 chipset datasheets, but do not see mention to the L2 cache being serial or parallel.

    I found some definitions for the differences between the two online.
    ...
  25. Thank you for your suggestions. I will look into...

    Thank you for your suggestions. I will look into your procedure if I fail in the following.

    It seems that AWDFLASH has the ability to:

    /CC = clear cmos data after programming

    /CD = clear...
Results 1 to 25 of 63
Page 1 of 3 1 2 3