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Type: Posts; User: Bmurching

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    Wanted: [real/working] 8087-2

    Why? I donít know... I want to try one on my Compaq Deskpro. Iíd need a 8MHz or 10MHz model. Iíve been through two eBay specials and am giving up sourcing one of these from the China-based sellers....
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    That seller listed 50,000 items in a very short...

    That seller listed 50,000 items in a very short period of time; all have high prices with no images, but there are a number of hard to find components listed. I asked for a photograph of one...
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    This is an interesting and somewhat unique...

    This is an interesting and somewhat unique computer. The oldest, slowest Pentium in a chassis with only ISA slots. It’s an early model though, so good chance of a FDIV bug CPU, and it is slim and...
  4. If you're seeking to be thorough, I would imagine...

    If you're seeking to be thorough, I would imagine using something like Kryoflux against a reference capture of reference media would be the most robust approach. What that would look like, however,...
  5. I'm not too conversant with a logic probe......

    I'm not too conversant with a logic probe... which is to say I've never used one. So, it took a while to learn about it, find and purchase one (Elenco LP-560) and learn to use it! It's a handy...
  6. Ah, it's been a long time since I saw one... they...

    Ah, it's been a long time since I saw one... they looked like glass from a distance :)

    I've been keeping an eye on eBay; I've seen a couple pop up but sense that these were used with mice...
  7. Glass grid mouse pad for 80s optical mouse

    I have an old Mouse Systems mouse (M2) and would like to find an appropriate mouse pad for it. Iíve experimented with the Al foil + transparency solution and it works but is not so great. Hoping for...
  8. Continuing to work this... I realized the...

    Continuing to work this...

    I realized the wd1002a ROM was not the 62-000094-xxx version recommended so I managed to get another controller with the right BIOS. this drive’s debug LLF seems to...
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    Aluminum restoration

    In short... tips for restoring the finish of aluminum components in vintage computers? Examples would include the case frame, expansion slot covers, drive bay adapters, and even screws. While I do...
  10. Checked, I think I have it correct. It's...

    Checked, I think I have it correct. It's interesting how the ST225 has so few jumpers whereas the ST4096 has so many, many, many different jumper blocks...
  11. This turned out to be the right answer as to why...

    This turned out to be the right answer as to why the ST225 (formatted with the Everex controller) was throwing errors during fingerprinting with Spinrite. I have that second ST225 drive (has some...
  12. Progress! I received a WD1002A-WX1 controller....

    Progress! I received a WD1002A-WX1 controller. After some work, the controller seems to work with my existing ST-225 that was formatted with an Everex EV-391.. I can see the logical drive and...
  13. Is this to suggest that controllers can or cannot...

    Is this to suggest that controllers can or cannot support both encoding schemes?
  14. Hi, Looking at the OP, I see you were using a...

    Hi,

    Looking at the OP, I see you were using a 16 bit MFM controller. In another thread on this forum I was told that 16 bit controllers will not work in 8 bit slots which I thought this computer...
  15. Meaning the controller supports both encoding...

    Meaning the controller supports both encoding schemes?
  16. I should restate my question more clearly: I...

    I should restate my question more clearly: I understand the difference between MFM and RLL, and am trying to understand how to identify whether a card is the ST11R or ST11M. I searched through some...
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    It's been a while... various updates below. But...

    It's been a while... various updates below. But first, yes, that is a Mouse Systems mouse! It is the model M3. The computer came with neither the special pad nor the power brick. I have a Big Bag...
  18. Thanks Stone, are those controllers definitively...

    Thanks Stone, are those controllers definitively supporting the ST-4096? Iíve had trouble confirming with certainty.

    Does anyone know how to tell the difference between the ST11R and the ST11M?...
  19. Looking for 8-bit MFM controller for a ST-4096 drive... suggestions?

    As per the title...

    I have been looking and seem to keep finding,
    - 8 bit controllers w/o stated support for this drive
    - 16 bit controllers that do support it, but no clear evidence the...
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    Does anyone have benchmark data (any tool) on the...

    Does anyone have benchmark data (any tool) on the ST-225 drive? In order to baseline where I'm at today, I'd like to compare the current setup against some reference points. Reason I ask is that...
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    Interesting; what do you use Xenix for on this...

    Interesting; what do you use Xenix for on this hardware? (Or put differently, what can you do?)
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    I don't mind a repro at all... while I'd like to...

    I don't mind a repro at all... while I'd like to see this computer eventually become the best possible version of itself... baby steps.

    Some great progress... received a coin cell for the clock...
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    It's been a while since I last posted (covid ->...

    It's been a while since I last posted (covid -> work from home -> a lot of work lately) but I was able to spend some time this weekend working on the computer. It's in great shape now!

    Updates
    -...
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    Posts take some time for moderators to approve......

    Posts take some time for moderators to approve... the above note was a couple of days ago and I've made progress.

    Both floppy drives work. Motherboard switch was set to 1 drive only (strange). ...
  25. Wanted: Compaq Deskpro XL hardware (CPU cards or PCs)

    I'm super interested in getting to know this PC a bit more and perhaps have a companion to my XL 590. I'm looking for:
    - processor cards newer than the P90: P120, P133 etc. Or entire units.
    - I'd...
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