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Type: Posts; User: eeguru

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  1. Replies
    8
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    154

    It's more than that. You NEED the '245. Even if...

    It's more than that. You NEED the '245. Even if you put a pull on the unbuffered ISA bus, there are strong PUs and sometimes totems on motherboards that will still cause indeterministic levels when...
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    8
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    154

    Your design in somewhat of a sub-set of the...

    Your design in somewhat of a sub-set of the JR-IDE project. You can find all my source files in the svn link on the left sidebar of this page:

    https://www.retrotronics.org/jride




    You...
  3. Replies
    153
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    11,905

    And it doesn't help that certain music...

    And it doesn't help that certain music holding/publishing companies will hire bounty companies that just do nothing but scan videos independent of the hosting service (mainly YouTube) just to file a...
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    88

    Have you been spying on me for the last decade?!?

    Have you been spying on me for the last decade?!?
  5. Replies
    22
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    700

    You would have to write twe different values -...

    You would have to write twe different values - one to the main CGA window and a different one to the aliased window / back to back - then read from either. It's a very contrived use case. I doubt...
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    700

    I don't see how that's possible. The only...

    I don't see how that's possible. The only electrical stress issue would be if a high side and low side driver are turned on at the same time causing a low impedance path between 5V and GND (aka a...
  7. Yes.. the only thing worse than micro USB is...

    Yes.. the only thing worse than micro USB is micro USB 3.0! I'm not sure I still have any products that came with one that isn't broken off.
  8. Bitching, ranting, yelling, or any such diatribe...

    Bitching, ranting, yelling, or any such diatribe about mini-USB is never considered a 'rant'. I always consider it well thought-out rational sane exercise in perfectly normal critical thinking.
    ...
  9. It's literally what it says it is. It is a SDLC...

    It's literally what it says it is. It is a SDLC adapter (Synchronous Data Link Control). It's a synchronous serial (RS-232) card likely used for connecting to an IBM SNA network.
  10. That is a IBM 5250 TwinAx Terminal Emulation...

    That is a IBM 5250 TwinAx Terminal Emulation card. The DA-15M goes to a TwinAx dongle.
  11. Replies
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    3,801

    I had assumed in the OP's original video, he was...

    I had assumed in the OP's original video, he was doing base-band video straight off the hard drive. 320 x 200 x 8 bits LUT color * 8 fps * 60 sec per min * ~5 min clip / 8 bits per byte = ~146...
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    1,022

    I was about to bring up Diablo. Not sure if...

    I was about to bring up Diablo. Not sure if those qualify as 'Xerox' products or not but they did carry the name plate after the acquisition. I gave away two 3200s a few years back as I had no...
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    456

    Wait... this won't work?...

    Wait... this won't work?
    https://www.retrotronics.org/images/ultimate_jr.jpg
  14. Oh sure.. you just have to rub in the fact you...

    Oh sure.. you just have to rub in the fact you have a working JX that isn't smashed into a million plastic bits like mine! :(
  15. They are rare but do occasionally pop up. I'm...

    They are rare but do occasionally pop up. I'm aware of a couple owners that want unrealistic many thousands of $$ for systems - including a complete 5360 in Auburn, AL that was doing some sort of...
  16. I just wish you had put the connector and riser...

    I just wish you had put the connector and riser plate on the correct side. It is meant to go downward, not up. It would have just taken 1 more spin. So you are using up two plus slots with this...
  17. I will add 'has anyone tried ELKS on a 1000' to...

    I will add 'has anyone tried ELKS on a 1000' to the pondering as well...
  18. I explained all this in the thread I linked...

    I explained all this in the thread I linked above.... sigh.
  19. I had disassembled, annotated and dumped the ROM...

    I had disassembled, annotated and dumped the ROM code and the FAT12 file system from the HX ROM before. You can find more details starting here in this thread:
    ...
  20. Not sure about the morality police. From the...

    Not sure about the morality police. From the traceroute and ping above, it looks like he's getting all the way to the VCF server and hitting a firewall there.



    It appears this is his problem. ...
  21. If you have a pair of calibers, it would be a...

    If you have a pair of calibers, it would be a pretty straight forward project to translate the design into an EDA tool (like the FOSS KiCad). iTead will make flex circuits up to 10 cm for a pretty...
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    Very nice work!

    Very nice work!
  23. Replies
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    1,645

    Pre-made ATX to AT power adapters are currently...

    Pre-made ATX to AT power adapters are currently on eBay for $8. Past eBay sellers listed ATX I/O shields that had the single large DIN cut-outs for AT MBs, but I'm having trouble finding them now. ...
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    9,781

    Poll: I get necro-threads... but necro-polls? It no...

    I get necro-threads... but necro-polls? It no longer has complete choices... let it die please! (or start a new one)
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    All of the above sporadically for several months...

    All of the above sporadically for several months now including recent days and only vcfed.org.
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