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  1. Hello again. Since I last poked into this thread...

    Hello again. Since I last poked into this thread I've installed a Realtek 8019A Ethernet card in my Tandy 1000, and it's starting to look to me like I may have been wrong to blame EPPPD for the issue...
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    That's odd that they couldn't just flip the cable...

    That's odd that they couldn't just flip the cable end-for-end; was the hooded connector on the motherboard installed backwards (on my board at least it does have a key in the correct orientation), or...
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    Yeah, last time I went to the local electronics...

    Yeah, last time I went to the local electronics shop I bought the parts to slap together the circuit (the version that includes the brown fix). I figure I can test it on the 1084 in Analog mode and...
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    An idea I had but discarded (for now) was trying...

    An idea I had but discarded (for now) was trying to make an Osborne/Kaypro style portable out of it. I left enough leash on the keyboard ribbons specifically in case I try revisiting that. ;)
    ...
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    Thanks! Like I said, it was really fun to make...

    Thanks! Like I said, it was really fun to make something like this, even if soldering that massive ratsnest on the back of the keyboard and diddling with the ribbon cable connectors gave me a few...
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    I guess I'll go ahead and drop a link to my...

    I guess I'll go ahead and drop a link to my latest video in here. Technically it features a Tandy 1000 HX, but those of a delicate constitution when it comes to keeping things original may want to...
  7. I'm not going to be hard on Frank here either, I...

    I'm not going to be hard on Frank here either, I think I still owe him an extra thanks for selling me a Model I power supply brick for a reasonable price years ago. All I might suggest is if you're...
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    My vague memory is that the 5154 uses the...

    My vague memory is that the 5154 uses the polarity of one of the sync signals to decide if it's going to run in 200 or 350 line mode. (???) I'd definitely consider it a suboptimal choice for working...
  9. I don't have the original Tandy board to compare...

    I don't have the original Tandy board to compare it with, but it does definitely give me the willies how much insertion/removal force it seems to take to get boards in and out of these machines with...
  10. I haven't tested this yet because I'm currently...

    I haven't tested this yet because I'm currently not caring a lot about cross compatibility with original boards, but my ad-hoc measurements suggest that if I were to use a "double-ended" male header...
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    Never! Best movie EVAR!

    Never! Best movie EVAR!
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    Here's my thread about using USE!UMBS and DOSMAX...

    Here's my thread about using USE!UMBS and DOSMAX on my Tandy 1000.

    http://www.vcfed.org/forum/showthread.php?71371-Experiences-loading-DOS-into-upper-memory-on-an-XT-class-Tandy-1000

    DOSMAX...
  13. So it seems like I've got me a head-scratcher. I...

    So it seems like I've got me a head-scratcher. I went ahead and swapped a V-20 into the HX rig; as a result I was able to verify that ctmouse is indeed fixed by having a V-20... but Kermit wasn't....
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    "C" dates from 1969, and all subsequent revisions...

    "C" dates from 1969, and all subsequent revisions mostly just pick around the edges in terms of formalizing timing and making the standard D-shell connector an official recommendation instead of a...
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    RS-232 is bipolar, with a "1" being at least...

    RS-232 is bipolar, with a "1" being at least three volts positive (the specification says it should be 5-25v, 12v is commonly used for PC serial ports) and a zero specified as -3v (or more, again,...
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    While I'd totally buy at least one ribbon myself...

    While I'd totally buy at least one ribbon myself if the color ones were readily available (in a form likely to work) just to relive the experience I honestly have to say you're not missing much not...
  17. While working on my HX project I noticed all the...

    While working on my HX project I noticed all the weirdness hanging off the keyboard controller. Of course, to make it more fun the EX/HX technically have two chips you could call the "Keyboard...
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    The practical drive size limit for a Tandy 1000...

    The practical drive size limit for a Tandy 1000 is probably 8.4GB; the way DOS versions prior to Window 9x internally represent drive addresses (CHS) for BIOS calls is limited to that. FreeDOS may...
  19. Have you checked the schematic yet to see where...

    Have you checked the schematic yet to see where that goes? Does it just go to the audio amplifier circuitry (via a crude mixer?) to act as a remote speaker for a card, or is it more sophisticated...
  20. Oh, don't get me wrong here, I'm in no way...

    Oh, don't get me wrong here, I'm in no way ragging on the Tandy 1000. The... eccentricities, I'm running into are all part of the fun. I'm just getting amused at how the well of differences between...
  21. The SX was the first 1000 family machine to have...

    The SX was the first 1000 family machine to have the DMA controller integrated onto the motherboard. I'm guessing Tandy concluded that since they didn't need any "extra" lines to implement the DMA...
  22. Bang your skull on the ground hard enough and you...

    Bang your skull on the ground hard enough and you can move the Earth. Here it is, running on IRQ2 using the NE2000 driver.

    57320

    I did go back and double check if it would work with the...
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    Actually the curve/split is there because human...

    Actually the curve/split is there because human shoulders are wider than the letter area of a standard keyboard, which forces the arms to angle inward while the wrists crank outward so the fingertip...
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    The printer can support either XON/XOFF or...

    The printer can support either XON/XOFF or hardware handshaking, but getting the cable wiring correct for the latter seems to be nontrivial. My cobbled together cable seems to work, but the wiring...
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    There are outfits selling the same ribbon...

    There are outfits selling the same ribbon cartridges as compatible with the two printers (example). Whether the Imagewriter II has any interchangeable parts other than ribbons with any particular...
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