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  1. I managed to use PTR.EXE downloaded from Corel's...

    I managed to use PTR.EXE downloaded from Corel's site (since it wasn't included in my copy of WP). Then I just tested all character codes on the printer and mapped them accordingly. Worked like a...
  2. Printing international characters on typewriter printers (WPDOS 6.2)

    Hi,

    I'm trying to print from WordPerfect 6.2 (DOS) to my Hermes Toptronic 15, which is a simple typewriter with a printer interface.

    This works fine, with the exception of international...
  3. My google skills are obviously not on par, I've...

    My google skills are obviously not on par, I've tried looking all over for this! Thanks!

    Ok, so if there is some special adapter from 36 pin to 50, I might not be searching properly (50 pin always...
  4. Does this printer support Centronics interface? Qume Letter Pro Plus

    So I have this printer that seemingly, based on the connector (50 pin micro ribbon), uses some kind of SCSI/SASI interface.

    41433

    However, the connector on the back is replaceable (it connects...
  5. I've managed to get the machine somewhat running,...

    I've managed to get the machine somewhat running, enough to make a lot of d's for you :) As you can see, it seems like the right part of the d bulges a bit - is this what you were talking about?
    ...
  6. David_M: What part of the board would that be,...

    David_M: What part of the board would that be, and what do they do? :)
  7. Not sure if it's related, but the display can...

    Not sure if it's related, but the display can handle two characters per position simultaneously. For example, an "" would be comprised of two superimposed characters, "e" and "". Could it perhaps...
  8. I guess I should replace the rest of the counters...

    I guess I should replace the rest of the counters on the board as well. But I'll wait until my hot plate comes in the mail, I've learned the importance of preheating the hard way :D

    Some circuits,...
  9. Awesome! :D I finally managed to socket some...

    Awesome! :D

    I finally managed to socket some of the ICs, one of them which I had fried while trying to debug the board. There's quite some thermal capacity on the board, so I had to be a bit...
  10. This is taking some time, I had to get new solder...

    This is taking some time, I had to get new solder equipment, parts and spare time. However, while waiting I dumped the character EPROM. Trying to look at it as an 8x8 font it seems kind of skewed....
  11. Neat! Gotta get some of those, look like real...

    Neat! Gotta get some of those, look like real time savers! How tall are they?
  12. I've found some counters that might be a bit...

    I've found some counters that might be a bit wonky - but then it worsened. I suspect that me soldering wires to the ICs to test them in the cramped space wasn't a very good idea, as I might have...
  13. I would seriously have been lost without you,...

    I would seriously have been lost without you, Chuck(G) :) :)

    Looked at the screenshots with rested eyes, and realized the 105 does indeed seem to work in tandem with the 106, the pulses are longer...
  14. So I probed the 2 counters (IC 105 and 106,...

    So I probed the 2 counters (IC 105 and 106, SN74LS191N, 4bit counters). I had to solder wires to the pins of the ICs and hang them outside of the case, since the spacing between the boards are too...
  15. Thanks! Maybe I'll dare to ping him :) Do you...

    Thanks! Maybe I'll dare to ping him :)

    Do you think the SRAM buffers the contents in the EPROM, or could it be that the system actually supports more than one font? Given the memory size, it...
  16. So I noticed the 6x1024 bit SRAM in the lower...

    So I noticed the 6x1024 bit SRAM in the lower right corner of the video board (AM9101DPC) - at first I thought "aha!", but it doesn't seem like enough memory to hold a screen of characters. Not to...
  17. Sorry, just added it to the post :)

    Sorry, just added it to the post :)
  18. Ok, so I decided to be a bit goofy and replace...

    Ok, so I decided to be a bit goofy and replace all electrolytic capacitors and observe the behaviour some more.

    The double keypresses are gone, but symptoms now seem to be narrowing down:


    ...
  19. Ok, I realized I didn't measure the correct pin....

    Ok, I realized I didn't measure the correct pin. So here's Φ2 on the 8224 which is TTL clock out:

    3750737508

    Looks ok, but is rise time a bit long here?


    I also measured CLK OUT from the...
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    What a beauty :D What state is the HDD in?

    What a beauty :D What state is the HDD in?
  21. Thanks for taking the time, Chuck(G), I knew I...

    Thanks for taking the time, Chuck(G), I knew I probably had missed something obvious. Please pardon my poor skills!

    Had a quick session before having to go to the office (groan), if anyone would...
  22. Hm, nice tip! I have to figure out where that...

    Hm, nice tip! I have to figure out where that goes then... (and seriously up my skills :))

    I tried mucking a bit more with it, and noticed that the keyboard registered double presses (there's a...
  23. Certain screen columns repeating themselves (text)

    Hi,

    don't know exactly what to make of this, I was sitting in the evening typing on my word processor (Raytheon VT302), and then suddenly the screen glitched, different characters were shown and I...
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    I guess I have other problems right now. Refitted...

    I guess I have other problems right now. Refitted all caps but the unit seems rather dead. No light on display. Except when turning off, then the display flashes briefly (just a bunch of small 0's)....
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    2,365

    So I've replaced all the capacitors, except one...

    So I've replaced all the capacitors, except one that puzzles me. All the other ones had polarity markings both on the capacitor and the board, but this one doesn't. It's markings are similar to the...
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