Image Map Image Map

Search:

Type: Posts; User: gp2000

Page 1 of 13 1 2 3 4

Search: Search took 0.01 seconds.

  1. Sticky: I've got to get better at hauling out my phone to...

    I've got to get better at hauling out my phone to snap some pictures. At least I did take a video of me pawing through the auction table.


    https://www.youtube.com/watch?v=8aQIxeuzxb8

    Or...
  2. Replies
    5
    Views
    372

    The Model I ROM has no idea if the lower case mod...

    The Model I ROM has no idea if the lower case mod is installed. The code at $468 translates ASCII values into values that work with the 7-bit Model I VRAM. This includes translating lower case to...
  3. Replies
    6
    Views
    378

    BREAK should do it. Is your BREAK key broken?...

    BREAK should do it.

    Is your BREAK key broken?

    Try this little program:

    10 CLS
    20 PRINT@0,PEEK(14400);:GOTO20

    I suspect it will show 0 even when you hold on the BREAK key. As opposed to...
  4. The BASIC ROM determines memory size by checking...

    The BASIC ROM determines memory size by checking each byte from the bottom of memory on up (or close to the bottom). A 48K Model III will show 48082 for ?MEM so to translate the memory size to the...
  5. Very nice. Did you copy the CRTC settings from...

    Very nice. Did you copy the CRTC settings from one of the CP/M's that do that or figure them out yourself?
  6. BTW, trs80gp only has Aculab floppy tape...

    BTW, trs80gp only has Aculab floppy tape emulation and not yet Exatron Stringy Floppy.
  7. Replies
    1
    Views
    395

    trs80gp version 2.1.2 released

    trs80gp is a TRS-80 Model 1, 2, 3 and 4 emulator for Windows that runs well on OSX and Linux under Wine.
    You can download it at http://48k.ca/trs80gp.html

    Biggest new feature is built in EXPORT2...
  8. That's fantastic! Well done.

    That's fantastic! Well done.
  9. Replies
    8
    Views
    920

    This is very satisfying. Very satisfying indeed!...

    This is very satisfying. Very satisfying indeed! Thanks again.
  10. Thread: Running object

    by gp2000
    Replies
    2
    Views
    366

    For a pure machine language program you assemble...

    For a pure machine language program you assemble it to a "/CMD" file (e.g., MYPROG/CMD). You can then run it by typing "MYPROG" at the DOS command prompt.

    If you're using a cassette example it...
  11. Replies
    8
    Views
    920

    Thanks! I tried adding an extra decimal but...

    Thanks! I tried adding an extra decimal but found the key value was skipped. I also tried moving the "LD DE,8" up front to no avail but the constant got closer. I didn't try using BC instead of...
  12. Replies
    8
    Views
    920

    The BASIC program I posted wasn't terribly robust...

    The BASIC program I posted wasn't terribly robust as any new variable declared would move the location of U% in memory. In fact, the code itself did that but it only meant the first few bytes of the...
  13. Fully assembled and tested for me. It would be...

    Fully assembled and tested for me.

    It would be perfect if BigTMon could download and run code from the RS-232 similar to what the Model 4P can do. Actually, it doesn't have to be that fancy. ...
  14. Whatever it is, I'll do it twice. :)

    Whatever it is, I'll do it twice. :)
  15. Replies
    8
    Views
    920

    Here's some code to play a simple tune which is...

    Here's some code to play a simple tune which is basically a copy of William Barden Jr's "OPUS1" pure machine language example from his "TRS-80 Assembly Language Programming" book. Lines 1000 .. 1030...
  16. I looked at the Model II technical bulletins...

    I looked at the Model II technical bulletins here: https://github.com/pski/model2archive/blob/master/Hardware/Model_II_Technical_Bulletins_Searchable.pdf

    II:025 suggests damage will occur. At...
  17. You must be talking about this one (at least I...

    You must be talking about this one (at least I hope there aren't others):

    https://www.ebay.com/itm/TRS-80-Microprocessor-System-Tandy-Radio-Shack/323787186034

    That price is way out of line.
    ...
  18. Replies
    6
    Views
    815

    The reliably explosive RIFA capacitors. Here's a...

    The reliably explosive RIFA capacitors. Here's a good page on repair:

    http://www.akhara.com/trs-80/psrepair/index.html

    My understanding is that you can just safely run with them clipped out. ...
  19. Replies
    13
    Views
    1,872

    Yes, there was a lot more to Level II BASIC which...

    Yes, there was a lot more to Level II BASIC which is why it had 3 times the ROM space. Even then, it didn't exactly fit. ROM BASIC only supported the cassette for saving and loading programs. Disk...
  20. Replies
    13
    Views
    1,872

    The TRS-80 Model I first shipped with Level I...

    The TRS-80 Model I first shipped with Level I BASIC in a 4K ROM with 4K of RAM. Shortly after Level II BASIC came along that fit into 12 KB of ROM. Both were absolutely written in 100% Z-80...
  21. Replies
    1
    Views
    421

    TRS-80 Discord Server

    There's a new Discord Server dedicated to TRS-80 computers. Here's the invite link:

    https://discord.gg/NUHAMtz

    Discord is a multi-media chat very similar to Slack if you've used that. You'll...
  22. Replies
    16
    Views
    1,576

    The sound persisting when focus is lost is quite...

    The sound persisting when focus is lost is quite baffling. The operating system itself silences audio so nothing should be heard. I've been unable to reproduce the problem. Here's something to try...
  23. Replies
    16
    Views
    1,576

    I'm glad to hear you're finding it useful. ...

    I'm glad to hear you're finding it useful.

    Definitely features I'd like to see in some form. trs80gp's internals fight against changing the configuration in the GUI due to static initialization...
  24. Replies
    16
    Views
    1,576

    Thanks for the bug reports. Peter is looking...

    Thanks for the bug reports. Peter is looking into this one. Do you happen to know if this bug appeared in the previous release?



    Well, obviously the problem is that TRSDOSII doesn't know the...
  25. Replies
    16
    Views
    1,576

    trs80gp version 2.1.0 released

    trs80gp is a TRS-80 Model 1, 2, 3 and 4 emulator for Windows that runs well on OSX and Linux under Wine.
    You can download it at http://48k.ca/trs80gp.html

    There are quite a few changes but better...
Results 1 to 25 of 322
Page 1 of 13 1 2 3 4