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  1. jafir, Yes, The BP Microsystems EP-1 Programmer...

    jafir,
    Yes, The BP Microsystems EP-1 Programmer is a GREAT Programmer. I've used them for years. All you need is any
    Terminal (or Computer running a Terminal Program). I don't use xmodem...
  2. I sent you a PM. I've done several Dual Boots,...

    I sent you a PM. I've done several Dual Boots, but not on Win 7 or Win 10. XP was the last OS I used
    as Dual Boot. Windows may not play well with Linux now.

    Shouldn't take too long to find...
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    CH, Just make sure the RAM has 7 Bit refresh...

    CH,
    Just make sure the RAM has 7 Bit refresh rate versus 8 Bit refresh. It HAS to be 7 Bit Refresh rate.

    Just check each Conductor feeding it's load with your Meter (with Load(s) disconnected...
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    One thing comes to my mind is with the memory...

    One thing comes to my mind is with the memory upgrade. The Original RAM IC's used -5 VDC, from a supply
    on the Aluminum Metal Back plate that is behind the Motherboard. The -5 VDC goes to Pin 1 of...
  5. REF:...

    REF:
    http://www.vcfed.org/forum/showthread.php?34037-Resurrecting-a-IBM-5150-601-code-at-POST-Need-some-help

    Along with the above suggestions, are the switches on block 1 switches 7 and 8 set...
  6. Ian, Thanks for the update. As you determined...

    Ian,
    Thanks for the update. As you determined I'm Hardware versus Software.

    Good Luck.

    Larry
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    In going back over my posting I found three...

    In going back over my posting I found three typo's in these definitions:


    cpmtools definition
    maxdir 64

    libdsk definition
    cylinders = 40

    flashfloppy definition
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    drj113, I've conjured up some definitions that...

    drj113,
    I've conjured up some definitions that should allow you to access the files. If you have Dave Dunfield's
    Imagedisk Ver 1.18 you can create the .IMD files from your floppy's. Then also...
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    drj113, I don't know what a Pulsar 6000 is, but...

    drj113,
    I don't know what a Pulsar 6000 is, but I assume it runs CP/M ver x and is Z80 based. What type of Image
    files do you have available on your SDcard. What software created, or copied the...
  10. Ian, Try this. 10 Z=48 20 W=Z 30...

    Ian,
    Try this.


    10 Z=48
    20 W=Z
    30 FORX=0TO1023
    40 POKE15360+X,W
    50 IF (PEEK(15360+X) AND W)<>W GOSUB 500
    60 IF W<96 THEN W=W+1 ELSE W=Z
  11. Ian, Let me change the program a bit so it can...

    Ian,
    Let me change the program a bit so it can be delayed when it located a problem and waits for
    your input. I see that my logic is flawed when there is a problem.

    I'll try to get that done...
  12. Ian, Run that program and be ready to depress...

    Ian,
    Run that program and be ready to depress the BREAK key to stop it when the screen starts messing up.
    Take a good screen shot of it. From that information we should be able to get the address...
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    Do you know what your Osborne Exec has: 1. 40...

    Do you know what your Osborne Exec has:
    1. 40 Track (48 TPI) or 80 Track (96 TPI) Floppy drives?
    2. Single Sided (SS) or Double Sided (DS)?
    3. What Definition did you use for the GOTEK (Floppy)...
  14. Does your Model 1 have the extra 2102 static RAM...

    Does your Model 1 have the extra 2102 static RAM added for the Lowercase modification?
    Does it have lowercase characters? What is the number on your Character Generator ROM IC?


    What ROM...
  15. I conjured up this basic program to go through...

    I conjured up this basic program to go through the characters and see if what is in the displays
    memory was the same as what was inserted. Give it a try.



    10 Z=48
    15 W=Z
    20...
  16. There are 7 - 2102 Static RAM's for each bit of a...

    There are 7 - 2102 Static RAM's for each bit of a row & column matrix for the Characters. Plus one
    MCM6870 Character ROM. I wouldn't think it would be the Character Generator if all the proper...
  17. A Picture of before and after would be nice and...

    A Picture of before and after would be nice and the actual keystrokes depressed for the bad result.

    16K Keyboard, or Expansion Interface and 48K? In Basic or DOS Prompt? What OS?

    Larry
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    Why don't you Power ON the Model 3 and do a few...

    Why don't you Power ON the Model 3 and do a few tests with the keyboard to see if the Model 3
    Is locked up or if it will respond to the keyboard and change things on the Display. With the messed...
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    If you are interested in knowing more about the...

    If you are interested in knowing more about the TRS-80 M3 Characters that are contained in the Character ROM,
    the following BASIC Programs will display all the available characters on the TRS-80 M3....
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    Nope, I was wrong the Model 3 uses a different...

    Nope, I was wrong the Model 3 uses a different routine to clear the screen.



    01C9 3E1C LD A.1CH ;HOME CURSOR
    01CB CD3A03 CALL 033AH ;SMALL CHARACTER
    01CE 3E1F ...
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    The character you are seeing on the Display is...

    The character you are seeing on the Display is 0x90. You should be able to pull the ROM's and
    then Power Up to see if you are getting a display full of @9@9@9@9 that fills the display.
    That should...
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    You can easily prevent that by holding the BREAK...

    You can easily prevent that by holding the BREAK depressed, Turn Power ON, then when you see
    Characters on the screen, release the Break key and tap the ENTER key 2 times.

    Larry
  23. I compared again with your updated version and...

    I compared again with your updated version and found two more typo's in your update.


    380 IF NOT LMOD THEN L$=LT$(LCUR) : LMOD=TRUE
    390 CIN$=RIGHT$(L$,MAXW-SCOL)+" " : PRINT CIN$;


    Larry
  24. The README.TXT file in the "cprocpm6.zip" has...

    The README.TXT file in the "cprocpm6.zip" has this extra information, about
    DISK1.IMD and DISK2.IMD.




    Larry
  25. Is your "TRS-80 Voice Synthesizer demonstration...

    Is your "TRS-80 Voice Synthesizer demonstration program" loaded from Cassette tape or from
    Floppy (Virtual Floppy) as ASCII or Tokenized Basic?

    Try the CMD "T" then cload your basic program and...
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