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Thread: DMK file creator with support for NewDOS80?

  1. #1

    Default DMK file creator with support for NewDOS80?

    Hi,
    I'm looking to insert a bunch of discrete CMD files into NewDOS 80v2.0 virtual disk images, preferably DMK format.
    I have looked at Matthew Reed's TRS-Tools - and while it can read NewDOS 80v2.0 disk images, it doesn't appear that it can create them - only TRS-DOS and L-S/LDOS.

    This is for use with a MIRE expansion interface replacement device hooked up to my Model 1.
    I have tried creating a new empty TRS-DOS 1.3 DMK - 40 track, SS, DD and mounting it as a virtual drive via the MIRE. When I attempted to reformat it under NewDOS80 v2, it fails with
    "MOTOR FAST"

    Short of making duplicates of my SS SD boot disk DMK file, does anyone have any suggestions on how to create NewDOS80 virtual data disks?

    Jim

  2. #2

    Default

    Biff,
    If you try one of the TRS-80 Emulators, they should be able to do the job for you.
    1. David Keil's Emulator - TRS81.EXE https://ubuntuforums.org/showthread....l%27s+Emulator
    2. Tim Mann's Emulator - XTRS https://ubuntuforums.org/showthread....highlight=XTRS
    3. Matthew Reed's Emulator http://www.trs-80emulators.com/
    4. SDLTRS https://ubuntuforums.org/showthread....ghlight=SDLTRS

    DOSBox - MSDOS Emulator http://forums.debian.net/viewtopic.php?f=16&t=61888

    More Info about .DSK images:
    http://cpm.jenandcal.familyds.org/tr...ack/index.html

    If you zip the files, and supply the DMK you want accessed, I'm sure I can get them inserted.


    Thanks.

    Larry
    Last edited by ldkraemer; December 2nd, 2018 at 04:26 PM.

  3. #3

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    You likely also want the PDRIVE Finder from the last URL.

    I assume you know about PDRIVE and how to set it accordingly.


    Larry

  4. #4
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    Default

    I had a similar prob with NEWDOS and TRSDOS on the HXC. The trick was to disable the RPM test.
    This thread includes a patch for NEWDOS written by Dave Huffman. May or may not fix your problem - worth a try

    http://www.vcfed.org/forum/showthrea...548#post402548

  5. #5

    Default

    Two examples of DMK files created with Matthew Reed's TRS32 and displayed with TRS-Tools. In fact two different already present DMK files were reformatted with NEWDOS/80 v2.0 to provide empty data disks.

    40 tracks, single sided, single density:
    nd80sssd.dmk, filesize 637KB, PDRIVE parameters: TI=A,TD=A,TC=40,SPT=10,TSR=0,GPL=2,DDSL=17,DDGA=2, user disk space under NEWDOS/80: 100kB

    80 tracks, double sided, double density:
    nd80dsdd.dmk, filesize 0.98MB, PDRIVE parameters: TI=A,TD=G,TC=80,SPT=36,TSR=0,GPL=8,DDSL=20,DDGA=4, user disk space under NEWDOS/80: 720kB

    Some formatting experiments:
    The nd80sssd.dmk can be reformatted to 40 tracks with 18 sectors (double density) but not much further extended because of the limited DMK filesize of 637KB.
    You can even reformat the nd80dsdd.dmk to 90 tracks or more. But I don't know if the result would be a reliable virtual disk.

    Attached Files Attached Files

  6. #6

    Default

    Quote Originally Posted by Trash-Eighty View Post
    Two examples of DMK files created with Matthew Reed's TRS32 and displayed with TRS-Tools. In fact two different already present DMK files were reformatted with NEWDOS/80 v2.0 to provide empty data disks.
    Were those two images created using thew TRS32 emulator - OR were they already present and then reformatted using NewDOS80?
    If they were created using the TRS32 - do you mean there is an option in the emulator itself to create images, or did you use his TRS-Tools?
    If you used his TRS-Tools to create an image and then reformatted it under the emulator - what was the original image?

    thanks

  7. #7

    Default

    Quote Originally Posted by Gazza View Post
    I had a similar prob with NEWDOS and TRSDOS on the HXC. The trick was to disable the RPM test.
    This thread includes a patch for NEWDOS written by Dave Huffman. May or may not fix your problem - worth a try

    http://www.vcfed.org/forum/showthrea...548#post402548
    I'll definitely look into this - thanks!

  8. #8

    Default

    Quote Originally Posted by Biff View Post
    Were those two images created using thew TRS32 emulator - OR were they already present and then reformatted using NewDOS80?
    I've created them with TRS-Tools as a TRSDOS 2.3 DMK file. Then they were reformatted using the TRS32 with NEWDOS/80.

    Quote Originally Posted by Biff View Post
    If they were created using the TRS32 - do you mean there is an option in the emulator itself to create images, or did you use his TRS-Tools?
    I used TRS-Tools. You can also create a new DMK floppy disk image under TRS32 and format it with NEWDOS/80. I have just tried it. It first on creation had a file size of 16 bytes and after formatting it has 0.97 MB. It was the first time for me using the direct way with the TRS32 to create a DMK.

    Quote Originally Posted by Biff View Post
    If you used his TRS-Tools to create an image and then reformatted it under the emulator - what was the original image?
    A TRSDOS 2.3 DMK file created with TRS-Tools.

  9. #9

    Default

    Quote Originally Posted by Trash-Eighty View Post
    I've created them with TRS-Tools as a TRSDOS 2.3 DMK file. Then they were reformatted using the TRS32 with NEWDOS/80.


    I used TRS-Tools. You can also create a new DMK floppy disk image under TRS32 and format it with NEWDOS/80. I have just tried it. It first on creation had a file size of 16 bytes and after formatting it has 0.97 MB. It was the first time for me using the direct way with the TRS32 to create a DMK.


    A TRSDOS 2.3 DMK file created with TRS-Tools.
    This sounds like exactly what I need - I'll try it later today.
    thanks!
    Last edited by Biff; December 3rd, 2018 at 04:34 AM. Reason: typo

  10. #10

    Default

    Quote Originally Posted by Trash-Eighty View Post
    I've created them with TRS-Tools as a TRSDOS 2.3 DMK file. Then they were reformatted using the TRS32 with NEWDOS/80.


    I used TRS-Tools. You can also create a new DMK floppy disk image under TRS32 and format it with NEWDOS/80. I have just tried it. It first on creation had a file size of 16 bytes and after formatting it has 0.97 MB. It was the first time for me using the direct way with the TRS32 to create a DMK.


    A TRSDOS 2.3 DMK file created with TRS-Tools.
    This worked perfectly - I tried it this evening and easily able to create the custom floppy images I needed.
    thanks again for the suggestion.

    Jim

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