HXC compatible Disk Images for TRS 80 - Help!!!

HxC Floppy emulator support for all others computers...
sijnstra
Posts: 17
Joined: Sun Sep 13, 2020 6:26 am

Re: HXC compatible Disk Images for TRS 80 - Help!!!

Post by sijnstra »

In case anyone else ends up on this thread like I did, you might have downloaded some .dmk files and find that some work but not all of them when converted to .hfe. if you have *some* .dmk files that don't work properly in when converted to .hfe files, an easy to use command line conversion utility is in the catweasel tools. On a windows box you an use the freely available dmk2jv3.exe from Tim Mann's site for TRS 80 model 3/4/4P disks, and have fun with the -v2 option as you can see if the image file had any sector interleave. The outpul file by default will have .dsk extension which seems to be fine. Some clipped examples:
D:\TRS80\4pWork\cw2dmk-4.4-win32>dmk2jv3.exe -v2 "..\Vicious Vipers v1.1 (2000)(Plaid Vest Software)[M4].dmk"
[tracks=40, sides=1, fmtimes=2, rx02=0, tracklen=0x1900]
Track 0, side 0, sector: 0 6 12 1 7 13 2 8 14 3 9 15 4 10 16 5 11 17
Track 1, side 0, sector: 10 16 5 11 17 0 6 12 1 7 13 2 8 14 3 9 15 4
.....
Versus
D:\TRS80\4pWork\cw2dmk-4.4-win32>dmk2jv3.exe -v2 "..\disk11233.dmk"
[tracks=40, sides=1, fmtimes=2, rx02=0, tracklen=0x1900]
Track 0, side 0, sector: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Track 1, side 0, sector: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
.....

Jeff
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Re: HXC compatible Disk Images for TRS 80 - Help!!!

Post by Jeff »

Can you share some non working dmk files ?

sijnstra
Posts: 17
Joined: Sun Sep 13, 2020 6:26 am

Re: HXC compatible Disk Images for TRS 80 - Help!!!

Post by sijnstra »

Hi Jeff,

No problem! Here's one that worked much better after converting to .DSK first:
http://www.trs-80.com/cgi-bin/down-ok-m ... ipr114.zip

and here's a second one which I can happily boot in an emulator, the .HFE conversion doesn't work, but can't convert to .DSK because it has false track records and other copy protections:
https://www.willus.com/trs80/?-s+2+-a+-13+-p+13382

Regards,
Shawn

Jeff
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Re: HXC compatible Disk Images for TRS 80 - Help!!!

Post by Jeff »

sijnstra wrote:
Sun Jan 03, 2021 1:29 am
Hi Jeff,

No problem! Here's one that worked much better after converting to .DSK first:
http://www.trs-80.com/cgi-bin/down-ok-m ... ipr114.zip

and here's a second one which I can happily boot in an emulator, the .HFE conversion doesn't work, but can't convert to .DSK because it has false track records and other copy protections:
https://www.willus.com/trs80/?-s+2+-a+-13+-p+13382

Regards,
Shawn
In the first image some gap between the sector header and the sector data are too long. A real controller can't read this .(The image is malformed)

For the second image i suspect that the copy protection is expecting some weakbits. But the dmk format can't describe this properly.

sijnstra
Posts: 17
Joined: Sun Sep 13, 2020 6:26 am

Re: HXC compatible Disk Images for TRS 80 - Help!!!

Post by sijnstra »

Thanks Jeff! Much appreciated. So if I interpret that correctly, the underlying issue is that the DMK format is great for capturing enough data to use in an emulator, however, it can be used in ways that make it less useful for archival quality, and running the DMK file through the conversion process above or any other repair process I can find is probably the best way to make a viable emulated disk out of it again.

780Tech
Posts: 2
Joined: Wed Mar 17, 2021 4:44 pm

Re: HXC compatible Disk Images for TRS 80 - Help!!!

Post by 780Tech »

I ran into exactly the same problem with my Model 4P but was helped out by Patrick B on the Models_3-4-4d-4p Discord channel.

Try these ;)

http://www.780tech.com/workinghxc.zip
Last edited by 780Tech on Wed Mar 17, 2021 6:27 pm, edited 1 time in total.

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