Dimension 68000

[fritzeflink]

I do not have the hard disk controller, so I could not try to mount it directly on my Dimension 68000, but I was able to retrieve all the files from the disk image.

that's interesting. How did you do that ?

Please explain it for me as that's something I only know less about.

 

[ushicow]

that's interesting. How did you do that ?

Please explain it for me as that's something I only know less about.

Use cpmtools to retrieve CP/M files.
$ mkdir cpm
$ cpmcp -f dim68-hd tulin-extracted-1 0:\* cpm

The contents of the diskdef file are as follows.
----
diskdef dim68-hd
seclen 512
tracks 1331
sectrk 17
blocksize 4096
maxdir 1024
skew 0
boottrk 1
os 2.2
end
----

Extracting MS-DOS volumes is simpler.
$ dd if=tulin-extracted-1 of=tulin-dos.img bs=256 skip=45288

The tulin-dos.img is a FAT12 image; on macOS, it could be mounted, but not on Windows 10/11.

 

[ushicow]

Use cpmtools to retrieve CP/M files.
$ mkdir cpm
$ cpmcp -f dim68-hd tulin-extracted-1 0:\* cpm

The contents of the diskdef file are as follows.
----
diskdef dim68-hd
seclen 512
tracks 1331
sectrk 17
blocksize 4096
maxdir 1024
skew 0
boottrk 1
os 2.2
end
----

Extracting MS-DOS volumes is simpler.
$ dd if=tulin-extracted-1 of=tulin-dos.img bs=256 skip=45288

The tulin-dos.img is a FAT12 image; on macOS, it could be mounted, but not on Windows 10/11.

The CP/M volume contained 238 files. The screen editor VED.68K and the graphics library XG.O are valuable because they are not included in the bitsavers.org floppy disk images. I have not yet found a way to write these files back to floppy disk, so I will try this over the weekend.

 

[ushicow]

The CP/M volume contained 238 files. The screen editor VED.68K and the graphics library XG.O are valuable because they are not included in the bitsavers.org floppy disk images. I have not yet found a way to write these files back to floppy disk, so I will try this over the weekend.

VED.68K was written back to floppy disk and the screen editor was able to run on the actual machine.

 

[fritzeflink]

Thanks for the explanation and your test.

 

[ushicow]

ROM monitor command.
>smXXXXXX set memory
>gtXXXXXX goto memory location
>bt boot drive A:
XXXXXX is a hexadecimal number. The end of the line is a space, not a return.

https://www.facebook.com/groups/dimension68000

 

[ushicow]

I'm making the DVI display card for Dimension 68000 using Tang Nano 9K FPGA board.
Now, it display text mode.
View attachment IOHD0014.MP4

 

[ushicow]

Added 8MB RAM capability to the display card for Dimension 68000 with Tang Nano 9K.

 

[ushicow]

Does anyone have a BIOS ROM newer than Rev. E?
The New Dimension that DimensionDude has is Rev. F.11.

 

[Al Kossow]

Does anyone have a BIOS ROM newer than Rev. E?
The New Dimension that DimensionDude has is Rev. F.11.

at this point he should only be considered a hoarder.

 

[shirsch]

at this point he should only be considered a hoarder.

I've dealt with a few human black holes over the years. Can be very frustrating and it leads to important software and hardware being lost forever.

 

[ushicow]

Added Hard Disk emulation function to the TangNano 9K Card.