03-07-2019, 02:35 AM
I can usually use SCP to convert DMK or DSK images into bootable floppies but the Tandy Model 4 CP/M Plus diskettes I create with SCP are not bootable. I use a two-step approach.
First I use the HxC Floppy Emulator software in Windows 10 to convert from DMK or DSK format to SCP format.
Then I use the SCP software/hardware to write the physical floppy diskette.
As I said, this works fine for most MFM-encoded formats (Kaypro, TRS-80, Color Computer, TI-99/4A. etc.) but after going through the entire writing process with no error messages, the SCP-created CP/M Plus diskettes are not bootable on a TRS-80 Model 4.
Finally I tried using HxC to create an IMD image which ImageDisk was able to use to create bootable floppies from DOS.
According to ImageDisk, Tandy CP/M Plus uses a dual-format. Track 0 is 18 sectors of 256 bytes but the other 39 tracks are 8 sectors of 512 bytes. I believe SCP software could be modified to write these disks successfully. If you’re interested in tackling the job, I can provide either DSK or DMK images of the Tandy software.
Let me know if you’d like copies of the diskette images.
Tom Lake
Malone, NY
First I use the HxC Floppy Emulator software in Windows 10 to convert from DMK or DSK format to SCP format.
Then I use the SCP software/hardware to write the physical floppy diskette.
As I said, this works fine for most MFM-encoded formats (Kaypro, TRS-80, Color Computer, TI-99/4A. etc.) but after going through the entire writing process with no error messages, the SCP-created CP/M Plus diskettes are not bootable on a TRS-80 Model 4.
Finally I tried using HxC to create an IMD image which ImageDisk was able to use to create bootable floppies from DOS.
According to ImageDisk, Tandy CP/M Plus uses a dual-format. Track 0 is 18 sectors of 256 bytes but the other 39 tracks are 8 sectors of 512 bytes. I believe SCP software could be modified to write these disks successfully. If you’re interested in tackling the job, I can provide either DSK or DMK images of the Tandy software.
Let me know if you’d like copies of the diskette images.
Tom Lake
Malone, NY