2 Jun
2006
2 Jun
'06
6:14 p.m.
Roy J. Tellason wrote:
On Friday 02 June 2006 08:44 pm, Richard A. Cini
wrote:
You might try using Dave Dunfield's ImageDisk program. Fill the
whole image with hex E5 except for a small "hello world" type
program in the boot sector and see if it runs. Once you get that
working, then put your real boot loader, CBIOS and CP/M in the
appropriate sectors on the first couple of tracks. You should
then be able to boot to an empty disk. Do some SAVEs to create
some files in the file system and then copy the disk back to the
PC using ImageDisk. Fill in the sectors of the SAVEd files with
real data in the disk image and write another disk.
I'm having trouble locating someone (anyone)
who has
a bootable 5.25" single-density diskette suitable for
my VersaFloppy controller. So, I was wondering the
following. What if I setup an old PC with a 5.25" drive
and use 22DISK to prepare a disk and move CP/M 2.2
.COM files to it from the PeeCee. Then, I would have to
figure out how to get the cold-start loader onto the disk.
Writing the system tracks is definitely going to be the hard
part, all right. Because you need that to include a BIOS
that's specific to your hardware. I'm in the same spot with
regard to my BigBoard II, which I can boot a Xerox SSSD
floppy on but then I only get SSSD support, even though the
hardware and the drives support DSDD.
If you figure out how to do this I'd sure like to hear about it.