16 Feb
2014
16 Feb
'14
2:19 p.m.
On 16/02/2014 4:11 AM, Chuck Guzis wrote:
Back in the day of MP/M and CP/M plus, I found it
useful to get a basic
BIOS running on CP/M 2 first. Have you done this, using your own
de-blocking code?
--Chuck
I have CP/M 2.2 running already, using the example de-blocking code
provided by DR. I'm trying to boot CP/M Plus from CP/M 2.2 so I'm using
the existing file system from 2.2 to read CPM3.SYS, and the existing
functions from the 2.2 BIOS in CP/M Plus.
I wrote a simple physical sector explorer to see what was being written
to the hard disk, which is an old 80MB ATA drive. Everything is written
in order, so I'm not sure what's going on.
If there is a problem it's with my LDRBIOS.ASM file. I'll keep at it.
Alexis.