16 Feb
2014
16 Feb
'14
11:29 a.m.
On 02/15/2014 12:41 PM, Chuck Guzis wrote:
On 02/15/2014 07:21 AM, Alexis Kotlowy wrote:
The BIOS is the critical element and best done with V2.2 first then the
V3stuff added...
Allison
Hello list,
I'm attempting to bring up CP/M Plus on one of my Z80 computers by
running CPMLDR.COM from CP/M 2.2. It crashes immediately after
CPMLDR.COM jumps to CPM3.SYS (I'm sure this isn't surprising). I'm
looking at the memory dumps and comparing them to the original file. It
appears for every 128 byte block, the order is backwards. I.e. if I look
at five 128 byte blocks on my PC they appear in the Z80's memory to be
as 5, 4, 3, 2 and 1. Not the 'correct' way.
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