23 May
1999
23 May
'99
2:56 p.m.
<RAM16 A3 board in the machine currently. Then
I'll have 56k. Perhaps
<then I'll be able to load and use CP/M 2.2. =-D
CPM needs memory starting from 0000h. and dependinghow is was sysgend or
move'd anywhere from 20k all the way up to E800h (base of the FDC).
Currently the only version of CPM I have for the NS is V1.4 for the single
density controller. When I went to CPM2.2 I used a different controller.
The upside is there is burried on the WC CPM cdrom a few BIOSs for the NS*
controller.
Hmmm...I've got a couple CPM 2.2 boot disks from Don Maslin. I've got a
query into him right now to see where they want to load etc. My machine's
memory starts at 2000h and I tried booting just for giggles and that's
obviously not going to work! =-D There's nothing on the Northstar that
naturally wants to live from 0000h to 1FFFh is there? I notice N* DOS
wants to load at 2000h so I wonder. Hmmmm...
BTW, I've got another N* chassis in the garage in highly crustated
condition that I'm considering trying to resurrect now that I've got
one working. It's just the motherboard and chassis. I've got an A1
revision Northstar CPU card and, once I repair the A3 Ram 16 card,
I'll have an A2 revision RAM card available.
I have to figure out what I do for mass storage.
Hmmmm...
Anthony Clifton