29884RE: [midatlanticretro] How do I make boot floopy? IMSAI + Northstar + CP/M?
- Mar 26, 2013telmnstr@... wrote:
>Nothing in CP/M proper uses the Z80 extensions to the 8080 instruction
> When I search the internet for Northstar IMSAI CPM type stuff, I always
> just land on the Northstar Horizon information. It is Z80, where as the
> IMSAI originally was Intel 8080 so I assume the Horizon boot stuff
> isn't gonna fly.
set. If I recall correctly, the N* CP/M images that Dave has up are
all 8080 as well. I used his images to create the system I run on
my SOL which has an 8080. The boot ROM on the N* controller is all 8080
instructions. Your problem will (possibly) be that the N* images on
Dave's site will want to use the serial port that is built into the
Horizon motherboard which will (probably) not be compatible with
whatever serial port interface card you have installed in your IMSAI
> I know there is the boot.sys file or whatever where you can poke in allNot exactly. You have to patch in your own CBIOS routines to talk
> the values to get components working together.
to your console. You should not have to alter the CBIOS diskette
routines. You can put in alternate routines for PUN: and RDR: to
talk to other serial devices that you might have installed.
> OH CRAP. I just remembered, I have a cassette tape drive....Not to my knowledge. You would still have to write a program to
> Is there a mp3 archive? :-)
read bytes from the cassette interface. Better to use straight
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