Re: Writing emulator...

[Mike Guidero <mike@bogus.net>]

Dosius wrote:

> Mike Guidero <mike@bogus.net> wrote in message
> news:<unmvijtbqp48e0@corp.supernews.com>...
>> But, hopefully the info is good for the guy writing the emulator.
>> 
>> Mike
> 
> I'm trying to make heads or tails of this, and I'll let you know
> what's happening.  The CPU core is there, however, and I've got the
> card in Slot 5 (is this correct?)
> 
> 44K CP/M 2.2 doesn't see the card yet, but I'm working on it.

Slot 4 is the usual place for the Z80 card, but 5 will work. (But if you 
decide to emulate a IIe and add a smartport, then you have to locate that, 
and it's usual slot is 5)

Did I read correctly that you are doing 16-bit real mode x86 code with Turbo 
C?  Any chance that will ever change?

I also might suggest some things, dunno if they are possible with what you 
are doing, but a good way to keep things clean and flexible is to implement 
slots as DLLs or shared objects.  That allows for you to simply have a 
config file that tells what cards to put in what slots.

Z80 card might not be able to work this way with a minimalist interface 
(getCx00(), putCx00(), getC0x0(), putC0x0(), devSelect(), getC800(), and 
putC800()), but other more generic ones could.

A real implementation would allow for DMA, IRQ, and other hardware things to 
be emulated.

Mike