Date   : Sat, 06 Aug 1994 15:00:27 EST
From   : Stephen Quan <quan@...>
Subject: Re: What machines are these emulators for?

Dave writes :

> Hi,
> I'm new to the mailing list - I'm wondering what
> machines people are developing the emulators
> for.  I did see a Beeb emulator on an ftp site
> a while ago for unix boxes - the author was apparently working
> on an X version.  That would be nice.
> 
> Have people already written emulations of all the peripheral chips
> (6522, 6845 etc.)?
> 
> Dave (gilbertd@...)

Well Dave, I don't know where all the others are at, but I suspect
the mixture is UNIX, UNIX/X and MS-DOS.  I believe the James-es
(both James B and James F) have working UNIX emulators at the
moment.  As far as 6845, I am not sure, but I heard that someone
had MODE 1 working and I hear a lot of people are getting output
in MODE 7.

So far, I haven't heard anyone else apart myself and Chris Rae
talk specifically about an MS-DOS version.  As it seems, both Chris Rae
and I are really at the stage of completed the 6502 itself, and still
yet to implement some 6845 display.  Me?  I just have to implement
ADC and SBC.  I already have ADC coded in C, but am finding tricky doing
it in assembly, especially since I already have the registers assign
to something else.  Also the BCD mode doesn't make matters any better!
-- 
Stephen Quan (quan@...                 ), SysAdmin, Analyst/Programmer.
Centre for Spatial Information Studies, University of Tasmania, Hobart.
GPO BOX 252C, Australia, 7001.  Local Tel: (002) 202898 Fax: (002) 240282
International Callers use +6102 instead of (002).