Date : Thu, 11 May 1995 12:08:42 +0200
From : ddhlo@...
Subject: Hello!
Hello all,
I'm new to the BBC emulator listserver so please allow me to introduce
myself:
My name is Lars Oesterballe, 28, I live in Denmark (Viborg) and I work
at the
Danish Land Development Service's laboratory as a computer programmer,
supporter and I also maintain (mainly the software and computer systems)
automatic systems for sol-sample analysis.
In 1993 I got my first ZX81 with 16KB RAM. After 6 months I got a Texas
Instruments TI99A with an assembler module (nice 16bit CPU actually...)
which
lasted for a year, I think. Then I set my eyes on the model "B" Beeb
and spent
every penny I had on one. I've owned Atari 130XE, Atari 1040ST and Amiga
500's
in the meantime, but every time I returnmed to the good ole Beeb, and
I didn't
let it go until late 1991 when I bought an IBM compatible PC.
During 1990-91 I programmed quite a lot of demoes squizing every drop out of
the machine - I'd like to see an emulator run those programs - - - anyone
want
to give it a try?
I am in the process of writing my own BBC B emulator using 386 assembler
(primary) and Borland Pascal 7 (initializing and DFS). I haven't got to far
yet - still working on a 6502 emulator (which one of my friends shall
use for
a VIC emulator). Plans are that the 6502 emulator will have a four byte
pipeline (32bit reg) and optimizing of common instruction pairs like
"DEX:BNE
label" or "ROR A:ROR A".
The Beeb itself will support sideways RAM/ROM, all screen modes - possibly
overscan, definately mixed mode printer port, mouse (AMX style), serial port
and joystick - but don't expect to see it all any day soon! How about
emulating the Tube over NETBIOS or any other network protocol? How about an
Econet implementation?
As for the DFS I plan on implementing it in Pascal (called from assembler
using illegal opcodes) to read "disk images" (one floppydisk equals one
file)
- thereby emulating the documented DFS entry points only. The floppydisk
controller is the one part of the Beeb I'm not quite aqainted with...
Mark mentioned the mailing list archives - but I don't know their whereabouts
- I've only found the contents list - on Mark's BBC Home Page (or nearby) I
think.
I really would like to browse through the archives to avoid posting redundant
questions.
Best regards
Lars Oesterballe