Date : Mon, 22 Aug 1994 20:47:00 BST-1
From : agregson@... (Andrew Gregson)
Subject: Re: New Person on List
In-Reply-To: <Pine.3.87.9408211830.A1298-0100000@...>
The 6502 emulator was written in Turbo Pascal on the PC and was written
in such a way to support further hardware emulation. We wrote it such
that each machine cycle was correctly emulated at the correct (1Mhz)
speed. This left time spare and we intended to use this spare time
between cycles for other hardware emulation to be carried out and thus
emulate the system at the lowest possible level - this is how the 6845
was almost completely emulated. However due to lack of speed of machines
at the time (20Mhz 286) the amount of work to emualte all BBC hardware
meant pascal was unsuitable so we shelved it and considered maybe
someday porting it to 80386+ assembler. Maybe this would be a good time
to start?
Andy
agregson@...
COM0007@...
Andrew Gregson Tel: (0762) 325870
29 Tandragee Road, (0762) 347692
Lurgan, Fax: (0762) 326656
Co. Armagh, Mobile: (0850) 537498
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