Date   : Fri, 28 Jan 2000 23:27:52 +0000 (GMT)
From   : Dave Gilbert <gilbertd@...>
Subject: Re: Possible to scratch build a BBC?

On Fri, 28 Jan 2000, ER Vaughan wrote:

> I was wondering if it is possible to build a BBC from scratch. There would
> not be a problem getting a 6502, pair of 6522s, etc, but what about the more
> obscure chips?

Well there is very little really obscure; the disc controller - the 8271
has got to be the most obscure, and the 177x which replaced it is I
believe also out of production.

Ah, but then there is the Video and serial ULAs.


> Also would it be possible to build a BBC on to an ISA or PCI card - the
> screen, keyboard etc could be emulated by software on the PC. On the card
> would be the various outputs which could be used to control hardware at
> present controlled by a real beeb.

A good trick would be to build an entire model B in an FPGA - all the
information is around if you wanted to design an FPGA to do it; I've heard
of this type of thing being set as 3rd year projects before.

Dave

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