12 Apr
2013
12 Apr
'13
6:58 a.m.
On 12/04/2013 13:47, Liam Proven wrote:
On 12 April 2013 06:36, Raymond Wiker <rwiker at
gmail.com> wrote:
> On Thu, Apr 11, 2013 at 10:28 PM, Tony Duell <ard at
p850ug1.demon.co.uk>wrote:
>
>> I suspect you'll know this, but which 1980s (8 bit) microcomptuer had
>> 4-bit wide RAM at the hardware level? (The hardware did 2 memory cycles
>> to make up an 8 bit byte ot give to the processor).
The only odd machine I
can think of was the Sinclair QL and ICL OPD
which were 68008 CPUs, so 16 bit CPUs and 8-Bit busses....
http://en.wikipedia.org/wiki/Sinclair_QL
http://en.wikipedia.org/wiki/One_Per_Desk
Acorn
Electron?
Not that I am aware of... I thought that apart from external
interfaces of various forms (including sideways RAM and so on), the
principle hardware difference of the Electron from the Beeb was that
it didn't have the Mullard teletext chip & so couldn't do Mode 7 -
which sadly was a very popular screen mode, as it took very little
RAM, something the Model B was notoriously short of.
--
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