[BBC-Micro] Z80 coprocessor cursor keys

[Greg Cook]

On 17 Apr 2007 20:49:59 +0100, Jonathan Graham Harston
<jgh at arcade.demon.co.uk> wrote:

> Challenger introduced 640K double density disks.

Erm, 720K.  :-)  640K was ADFS.

<http://members.aon.at/~musher/bbc/hardware.htm>
<http://www.astro.livjm.ac.uk/~bbcdocs/hardware/OpusDDOS.zip>

Greg


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