Date   : Fri, 09 Oct 2009 23:12:38 +0100
From   : pete@... (Pete Turnbull)
Subject: Review: Micro Men

On 09/10/2009 16:00, Anders Carlsson wrote:
> Rob wrote:
> 
>> the first machines' OS 0.10 didn't leave any ROM sockets free to put a DFS 
>> ROM in, for a start!!
> 
> Perhaps you can piggy-back ROMs on top of eachother? :-) If they did 
> wire-wrap, they probably wouldn't mind piggy-backing neither.

Nope, the original 0.10 EPROMs were a set of four 2732s which live in 
the four sockets normally used for sideways ROMs.  There's a set of 
links on the board to rearrange the chip select decoding to make those 
four sockets occupy a quarter each of the MOS space, and make the other 
socket, normally the MOS space, into the language space.  A little 
later, there was a ROM version 0.1, of course.

-- 
Pete                                           Peter Turnbull
                                               Network Manager
                                               University of York