Date   : Thu, 09 Feb 2006 16:17:02 +0000
From   : Phil Blundell <philb@...>
Subject: Re: 6502 copro releases

On Thu, 2006-02-09 at 16:06 +0000, Jules Richardson wrote:
> Can anyone tell me if there were any major differences between the issue 4 and 
> issue F 6502 coprocessors?  Looks like the issue 4 just has on-board power 
> regulation and a fuse (and is also a slightly later build date than the
issue F).
> 
> No idea why Acorn flipped between letters and numbers for releases of the same 
> part! (32016 copros do the same thing)

I think the deal was that they used letters for pre-release development
versions, and then switched to numbers for real production.  So "Issue
1" would be the first iteration of the board that was intended for
public consumption.

p.