Date   : Fri, 29 Jul 2005 19:56:17 +0100
From   : Mike Tomlinson <mike@...>
Subject: Re: Econet-Ethernet bridge

In article <10507291821.ZM22485@...>, Pete
Turnbull <pete@...> writes

>No, you're right in principle but slightly off on the detail.  MOS 0.1
>and earlier versions (in the earliest machines sent to selected
>schools) were originally in 2732 EPROMs.  Then MOS 0.1 became available
>as a masked ROM, and MOS 1.2 was a masked ROM when it came out.  There
>were very small numbers of development systems with versions in
>between, but by then it was possible -- and economioc -- to get a pair
>of 2764s on a carrier or to provide a 27128.

I did see a model B in for repair once which had 2 x 2764 EPROMs on a
carrier board.  *FX0 returned "OS EPROM 0.10".