Date   : Tue, 16 Nov 2010 10:32:40 +0000
From   : list-a_cloud9.bbc-micro@... (Theo Markettos)
Subject: ROMs

In article <4CE12C9D.4050804@...> you wrote:
> Surely Vpp needs to be switched, else the device would start up in 
> command mode and only be readable after a "read" command? The MOS won't 
> know how to invoke that...
> 
> <http://docs-europe.origin.electrocomponents.com/webdocs/0b9b/0900766b80b9b92b.pdf>
> Top of page 8.

Argh, they all seem to have slightly different conventions.  The AMD 28F020s
I have on order default to read mode when Vpp is powered up:
http://www.datasheetcatalog.org/datasheet/AdvancedMicroDevices/mXqwurw.pdf
('Read command' p10)

Theo