Date   : Thu, 24 Jul 2008 16:06:43 +0200
From   : kortink@... (John Kortink)
Subject: EEPROM writing in SW rom bank?

On Thu, 24 Jul 2008 14:48:52 +0100, Charlie.Robson@... wrote:

>Greetings,
>
>I'm trying to write an EEPROM by connecting a flying lead from the /WE
>line as one would for a RAM chip. Needless to say it's not working for
>me else I wouldn't be asking for help here :)
>
>Has anyone attempted to do anything like this with any degree of
>success or am I barking up the wrong tree? Or just barking?
>
>I'm sure the parameters of the chip - an atmel 28c64 - are compatible
>with what I'm trying to achieve, but it resolutely refuses to program.
>
>I'm using a standard BBC B.
>
>All help greatly appreciated

Must still be timing. Quick thought :

Try pin 8 of IC77, which is a more 'correct' (i.e. actual)
write strobe.



John Kortink

-- 

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