Re: Switchless ROMs

From: André Fachat <>
Date: Sat, 24 Dec 2016 12:57:35 +0100
Message-ID: <>
Am 24. Dezember 2016 1:19:09 AM schrieb smf <>:

> I've also seen this used in a battery backed real time clock that can be
> placed in a ROM socket, writing to the date/time registers was done
> using reads.

Oh the old days...  My Atari ST IEEE488 interface used the ROM port in 
exactly this way. Data was written using the lower 8 address lines of a 
read in a specific 256 byte address range...


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Received on 2016-12-24 12:00:02

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