Re: Stuff from Dennis Jarvis

From: Gerrit Heitsch <>
Date: Wed, 16 Nov 2016 17:43:46 +0100
Message-ID: <>
On 11/16/2016 05:09 PM, Michał Pleban wrote:
> Hello!
> Gerrit Heitsch wrote:
>> Doesn't look too different to me. The two HM514260 are 256K x 16 DRAMs
>> while the other expansion has eight 256Kx4 DRAMs. Results in the same
>> amount of memory, 1 MB.
> But one has one PAL chip and the other has two, the equations for the
> second one are probably unknown.

Well, yes, the x16 DRAMs probably needed some extra logic.


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Received on 2016-11-16 17:02:22

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