RE: 8088 and 610 saga continues...

From: Hoffmann-Vetter, Martin <martinhv_at_arcor.de>
Date: Tue, 25 Jan 2011 23:29:52 +0100
Message-ID: <000e01cbbcdf$62f1be10$1b09a8c0@mhvnb10> 
Hello,

> $A1 end $21 have
> 7 bits in common; exactly the number of address lines of a 4116
> DRAM.

It's 4164 DRAM! That must be used with 8 bit refresh (256 refresh cycle) and the CBM-II has a 8 bit refresh counter (74LS393).

Greetings

Martin


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Received on 2011-01-25 23:00:16

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