That's certainly a horse of a different color. So the objective was to
replace a set of 4116's with a single 6116? That would reduce the available
RAM from 16KB to 2KB. Is that what you wanted? It would be dirt-simple
simply to put a 62512 on a business-card-sized daughterboard with the Z-80
and, say, a PAL or a little MSI/SSI logic, in order to fill the memory map
with SRAM and disable it wherever a memory-mapped peripheral or other memory
lived. Moreover, it would be quite reasonable to copy the content of any
EPROM/ROM device into the SRAM and be done with it, i.e disable the ROM.
Does that seem at all interesting?
Dick
----- Original Message -----
From: "Glen Goodwin" <acme_ent_at_bellsouth.net>
To: <classiccmp_at_classiccmp.org>
Sent: Saturday, March 23, 2002 8:59 PM
Subject: Re: ZX81 and 6116
> > I guess I'm having a "senior moment" but I don't remember the 4118 at
> all,
>
> Excuse the typo, this should read "4116."
>
> Glen
> 0/0
>
>
Received on Sat Mar 23 2002 - 22:44:35 GMT