25 Mar
2002
25 Mar
'02
2:59 p.m.
From: Hans Franke <Hans.Franke(a)mch20.sbs.de>
I think Pete is right here. there was a wire you had
to add if
you used a 4118 (or 6116) instead of the 2114s. I have to grab
the kit documentation to veryfy this.
After checking the schematic I find that there is a link. "Use L1 for 1K
RAM, use L2 for 2K RAM." This tells me that when a 4118 or two 2114s are
used (or a 6116???) there is no need to change the jumper -- it's only
required when using a 2KB 2016 or equivalent.
Digging thru my ZX Stuff I found an _original_
"ZX81 2-K RAM" Kit *G*
Well, it is at least original over here, since it has
been sold by ISS,
the official distributor of ZX81 stuff in Germany.
Wow -- did you ever use the kit?
The kit konsists of a 24 pin socket and a NEC D446C-2
RAM
I'd guess this is the same as the 2016, and that you need to change the
link to L2 for it to work.
Glen
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