Re: 2114 chips needed?

From: Ojala Pasi 'Albert' (
Date: 2001-01-10 09:45:51

> A13 is on pin S AFAIK. Combining RAM1..3 and BLK1 with a single 4-input
> AND-gate (74LS21) will give you A14. Combining this A14 with BLK2 and BLK3
> will give you the needed CS/OE signal. As you can see, in theory my solution
> can be used for cartridges as well.

If you don't need BLK5, then ok. If you want 24+8k expansion instead
of 24+3k, you get an address clash between $2000 and $a000..

Different spec, different implementation.

"Narns, Humans, Centauri .. we all do what we do for the same reason:
 because it seems like a good idea at the time."
	-- G'Kar to Sakai in Babylon 5:"Mind War"
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