Re: 2114 chips needed?

From: Ruud Baltissen (
Date: 2001-01-10 07:49:26

Hallo Pasi,

> Not quite, because for a cartridge you need to generate A13 ...

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.

The GIF-file of this SCH is less then 16KB. I thought about attaching it to
this mail but I am not sure if this is appreciated by the people not
interested at all in this subject. For this moment just send me a private
mail and I'll email it to you. I hope to be able to place on my site soon.
Unfortunally the bookkeeping of my wifes bussiness has priority for the

Groetjes, Ruud

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