Subject: [stella] Chip Select Line|
From: "Kroko" <Nil.Krokodil@xxxxxxx>
Date: Thu, 9 Jan 2003 19:49:11 +0100
I have made a little testing with an original PacMan ROM chip.
I made all the lines available for measuring the signals.
If I connect all lines to the PacMan ROM, as in the original cartridge,
everything works fine.
What I did now is, that I connected the A12 line to an 7407 buffer and from the
output of that buffer back to the CS line o the ROM. It is not inverting, so it
should work. But it doesn't. Why not ?
What are the timing requirements for the A12 line ? What am I missing ?
It should work, shouldn't it ?