In message <5.0.0.25.2.20001103103333.028bd9d0@xxxxxxxxxxxxxxxx>, Chad Schell w
rites:
>I have a quick sanity check I'd like to ask the list concerning building 8K
>carts using the F8 bankswitching scheme.
Hi Chad,
Hrm...your setup might work. Be sure to do some kind of glitch filtering...
those address lines are nasty! What I mean by this is best shown by example:
Say I have a 2 bit bus (no pun intended!), which I'm watching for "01". If
the bus changes from "00" to "11", and bit 0 changes first, I'll see "01" for
an instant. Just be aware that the address transitions aren't instantaneous.
One other thing: if you're doing this for a one-off project that's good.
But if you're trying to do something large scale, you're probably better
off just ordering boards from someone else. 8K and 16K boards are readily
available...from me, for instance. (they also work with 2K and 4K images)
</SHAMELESS SELF-PROMOTION>
Good luck!
-Chris
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