8 Dec
2007
8 Dec
'07
1:44 p.m.
> One thought was to attempt to combine a 7490 _and_
a 7447 in a single
> GAL16V8. I have blown hundreds of PALs, but have much less experience
IICRC the 16V8 does not have buried registers so you
will lose the 4
of the output pins (for the counter) that you needed for the 7 segment
outputs
You can do it but you need to make a counter that counts in segment
patterns and not binary. I did see an example of this and remember
thinking how clever it was but a search of my files and online has
failed to turn up a copy.
Lee.
8 Dec
8 Dec
3:55 p.m.
"Lee Davison" wrote:
You can do it but you need to make a counter that counts in segment
patterns and not binary. I did see an example of this and remember
thinking how clever it was but a search of my files and online has
failed to turn up a copy.
isn't just a state machine with decoded output?
I would code it up in verilog and the let xst have it's way with it
and see what the resulting equations look like...
-brad
6071
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brad＠heeltoe.com -
lee＠geekdot.com