Search found 2 matches

by Sugarplum
11 Oct 2020, 06:14
Forum: Hardware and software hacking
Topic: 80 Column Mode and high speed serial?
Replies: 1
Views: 387

Re: 80 Column Mode and high speed serial?

That sounds like a good idea for this type of implementation. It would be nice to have a way to switch modes and to remap the color signals to where you can keep the D/A converter as it is, but output it as green/amber/white. Yeah, that could be a nice setup for a DOS-like (or CPM-like) OS and be go...
by Sugarplum
01 Oct 2020, 00:55
Forum: Hardware and software hacking
Topic: 10MHz, 12.5MHz and Beyond!
Replies: 25
Views: 9839

Re: 10MHz, 12.5MHz and Beyond!

It might not help much, but you could try making a skip-carry adder. Just replace the upper nibble adder with 2 adders with the carry-in line on one tied to Vcc and the other carry-in tied to the ground. Use the carry-out from the low nibble to drive a multiplexer that controls which high-nibble add...