3 ms·
I don't understand how the PLA can be 21 bits wide. The diagram seems to show 8 ON bits, 8 OFF bits, and 6 timing bits, which adds up to 22 bits. Any clarificat
by gshubert17 9y ago
I don't understand how the PLA can be 21 bits wide. The diagram seems to show 8 ON bits, 8 OFF bits, and 6 timing bits, which adds up to 22 bits. Any clarification?
- deleted 9y ago[deleted]
- monocasa 9y agoIt's a simplified explanation. http://visual6502.org/wiki/index.php?title=6507_Decode_ROM http://visual6502.org/wiki/index.php?title=6507_Decode_ROM > Note that the lower two bits are always XX - the decode ROM doesn't actually check these, but check a cooked version of these bits instead.