Questions tagged [6800]

Motorola 6800 family of processors. This does not include the similarly-numbered but different 6809 family.

1 question with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
8
votes
0answers
226 views

Behavior of lesser known illegal M6800 opcodes

The M6800 had a few illegal opcodes, including the (in)famous HCF (Halt and Catch Fire). The following illegal opcodes were revealed in BYTE Magazine, December 1977: $14: NBA $87: STAA immediate $C7: ...