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Derek Bui edited this page Mar 2, 2020 · 9 revisions

Data registers:

D0: length of program
D1: (2 bits) size, (6 bits) addressing mode & address
D2: address value
D3 (for size parsers): size to be sent to output buffer
D3-D7: instruction-dependent

Address registers:

A0: current parser pointer
A2: current output buffer

Questions:

Do we have to worry about BCC.L?
What do we do about compiler optimization? (SUB,SUBI,SUBQ)