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723d3c4249
(well, not PC@ and PC!, but I'm not even sure what would be the role of these in a PC/AT. they're only used in drivers on the z80 front, so they will not be immediately needed. todo... ) Now comes the fitting part.
12 lines
442 B
Plaintext
12 lines
442 B
Plaintext
CODE 0 AX AX XORxx, AX PUSHx, ;CODE
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CODE 1 AX 1 MOVxI, AX PUSHx, ;CODE
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CODE -1 AX -1 MOVxI, AX PUSHx, ;CODE
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CODE 1+ DI SP MOVxx, [DI] INC[w], ;CODE
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CODE 1- DI SP MOVxx, [DI] DEC[w], ;CODE
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CODE 2+ DI SP MOVxx, [DI] INC[w], [DI] INC[w], ;CODE
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CODE 2- DI SP MOVxx, [DI] DEC[w], [DI] DEC[w], ;CODE
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CODE RSHIFT ( n u -- n )
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CX POPx, AX POPx, AX SHRxCL, AX PUSHx, ;CODE
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CODE LSHIFT ( n u -- n )
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CX POPx, AX POPx, AX SHLxCL, AX PUSHx, ;CODE
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