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Copyright 1991 David Jurgens |
SBB - Subtract with Borrow
Usage: SBB dest,src
Modifies flags: AF CF OF PF SF ZF
Subtracts the source from the destination, and subtracts 1 extra if
the Carry Flag is set. Results are returned in "dest".
Clocks Size
Operands 808x 286 386 486 Bytes
reg,reg 3 2 2 1 2
mem,reg 16+EA 7 6 3 2-4 (W88=24+EA)
reg,mem 9+EA 7 7 2 2-4 (W88=13+EA)
reg,immed 4 3 2 1 3-4
mem,immed 17+EA 7 7 3 3-6 (W88=25+EA)
accum,immed 4 3 2 1 2-3
- see Instruction Timing
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| Esc or Alt-X to exit |
sbb |
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