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back2root:ibm-pc-ms-dos:instr:sal-shl
SAL-SHL
SAL/SHL - Shift Arithmetic Left / Shift Logical Left
Shifts the destination left by “count” bits with zeroes shifted in on right.
The Carry Flag contains the last bit shifted out.
Usage:
SAL dest,count SHL dest,count
Modifies flags:
CF OF PF SF ZF (AF undefined)
| Clocks | Size | |||||
|---|---|---|---|---|---|---|
| Operands | 808x | 286 | 386 | 486 | Bytes | |
| reg,1 | 2 | 2 | 9 | 3 | 2 | |
| mem,1 | 15+EA | 7 | 10 | 4 | 2-4 | (W88=23+EA) |
| reg,cl | 8+4n | 5+n | 9 | 8-30 | 2 | |
| mem,cl | 20+EA+4n | 8+n | 10 | 9-31 | 2-4 | (W88=28+EA+4n) |
| reg,immed8 | - | 5+n | 9 | 8-30 | 3 | |
| mem,immed8 | - | 8+n | 10 | 9-31 | 3-5 | |
back2root/ibm-pc-ms-dos/instr/sal-shl.txt · Dernière modification : 2023/03/04 11:34 de frater
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