CWD
CWD - Convert Word to Doubleword
Extends sign of word in register AX throughout register DX forming a doubleword quantity in DX:AX.
Usage:
CWD ;
Modifies flags:
none
Clocks | Size | |||||
---|---|---|---|---|---|---|
Operands | 808x | 286 | 386 | 486 | Bytes | |
none | 5 | 2 | 2 | 3 | 1 |
back2root:ibm-pc-ms-dos:instr:cwd
Extends sign of word in register AX throughout register DX forming a doubleword quantity in DX:AX.
Usage:
CWD ;
Modifies flags:
none
Clocks | Size | |||||
---|---|---|---|---|---|---|
Operands | 808x | 286 | 386 | 486 | Bytes | |
none | 5 | 2 | 2 | 3 | 1 |