IBM XT 5160

Processor Control
CLC = Clear Carry STC = Set Carry
1...._"_'_,_,0_0_0 ...... 1 I 11111001
CMC = Complement Carry NOP = No Operation
I 11110101 1 1 .... _'°_°_'°_°_°° _
CLD = Clear Direction STD = Set Direction
__ ,,_,_,_,,_0_0 ....... 11 11111101
CLI = Clear Interrupt STI = Set Interrupt
1 .... _"_'_,_,0_,_0 1 I 11111011
HLT = Halt
WAIT
= Wait
_____"_'_'0_'_0_0 ....... 1 I 10011011
LOCK = Bus lock prefix ESC = Escape (to 8087)
1 ..... _"_'_,0_0_0_0 1 I 11011xxx I mod xxx r/ml
Instruction Set 6-23 -