Intel 8253 - Page 573

4/17/98 6-173 Addressing Modes and Data Types
XOR Rd, #data8
Bytes: 3
Clocks: 3
Operation: (Rd) <-- (Rd) (XOR) #data8
Encoding:
byte 3: #data8
XOR Rd, #data16
Bytes: 4
Clocks: 3
Operation: (Rd) <-- (Rd) (XOR) #data16
Encoding:
byte 3: upper 8 bits of #data16
byte 4: lower 8 bits of #data16
XOR [Rd], #data8
Bytes: 3
Clocks: 4
Operation: ((WS:Rd)) <-- ((WS:Rd)) (XOR) #data8
Encoding:
byte 3: #data8
XOR [Rd], #data16
Bytes: 4
Clocks: 4
Operation: ((WS:Rd)) <-- ((WS:Rd)) (XOR) #data16
Encoding:
byte 3: upper 8 bits of #data16
byte 4: lower 8 bits of #data16
1 0 0 1 0 0 0 1 d d d d 0 1 1 1
1 0 0 1 1 0 0 1 d d d d 0 1 1 1
1 0 0 1 0 0 1 0 0 d d d 0 1 1 1
1 0 0 1 1 0 1 0 0 d d d 0 1 1 1