TIMER XXH
Machine code
Description
Operation
XOR A,XH
Machine code
Description
Operation
XOR A,[R1R0]
Machine code
Description
Operation
XOR [R1R0],A
Machine code
Description
Operation
HTG12G0
Set immediate data to timer counter
01000111 dddddddd
The 8-bit data specified by the code is loaded to the timer counter.
TIMER ← XXH
Logical XOR immediate data to accumulator
01000011 0000dddd
Data in the accumulator is Exclusive-OR with the immediate data specified
by the code.
ACC ← ACC “XOR” XH
Logical XOR accumulator with data memory
00011011
Data in the accumulator is Exclusive-OR with the data memory addressed
by the register pair “R1,R0”.
ACC ← ACC “XOR” M(R1,R0)
Logical XOR data memory with accumulator
00011110
Data in the data memory addressed by the register pair “R1,R0” is logical
Exclusive-OR with the accumulator.
M(R1,R0) ← M(R1,R0) “XOR” ACC
30
14th May ’99