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MSM80C154S/83C154S/85C154HVS
264
19. CJNE @Rr, #data, code address
(Compare indirect address to immediate data, jump if not equal)
1011011r
70
Instruction code
#data
Relative offset
Operations
Number of bytes
Number of cycles
Flags
(PSW)
Description
: Byte 1
R7 R6 R5 R4 R3 R2 R1 R0
70
Byte 3
(PC)←(PC)+3
IF ((Rr))≠#data r=0 or 1
THEN
(PC)←(PC)+relative offset
IF ((Rr))<#data r=0 or 1
THEN
(C)←1
ELSE
(C)←0
:
C AC F0 RS1 RS0 OV F1 P
•
:
:
:
The data memory location contents addressed by the register r
contents are compared with an immediate data value. Control is
shifted to a relative jump address if the compared data is not
equal. If the compared data is equal, control is shifted to the
next address following this instruction. The carry flag is set to 1
if the immediate data value is greater than the specified address
contents, but is set to 0 if otherwise.
:
3
2
I7 I6 I5 I4 I3 I2 I1 I0
70
Byte 2