SAB80C517-M16 SIEMENS [Siemens Semiconductor Group], SAB80C517-M16 Datasheet - Page 211

• Manufacturer Part Number: SAB80C517-M16
• Description: 8-Bit CMOS Single-Chip Microcontroller
• Manufacturer: SIEMENS [Siemens Semiconductor Group]

JZ
Function:
Description:
Example:
Operation:
Encoding:
Bytes:
Cycles:
Semiconductor Group
rel
Jump if accumulator is zero
If all bits of the accumulator are zero, branch to the address indicated; otherwise
proceed with the next instruction. The branch destination is computed by adding the
signed relative-displacement in the second instruction byte to the PC, after
incrementing the PC twice. The accumulator is not modified. No flags are affected.
The accumulator originally contains 01 H . The instruction sequence
JZ
DEC
JZ
will change the accumulator to 00 H and cause program execution to continue at the
instruction identified by the label LABEL2.
JZ
(PC)
if (A) = 0
then (PC)
2
2
0 1 1 0
(PC) + 2
LABEL1
A
LABEL2
0 0 0 0
(PC) + rel
212
rel. address
Instruction Set