SAB80C517-M16 SIEMENS [Siemens Semiconductor Group], SAB80C517-M16 Datasheet - Page 209

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

JNC
Function:
Description:
Example:
Operation:
Encoding:
Bytes:
Cycles:
Semiconductor Group
rel
Jump if carry is not set
If the carry flag is a 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 to point to the next instruction. The carry flag is not modified.
The carry flag is set. The instruction sequence
JNC
CPL
JNC
will clear the carry and cause program execution to continue at the instruction
identified by the label LABEL2.
JNC
(PC)
if (C) = 0
then (PC)
2
2
0 1 0 1
(PC) + 2
LABEL1
C
LABEL2
0 0 0 0
(PC) + rel
210
rel. address
Instruction Set