gc80c520a CORERIVER Semiconductor, gc80c520a Datasheet - Page 122
gc80c520a
Manufacturer Part Number
gc80c520a
Description
Midas1.0 Family Mask Rom/eprom/romless 8-bit Turbo Microcontrollers
Manufacturer
CORERIVER Semiconductor
Datasheet
1.GC80C520A.pdf
(187 pages)
- Current page: 122 of 187
- Download datasheet (2Mb)
JNC
Description:
Operation:
Encoding:
rel
Function:
Example:
Cycles:
Bytes:
Jump if Carry 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 LABEL1
CPL C
JNC LABEL2
will clear the carry and cause program execution to continue at the instruction
identified by the label LABEL2.
2
3
JNC
(PC)
IF (C) = 0
0
Preliminary
THEN (PC)
←
1
(PC) + 2
0
1
0 0 0 0
←
(PC) + rel
Page 122 of 187
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