DP805x Instructions set details
- 43 -
3.19. JNC
Instruction:
Function:
JNC rel
Jump if carry is not set
Description: 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.
Operation:
(PC) ← (PC) + 2
if (C) = 0 then
(PC) ← (PC) + rel
Bytes:
Cycles:
2
3
Encoding:
0
1
0
1
0
0
0
0
relative address
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