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A-15
INSTRUCTION SET REFERENCE
DJNZW DECREMENT AND JUMP IF NOT ZERO
WORD. Decrements the value of the word
operand by 1. If the result is 0, control passes
to the next sequential instruction. If the result
is not 0, the instruction adds to the program
counter the offset between the end of this
instruction and the target label, effecting the
jump. The offset must be in the range of –128
to +127
(COUNT)
← (COUNT) –1
if (COUNT)
≠ 0 then
PC
← PC + 8-bit disp
end_if
DJNZW wreg,cadd
(11100001) (wreg) (disp)
NOTE: The displacement (disp) is sign-
extended to 24 bits
PSW Flag Settings
ZNCVVTST
——————
DPTS DISABLE PERIPHERAL TRANSACTION
SERVER (PTS). Disables the peripheral
transaction server (PTS).
PTS Disable (PSW.2)
← 0
DPTS
(11101100)
PSW Flag Settings
ZNCVVTST
——————
Table A-6. Instruction Set (Continued)
Mnemonic Operation Instruction Format