Cpl c, L/s}djnz lc[n], src, Cpl c -10 – Maxim Integrated MAXQ Family User Manual
Page 187: L/s}djnz lc[n], src -10, Maxq family user’s guide
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MAXQ Family User’s Guide
CPL C
Complement Carry Flag
Description:
Logically complements the Carry (C) Flag.
Status Flags:
C
Operation:
C
← ~C
Encoding:
15
0
Example(s):
; C = 0
CPL C
; C
← 1
{L/S}DJNZ LC[n], src
Decrement Counter, {Long/Short} Jump Not Zero
Description:
The DJNZ LC[n], src instruction performs a conditional branch based upon the associated Loop Counter (LC[n]) reg-
ister. The DJNZ LC[n], src instruction decrements the LC[n] loop counter and branches to the address defined by
src if the decremented counter has not reached 0000h. Program branches can be relative or absolute depending
upon the src specifier and may be qualified by using the 'L' or 'S' prefixes as documented in the JUMP src op code.
Status Flags:
None
Operation:
LC[n]
← LC[n] -1
LC[n] <> 0: IP
← IP + src (relative) -or- src (absolute)
LC[n] = 0: IP
← IP + 1
Encoding:
15
0
Example(s):
MOVE LC[1], #10h
; counter = 10h
Loop:
ADD
@DP[0]++
; add data memory contents to Acc, post-inc DP[0]
DJNZ LC[1], Loop
; 16 times before falling through
1101
1010
0010
1010
f10n
1101
ssss
ssss
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