W741E20X Datasheet, PDF (72/84 Pages) Winbond – 4-BIT FLASH MICROCONTROLLER

Preliminary W741E20X
Instruction Set Table 2, continued
SBC WR, #I
Subtract immediate data from WR with Borrow
Machine Code:
00001110
I3 I2 I1 I0 W3 W2 W1 W0
Machine Cycle:
1
Operation:
Description:
ACC ← (WR) - I - (CF)
The immediate data I and CF are binary subtracted from the contents of the
WR and the result is loaded into the ACC.
Flag Affected:
CF & ZF
SBCR R, ACC
Subtract ACC from R with Borrow
Machine Code:
0 0001011
0 R6 R5 R4 R3 R2 R1 R0
Machine Cycle:
1
Operation:
Description:
ACC, R ← (R) - (ACC) - (CF)
The contents of the ACC and CF are binary subtracted from the contents of
the data memory location addressed by R6 to R0 and the result is placed in
the ACC and the data memory.
Flag Affected:
CF & ZF
SBCR WR, #I
Subtract immediate data from WR with Borrow
Machine Code:
00001111
I3 I2 I1 I0 W3 W2 W1 W0
Machine Cycle:
1
Operation:
Description:
ACC, R ← (WR) - I - (CF)
The immediate data I and CF are binary subtracted from the contents of the
WR and the result is placed in the ACC and the WR.
Flag Affected:
CF & ZF
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