W741E260 Datasheet, PDF (86/94 Pages) Winbond – 4-BIT FLASH MICROCONTROLLER

W741E260
Instruction Set Table 2, continued
SBC R, ACC
Subtract ACC from R with Borrow
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
SBC WR, #I
0 0001010
0 R6 R5 R4 R3 R2 R1 R0
1
ACC ← (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 loaded
into the ACC.
CF & ZF
Subtract immediate data from WR with Borrow
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
00001110
I3 I2 I1 I0 W3 W2 W1 W0
1
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.
CF & ZF
SBCR R, ACC
Subtract ACC from R with Borrow
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
0 0001011
0 R6 R5 R4 R3 R2 R1 R0
1
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.
CF & ZF
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