W741E20X Datasheet, PDF (41/84 Pages) Winbond – 4-BIT FLASH MICROCONTROLLER

Preliminary W741E20X
Instruction Set Table 2, continued
ADDR R, ACC
Add R to ACC
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
ADDR WR, #I
00011001
0 R6 R5 R4 R3 R2 R1 R0
1
ACC, R ← (R) + (ACC)
The contents of the data memory location addressed by R6 to R0 and ACC
are binary added and the result is placed in the ACC and the data memory.
CF & ZF
Add immediate data to WR
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
ADU R, ACC
Machine Code:
Machine Cycle:
Operation:
Description:
Flag Affected:
00011101
I3 I2 I1 I0 W3 W2 W1 W0
1
ACC, WR ← (WR) + I
The contents of the Working Register (WR) and the immediate data I are
binary added and the result is placed in the ACC and the WR.
CF & ZF
Add R to ACC and Carry Flag unchange
00101000
0 R6 R5 R4 R3 R2 R1 R0
1
ACC ← (R) + (ACC)
The contents of the data memory location addressed by R6 to R0 and ACC
are binary added and the result is loaded into the ACC.
ZF
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Publication Release Date: March 1998
Revision A1