549
Logic Instructions Section 3-13
Description ANDW(034) takes the logical AND of data specified in I
1
and I
2
and outputs
the result to R.
• The logical AND is taken of corresponding bits in I
1
and I
2
in succession.
• When the content of corresponding bits in both I
1
and I
2
are 1 or when
either is 0, a 0 will be output to the corresponding bit in R.
I
1
, I
2
→ R
Flags
Precautions When ANDW(034) is executed, the Error Flag will turn OFF.
If as a result of the AND, the content of R is 0000 hex, the Equals Flag will
turn ON.
If as a result of the AND, the leftmost bit of R is 1, the Negative Flag will turn
ON.
Indirect DM/EM
addresses in binary
@ D00000 to @ D32767
@ E00000 to @ E32767
@ En_00000 to @ En_32767
(n = 0 to C)
Indirect DM/EM
addresses in BCD
*D00000 to *D32767
*E00000 to *E32767
*En_00000 to *En_32767
(n = 0 to C)
Constants #0000 to #FFFF
(binary)
---
Data Registers DR0 to DR15
Index Registers ---
Indirect addressing
using Index Registers
,IR0 to ,IR15
–2048 to +2047 ,IR0 to –2048 to +2047 ,IR15
DR0 to DR15, IR0 to IR15
,IR0+(++) to ,IR15+(++)
,–(– –)IR0 to, –(– –)IR15
Area I
1
I
2
R
I
1
I
2
R
111
100
010
000
Name Label Operation
Error Flag ER OFF
Equals Flag = ON when the result is 0.
OFF in all other cases.
Negative Flag N ON when the leftmost bit of R is 1.
OFF in all other cases.
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