Maxim Integrated DS4830 Optical Microcontroller - Manual (Page 194)

DS4830 User’s Guide
194
AND src Logical AND
Description:
Performs a logical-AND between the active accumulator (Acc) and the specified src data. For the
complete list of src specifiers, reference the MOVE instruction. Because the source field is
limited to 8 bits, the PFX[n] register is used to supply the high-byte of data for 16 bit sources.
Status Flags: S, Z
Operation:
Acc  Acc AND src
Encoding:
15 0
f001 1010 ssss ssss
Example(s):
; Acc = 2345h for each example
AND A[3] ; A[3]=0F0Fh
;  Acc = 0305h, S=0, Z=0
AND #33h ;  Acc = 0001h
AND #2233h ; generates object code below
; MOVE PFX[0], #22h (smart-prefixing)
; AND #33h
;  Acc = 2201h
MOVE PFX[0], #0Fh
AND M0[8] ; M0[8]=0Fh (assume M0[8] is an 8-bit register)
;  Acc = 0305h
Special Notes:
The active accumulator (Acc) is not allowed as the src for this operation.
AND Acc. Logical AND Carry Flag with Accumulator bit
Description:
Performs a logical-AND between the Carry (C) status flag and a specified bit of the active
accumulator (Acc.) and returns the result to the Carry.
Status Flags:
C
Operation:
C  C AND Acc.
Encoding:
15 0
1001 1010 bbbb 1010
Example(s):
; Acc = 2345h, C=1 at start
AND Acc.0 ; Acc.0=1  C=1
AND Acc.1 ; Acc.1=0  C=0
AND C, Acc.8 ; Acc.8=1  C=0