Maxim Integrated DS4830 Optical Microcontroller - Manual (Page 193)

DS4830 User’s Guide
193
Note 2: Only module 8 and modules 0-5 are supported by these single-cycle bit operations. Potentially affects C or E if PSF register is the destination.
Potentially affects S and/or Z if AP or APC is the destination.
Note 3: The terms Acc and A[AP] can be used interchangeably to denote the active accumulator.
Note 4: Any index represented by or found inside [ ] brackets is considered variable, but required.
Note 5: The active accumulator (Acc) is not allowed as the dst if A[AP] is specified as the src.
Note 6: The '{L/S}' prefix is optional.
Note 7: Instructions that attempt to simultaneously push/pop the stack (e.g. PUSH @SP--, PUSH @SPI--, POP @++SP, POPI @++SP) or modify SP in
a conflicting manner (e.g., MOVE SP, @SP--) are invalid.
Note 8: Special cases: If ‘MOVE APC, Acc’ sets the APC.CLR bit, AP will be cleared, overriding any auto-inc/dec/modulo operation specified for AP. If
‘MOVE AP, Acc’ causes an auto-inc/dec/modulo operation on AP, this overrides the specified data transfer (i.e., Acc will not be transferred to
AP).
ADD / ADDC src Add / Add with Carry
Description:
The ADD instruction sums the active accumulator (Acc or A[AP]) and the specified src data and
stores the result back to the active accumulator. The ADDC instruction additionally includes the
Carry (C) Status Flag in the summation. 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:
C, S, Z, OV
ADD
Operation:
Acc  Acc + src
Encoding:
15 0
f100 1010 ssss ssss
Example(s):
; Acc = 2345h for each example
ADD A[3] ; A[3]=FF0Fh
;  Acc =2254h,C=1, Z=0, S=0, OV=0
ADD #0C0h ;  Acc =2405h,C=0, Z=0, S=0, OV=0
ADD A[4] ; A[4]=C000h
;  Acc = E345h, C=0, Z=0, S=1, OV=0
ADD A[5] ; A[5]=6789h
;  Acc = 8ACEh, C=0, Z=0, S=1, OV=1
ADDC
Operation:
Acc  Acc + C + src
Encoding:
15 0
f110 1010 ssss ssss
Example(s):
; Acc = 2345h for each example
ADDC A[3] ; A[3] = DCBAh, C=1
;  Acc = 0000h, C=1, Z=1, S=0, OV=0
ADDC @DP[0]-- ; @DP[0] = 00EEh, C=1
;  Acc = 2434h, C=0, Z=0, S=0, OV=0
Special Notes:
The active accumulator (Acc) is not allowed as the src for these operations.