ABOV SEMICONDUCTOR MC81F4204 - 16-Bit Manipulation Instructions

MC81F4204
April 24, 2012 Ver.1.41 151
16 BIT manipulation
NO. MNEMONIC
OP
CODE
BYTE
NO
CYCLE
NO
OPERATION
FLAG
NVGBHIZC
1 ADDW dp 1D 2 5
16-bits add without carry
YA ← ( YA ) + ( dp + 1 ) ( dp )
NV--H-ZC
2 CMPW dp 5D 2 4
Compare YA contents with memory pair contents :
( YA ) - ( dp + 1 ) ( dp )
N-----ZC
3 DECW dp BD 2 6
Decrement memory pair
( dp + 1 ) ( dp ) ← ( dp + 1 ) ( dp ) – 1
N-----Z-
4 INCW dp 9D 2 6
Increment memory pair
( dp + 1 ) ( dp ) ← ( dp + 1 ) ( dp ) + 1
N-----Z-
5 LDYA dp 7D 2 5
Load YA
YA ← ( dp + 1 ) ( dp )
N-----Z-
6 STYA dp DD 2 5
Store YA
( dp + 1 ) ( dp ) ← YA
--------
7 SUBW dp 3D 2 5
16-bits subtract without carry
YA ← ( YA ) - ( dp + 1 ) ( dp )
NV--H-ZC