LeterZP
46 lines
400 B
NASM
46 lines
400 B
NASM
ORG 0x05C6
|
|
START: CLA
|
|
ST result
|
|
LD X
|
|
INC
|
|
PUSH
|
|
CALL 0x06E5
|
|
POP
|
|
ADD result
|
|
ST result
|
|
LD Z
|
|
PUSH
|
|
CALL 0x06E5
|
|
POP
|
|
ADD result
|
|
ST result
|
|
LD Y
|
|
DEC
|
|
PUSH
|
|
CALL 0x06E5
|
|
POP
|
|
SUB result
|
|
ST result
|
|
HLT
|
|
Z: WORD 0xFFF4
|
|
Y: WORD 0x0000
|
|
X: WORD 0xFDDE
|
|
result: WORD ?
|
|
|
|
ORG 0x06E5
|
|
LD &1
|
|
BEQ A
|
|
BPL B
|
|
A: CMP const1
|
|
BLT B
|
|
BEQ B
|
|
ASL
|
|
ASL
|
|
SUB &1
|
|
ADD const2
|
|
JUMP C
|
|
B: LD const1
|
|
C: ST &1
|
|
RET
|
|
const1: WORD 0xFAB3
|
|
const2: WORD 0x0064 |