AppleIIAsm-Collection/source/d4_math/T.MIN.SUB.ADDIT16.ASM

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]ADD1 EQU WPAR1
]ADD2 EQU WPAR2
ADDIT16
LDA #2
STA RETLEN
LDA ]ADD1
CLC
ADC ]ADD2
TAY
LDA ]ADD1+1
ADC ]ADD2+1
TAX
TYA
STA RETURN
STX RETURN+1
RTS