PM Opc ADC16

ADC = Addition with Carry (16-Bits)

Hex	Mnemonic	Cycles
CF 04	ADC BA, BA	16
CF 05	ADC BA, HL	16
CF 06	ADC BA, X	16
CF 07	ADC BA, Y	16
CF 24	ADC HL, BA	16
CF 25	ADC HL, HL	16
CF 26	ADC HL, X	16
CF 27	ADC HL, Y	16
CF 60 nn nn	ADC BA, #nnnn	16
CF 61 nn nn	ADC HL, #nnnn	16

Execute

#nnnn    = Immediate unsigned 16-Bits
BA       = Register BA: (B shl 8) or A
HL       = Register HL: (H shl 8) or L
X        = Register X
Y        = Register Y
SP       = Register SP (Stack Pointer)

; ADD Ds, Sc
;
; Ds = Destination
; Sc = Source

Ds = Ds + Sc + Carry

Description

16-Bits Source and Carry adds to the 16-Bits Destination.

Conditions

Zero: Set when result is 0

Carry: Set when result is >= 65536

Overflow: Set when result overflow 16-bits signed range (< -32768 OR > 32767)

Sign: Set when 15th bit is 1

Examples

; BA = 0x0EF0
; F = (Carry = 1)
ADC BA, $1337
; BA = 0x2228 (0x0EF0 + 0x1337 + 0x0001 = 0x(0)2228)
; F = (Zero = 0):(Carry = 0):(Overflow=0):(Sign=0)

; HL = 0xBB7E
; BA = 0xCF12
; F = (Carry = 0)
ADC BA, HL
; HL = 0xBB7E
; BA = 0x8A90 (0xCF12 + 0xBB7E + 0x0000 = 0x(1)8A90)
; F = (Zero = 0):(Carry = 1):(Overflow=0):(Sign=1)

; X = 0xBEEF
; BA = 0xDEAD
; F = (Carry = 1)
ADC BA, X
; X = 0xBEEF
; BA = 0x9D9D (0xDEAD + 0xBEEF + 0x0001 = 0x(1)9D9D)
; F = (Zero = 0):(Carry = 1):(Overflow=1):(Sign=0)