PM_Opc_SBC16.md

== SBC = Subtract with Carry (16-Bits) ==

Hex	Mnemonic	Cycles
CF 0C	SBC BA, BA	16
CF 0D	SBC BA, HL	16
CF 0E	SBC BA, X	16
CF 0F	SBC BA, Y	16
CF 2C	SBC HL, BA	16
CF 2D	SBC HL, HL	16
CF 2E	SBC HL, X	16
CF 2F	SBC HL, Y	16
CF 62 nn nn	SBC BA, #nnnn	16
CF 63 nn nn	SBC 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

; SBC Ds, Sc ; ; Ds = Destination ; Sc = Source

Ds = Ds - Sc - Carry

Description

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

Conditions

Zero: Set when result is 0

Carry: Set when result is < 0

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

Sign: Set when bit 15 of the result is 1

Examples

; BA = 0x2EF0 ; F = (Carry=1) SBC`` ``BA,`` ``$1337 ; BA = 0x1BB8 (0x2EF0 - 0x1337 - 0x0001 = 0x(0)1BB8) ; F = (Zero=0):(Carry=0):(Overflow=0):(Sign=0)

; HL = 0xBB7E ; BA = 0xCF12 ; F = (Carry=0) SBC`` ``BA,`` ``HL ; HL = 0xBB7E ; BA = 0xEC6C (0xCF12 - 0xBB7E - 0x0000 = 0x(1)EC6C) ; F = (Zero=0):(Carry=1):(Overflow=0):(Sign=1)

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