Difference between revisions of "PM Opc ADC16"
From SublabWiki
(→Examples) |
m (→Conditions) |
||
Line 74: | Line 74: | ||
Overflow: Set when result overflow 16-bits signed range (< -32768 OR > 32767) | Overflow: Set when result overflow 16-bits signed range (< -32768 OR > 32767) | ||
− | Sign: Set when 15th bit is 1 | + | Sign: Set when 15th bit of the result is 1 |
=== Examples === | === Examples === |
Revision as of 20:00, 17 April 2009
Contents
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
; ADC 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 of the result 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)