INC = Increase Register by 1
| Hex | Mnemonic | Cycles |
|---|---|---|
| 80 | INC A | 8 |
| 81 | INC B | 8 |
| 82 | INC L | 8 |
| 83 | INC H | 8 |
| 84 | INC N | 8 |
| 85 nn | INC [N+#nn] | 16 |
| 86 | INC [HL] | 12 |
| 87 | INC SP | 8 |
| 90 | INC BA | 8 |
| 91 | INC HL | 8 |
| 92 | INC X | 8 |
| 93 | INC Y | 8 |
Execute
A = (8-Bits) Register A
B = (8-Bits) Register B
L = (8-Bits) Register L
H = (8-Bits) Register H
N = (8-Bits) Register N
SP = (16-Bits) Register SP (Stack Pointer)
BA = (16-Bits) Register BA: (B shl 8) or A
HL = (16-Bits) Register HL: (H shl 8) or L
X = (16-Bits) Register X
Y = (16-Bits) Register Y
[N+#nn] = (8-Bits) Memory: (I shl 16) or (N shl 8) or #nn
[HL] = (8-Bits) Memory: (I shl 16) or HL
; INC Ds
;
; Ds = Source/Destination
Ds = Ds + 1
Description
"Destination" is incremented by 1.
Conditions
Zero: Set when result is 0
Carry, Overflow and Sign remain unchanged
Examples
; A = 0x55
INC A
; A = 0x56 (0x55 + 1 = 0x56)
; F = (Zero=0)
; [N+0x88] = 0xFF
INC [N+$88]
; [N+0x88] = 0x00 (0xFF + 1 = 0x00)
; F = (Zero=1)
; BA = 0x2997
INC BA
; BA = 0x2998 (0x2997 + 1 = 0x2998)
; F = (Zero=0)
; X = 0xFFFF
INC X
; X = 0x0000 (0xFFFF + 1 = 0x0000)
; F = (Zero=1)