DEC r     Decrement     Rabbit 2000/3000/4000 Instruction

Opcode	Instruction	Clocks	Operation
----	DEC r	2	r = r - 1
3D	DEC A	2	A = A - 1
05	DEC B	2	B = B - 1
0D	DEC C	2	C = C - 1
15	DEC D	2	D = D - 1
1D	DEC E	2	E = E - 1
25	DEC H	2	H = H - 1
2D	DEC L	2	L = L - 1

Flags				ALTD			IOI/IOE
S	Z	L/V	C	F	R	SP	S	D
·	·	V	-	·	·

Description

Decrements r (any of the registers A, B, C, D, E, H, or L).