back2root:ibm-pc-ms-dos:instr:dec

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DEC

DEC - Decrement

Unsigned binary subtraction of one from the destination.

Usage:

	dec	dest	;

Modifies flags:

AF OF PF SF ZF

	Clocks				Size
Operands	808x	286	386	486	Bytes
reg,reg	3	2	2	1	2
mem,reg	16+EA	7	7	3	2-4	(W88=24+EA)
reg,mem	9+EA	7	6	1	2-4	(W88=13+EA)

back2root/ibm-pc-ms-dos/instr/dec.1677358153.txt.gz · Dernière modification : 2023/02/25 21:49 de frater