cst 121
Deiby Cortez
page65
exercise4.1
#1

	mov ax, 0FFFFh; = -1; ax = FFFFh

	inc ax;		ax = 0000h
	mov ax, 0FFFFh
	inc al;		ax = FF00h
	mov ax, 0FFFFh
	inc ah;		ax = 00FFh
	mov ax, 1234h
	sub ax, 35h;	ax = 11FFh
;hint: negate and add
	mov ax, 1234h
	sub al, 35h;	ax = 12FFh
;same hint
	mov ax, 1234h
	neg ax;		ax = EDCCh
	mov ax, 1234h
	neg al;		ax = 12CCh
	mov ax, 1234h
	mov al, -1;	ax = 12FFh

	inc AX;		ax = 1300h
	mov ax, 12FFh;
	inc AL;		ax = 1200h
	mov ax, 1200h
	dec AX;		ax = 11FFh
	mov ax, 1200h;
	dec AL;		ax = 12FFh
	mov ax, 1234h
	sub ax, ax;	ax = 0000h
	mov ax, 1234h
	sub al, al;	ax = 1200h