--- np2/romimage/DIPSW.X86	2004/02/07 08:01:28	1.3
+++ np2/romimage/DIPSW.X86	2004/02/07 21:23:22	1.4
@@ -8,30 +8,19 @@
 
 
 
-xchgbits:		push	cx					; alのbitを逆転...
+_xchgbits:		push	cx					; alのbitを逆転...
 				mov		cx, 8
-				mov		ah, al
-xchgbitslp:		rcr		ah, 1
-				rcl		al, 1
+xchgbitslp:		rcr		al, 1
+				rcl		ah, 1
 				loop	xchgbitslp
 				pop		cx
 				ret
 
-check_p:		push	bx					; パリティの計算
-				mov		bx, 80h
-check_plp:		test	al, bl
-				je		short check_p1
-				inc		bh
-check_p1:		shr		bl, 1
-				jne		short check_plp
-				test	bh, 1
-				pop		bx
-				ret
 
 ; ---------------------------------------------------------------------------
 
 INIT_DIPSW:		mov		byte ptr ds:[DIPSW_1], 01111100b
-				mov		byte ptr ds:[DIPSW_2], 11000110b
+				mov		byte ptr ds:[DIPSW_2], 11001110b
 				mov		byte ptr ds:[DIPSW_3], 11011110b
 				ret
 
@@ -44,60 +33,64 @@ GET_DIPSW:		mov		dx, 841eh
 				in		al, dx
 				and		al, 11111100b
 				or		al, 00000010b
-				call	xchgbits
-				mov		ds:[DIPSW_1], al
-				inc		dh
+				call	_xchgbits
+				in		al, 33h
+				test	al, 08h
+				jne		short getsw1ed
+				or		ah, 80h
+getsw1ed:		mov		ds:[DIPSW_1], ah
+
+				mov		dh, 85h
 				in		al, dx
 				and		al, 11101111b
-				call	xchgbits
-				mov		ds:[DIPSW_2], al
-				inc		dh
-				in		al, dx
-				and		al, 01111111b
-				call	xchgbits
-				mov		ds:[DIPSW_3], al
-				inc		dh
+				call	_xchgbits
+				mov		dh, 87h
 				in		al, dx
 				test	al, 20h
-				je		short sw25ed
-				or		byte ptr ds:[DIPSW_2], 08h
-sw25ed:			mov		dh, 08eh
+				je		short getsw2ed
+				or		ah, 08h
+getsw2ed:		mov		ds:[DIPSW_2], ah
+
+				mov		dh, 86h
+				in		al, dx
+				and		al, 01111111b
+				call	_xchgbits
+				mov		dh, 08eh
 				in		al, dx
 				test	al, 10h
-				je		sw38ed
-				or		byte ptr ds:[DIPSW_3], 01h
-sw38ed:			ret
+				je		short getsw3ed
+				or		ah, 01h
+getsw3ed:		mov		ds:[DIPSW_3], ah
+				ret
 
 
 
 SET_DIPSW:		mov		dx, 841eh
 				mov		al, ds:[DIPSW_1]
-				call	xchgbits
-				and		al, 11111100b
-				mov		ah, al
+				call	_xchgbits
+				and		ah, 11111100b
 				in		al, dx
 				and		al, 00000010b				; soundbios
 				or		al, ah
-				call	check_p
-				jne		short putdipsw1
+				jpo		short putdipsw1
 				or		al, 00000001b
 putdipsw1:		out		dx, al
 
 				inc		dh
 				mov		al, ds:[DIPSW_2]
-				call	xchgbits
+				call	_xchgbits
+				mov		al, ah
 				and		al, 11101111b
-				call	check_p
-				jne		short putdipsw2
+				jpo		short putdipsw2
 				or		al, 00010000b
 putdipsw2:		out		dx, al
 
 				inc		dh
 				mov		al, ds:[DIPSW_3]
-				call	xchgbits
+				call	_xchgbits
+				mov		al, ah
 				and		al, 01111111b
-				call	check_p
-				jne		short putdipsw3
+				jpo		short putdipsw3
 				or		al, 10000000b
 putdipsw3:		out		dx, al
 
@@ -107,8 +100,8 @@ putdipsw3:		out		dx, al
 				test	byte ptr ds:[DIPSW_2], 08h
 				je		short sw25on
 				or		al, 00100000b
-sw25on:			call	check_p
-				jne		putdipsw25
+sw25on:			test	al, al
+				jpo		putdipsw25
 				or		al, 10000000b
 putdipsw25:		out		dx, al
 
@@ -118,8 +111,9 @@ putdipsw25:		out		dx, al
 				test	byte ptr ds:[DIPSW_3], 1
 				je		short sw38on
 				or		al, 00010000b
-sw38on:			call	check_p
-				jne		putdipsw38
+sw38on:			test	al, al
+				jpo		putdipsw38
 				or		al, 10000000b
 putdipsw38:		out		dx, al
 				ret
+