code 	SEGMENT para public 'CODE'
	ASSUME cs:code
.386
LOCALS
	
PUBLIC _inittwk
_inittwk PROC FAR
	push	bp
	mov	bp,sp
	push	si
	push	di
	push	ds
;	;clear palette
;	mov	dx,3c8h
;	xor	al,al
;	out	dx,al
;	inc	dx
;	mov	cx,768
;@@1:	out	dx,al
;	loop	@@1
	;400 rows
	mov	dx,3d4h
	mov	ax,00009h
	out	dx,ax
	;tweak
	mov	dx,3d4h
	mov	ax,00014h
	out	dx,ax
	mov	ax,0e317h
	out	dx,ax
	mov	dx,3c4h
	mov	ax,0604h
	out	dx,ax
	;
	mov	dx,3c4h
	mov	ax,0f02h
	out	dx,ax
	mov	ax,0a000h
	mov	es,ax
	xor	di,di
	mov	cx,32768
	xor	ax,ax
	rep	stosw
	;
	pop	ds
	pop	di
	pop	si
	pop	bp
	ret
_inittwk ENDP

PUBLIC _lineblit
_lineblit PROC FAR
	push	bp
	mov	bp,sp
	push	si
	push	di
	push	ds
	mov	di,[bp+6]
	mov	es,[bp+8]
	mov	si,[bp+10]
	mov	ds,[bp+12]
	zpl=0
	REPT	4
	mov	dx,3c4h
	mov	ax,02h+(100h shl zpl)
	out	dx,ax
	zzz=0
	REPT	80/2
	mov	al,ds:[si+(zzz+0)*4+zpl]
	mov	ah,ds:[si+(zzz+1)*4+zpl]
	mov	es:[di+zzz],ax
	zzz=zzz+2
	ENDM
	zpl=zpl+1
	ENDM
	pop	ds
	pop	di
	pop	si
	pop	bp
	ret
_lineblit ENDP

REPOUTSB MACRO
	local l1
l1:	mov	al,ds:[si]
	inc	si
	out	dx,al
	dec	cx
	jnz	l1
	ENDM

PUBLIC _setpalarea
_setpalarea PROC FAR
	push	bp
	mov	bp,sp
	push	si
	push	di
	push	ds
	mov	si,[bp+6]
	mov	ds,[bp+8]
	mov	ax,[bp+10]
	mov	dx,3c8h
	out	dx,al
	inc	dx
	mov	cx,[bp+12]
	shl	cx,1
	add	cx,ax
	REPOUTSB
	pop	ds
	pop	di
	pop	si
	pop	bp
	ret
_setpalarea ENDP

code	ENDS
	END