WebSVN – Kolibri OS – Blame – /kernel/trunk/video/vesa12.inc

Rev	Author	Line No.	Line
425	victor	1	$Revision: 527 $
431	serge	2	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		3	;; ;;
		4	;; Copyright (C) KolibriOS team 2004-2007. All rights reserved. ;;
		5	;; Distributed under terms of the GNU General Public License ;;
		6	;; ;;
		7	;; VESA12.INC ;;
		8	;; ;;
		9	;; Vesa 1.2 functions for MenuetOS ;;
		10	;; ;;
		11	;; Copyright 2002 Ville Turjanmaa ;;
		12	;; ;;
		13	;; quickcode@mail.ru - bankswitch for S3 cards ;;
		14	;; ;;
		15	;; See file COPYING for details ;;
		16	;; ;;
		17	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
1	ha	18
		19
		20	; A complete video driver should include the following types of function
		21	;
		22	; Putpixel
		23	; Getpixel
		24	;
		25	; Drawimage
		26	; Drawbar
		27	;
		28	; Drawbackground
		29	;
		30	;
		31	; Modifying the set_bank -function is mostly enough
		32	; for different Vesa 1.2 setups.
		33
5	halyavin	34	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		35	; set_bank for Trident videocards, work on Trident 9440
		36	; modified by Mario79
		37	;set_bank:
		38	;cli
381	serge	39	;cmp al,[BANK_RW]
5	halyavin	40	;je retsb
381	serge	41	;mov [BANK_RW],al
5	halyavin	42	;push dx
		43	;mov dx,3D8h
		44	;out dx,al
		45	;pop dx
		46	;retsb:
		47	;sti
		48	;ret
1	ha	49
5	halyavin	50
		51	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		52	; set_bank for S3 videocards, work on S3 ViRGE PCI (325)
379	serge	53	; modified by kmeaw
		54	set_bank:
102	poddubny	55	pushfd
379	serge	56	cli
381	serge	57	cmp al,[BANK_RW]
379	serge	58	je retsb
381	serge	59	mov [BANK_RW],al
379	serge	60	push ax
		61	push dx
		62	push cx
		63	mov cl, al
		64	mov dx, 0x3D4
		65	mov al, 0x38
1	ha	66	out dx, al ;CR38 Register Lock 1 ;Note: Traditionally 48h is used to
		67	;unlock and 00h to lock
379	serge	68	inc dx
		69	mov al, 0x48
1	ha	70	out dx, al ;3d5 -?
379	serge	71	dec dx
		72	mov al, 0x31
1	ha	73	out dx, al ;CR31 Memory Configuration Register
		74	;0 Enable Base Address Offset (CPUA BASE). Enables bank operation if set, ;disables if clear.
		75	;4-5 Bit 16-17 of the Display Start Address. For the 801/5,928 see index 51h,
		76	;for the 864/964 see index 69h.
		77
379	serge	78	inc dx
		79	in al, dx
		80	dec dx
		81	mov ah, al
		82	mov al, 0x31
		83	out dx, ax
		84	mov al, ah
		85	or al, 9
		86	inc dx
		87	out dx, al
		88	dec dx
		89	mov al, 0x35
1	ha	90	out dx, al ;CR35 CRT Register Lock
379	serge	91	inc dx
		92	in al, dx
		93	dec dx
		94	and al, 0xF0
		95	mov ch, cl
		96	and ch, 0x0F
		97	or ch, al
		98	mov al, 0x35
		99	out dx, al
		100	inc dx
		101	mov al, ch
		102	out dx, ax
		103	dec dx
1	ha	104	mov al, 0x51 ;Extended System Control 2 Register
379	serge	105	out dx, al
		106	inc dx
		107	in al, dx
		108	dec dx
		109	and al, 0xF3
		110	shr cl, 2
		111	and cl, 0x0C
		112	or cl, al
		113	mov al, 0x51
		114	out dx, al
		115	inc dx
		116	mov al, cl
		117	out dx, al
		118	dec dx
		119	mov al, 0x38
		120	out dx, al
		121	inc dx
		122	xor al, al
		123	out dx, al
		124	dec dx
		125	pop cx
		126	pop dx
		127	pop ax
		128	retsb:
102	poddubny	129	popfd
1	ha	130	ret
		131
		132	;Set bank function for Intel 810/815 chipsets
		133	; ***Modified by Protopopius, Russia.***
		134	; ******* http://menuetos.hut.ru ************
		135	; ************************************************
		136	;
		137	;set_bank:
		138	;cli
381	serge	139	;cmp al,[BANK_RW]
1	ha	140	;je retsb
381	serge	141	;mov [BANK_RW],al
1	ha	142	;push ax
		143	;push dx
		144	;mov dx,3CEh
		145	;mov ah,al ; Save value for later use
		146	;mov al,10h ; Index GR10 (Address Mapping)
		147	;out dx,al ; Select GR10
		148	;inc dl
		149	;mov al,3 ; Set bits 0 and 1 (Enable linear page mapping)
		150	;out dx,al ; Write value
		151	;dec dl
		152	;mov al,11h ; Index GR11 (Page Selector)
		153	;out dx,al ; Select GR11
		154	;inc dl
		155	;mov al,ah ; Write address
		156	;out dx,al ; Write the value
		157	;pop dx
		158	;pop ax
		159	;retsb:
		160	;sti
		161	;ret
		162
		163	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}
		164
		165	;set_bank:
		166	; cli
381	serge	167	; cmp al,[BANK_RW]
1	ha	168	; je retsb
381	serge	169	; mov [BANK_RW],al
1	ha	170	; push ax
		171	; push dx
		172	; mov ah,al
		173	; mov dx,0x03D4
		174	; mov al,0x39
		175	; out dx,al
		176	; inc dl
		177	; mov al,0xA5
		178	; out dx,al
		179	; dec dl
		180	; mov al,6Ah
		181	; out dx,al
		182	; inc dl
		183	; mov al,ah
		184	; out dx,al
		185	; dec dl
		186	; mov al,0x39
		187	; out dx,al
		188	; inc dl
		189	; mov al,0x5A
		190	; out dx,al
		191	; dec dl
		192	; pop dx
		193	; pop ax
		194	;
		195	; retsb:
		196	; ret
		197
		198
		199	vesa12_drawbackground:
		200
		201	call [disable_mouse]
		202
		203	push eax
		204	push ebx
		205	push ecx
		206	push edx
		207
		208	xor edx,edx
527	diamond	209	mov eax,dword[BgrDataWidth]
		210	mov ebx,dword[BgrDataHeight]
1	ha	211	mul ebx
		212	mov ebx,3
		213	mul ebx
		214	mov [imax],eax
115	poddubny	215	mov eax,[draw_data+32+RECT.left]
		216	mov ebx,[draw_data+32+RECT.top]
1	ha	217	mov edi,0 ;no force
		218
		219	v12dp3:
		220
		221	push eax
		222	push ebx
		223
527	diamond	224	cmp [BgrDrawMode],dword 1 ; tiled background
1	ha	225	jne no_vesa12_tiled_bgr
		226
		227	push edx
		228
		229	xor edx,edx
527	diamond	230	div dword [BgrDataWidth]
1	ha	231
527	diamond	232	push edx
1	ha	233	mov eax,ebx
		234	xor edx,edx
527	diamond	235	div dword [BgrDataHeight]
1	ha	236	mov ebx,edx
		237	pop eax
		238
		239	pop edx
		240
		241	no_vesa12_tiled_bgr:
		242
527	diamond	243	cmp [BgrDrawMode],dword 2 ; stretched background
1	ha	244	jne no_vesa12_stretched_bgr
		245
		246	push edx
		247
527	diamond	248	mul dword [BgrDataWidth]
381	serge	249	mov ecx,[ScreenWidth]
1	ha	250	inc ecx
		251	div ecx
		252
		253	push eax
		254	mov eax,ebx
527	diamond	255	mul dword [BgrDataHeight]
381	serge	256	mov ecx,[ScreenHeight]
1	ha	257	inc ecx
		258	div ecx
		259	mov ebx,eax
		260	pop eax
		261
		262	pop edx
		263
		264	no_vesa12_stretched_bgr:
		265
		266
527	diamond	267	mov esi,ebx
		268	imul esi, dword [BgrDataWidth]
1	ha	269	add esi,eax
527	diamond	270	lea esi,[esi*3]
469	serge	271	add esi,[img_background] ;IMG_BACKGROUND
1	ha	272	pop ebx
		273	pop eax
		274
		275	v12di4:
		276
527	diamond	277	mov cl,[esi+2]
		278	shl ecx,16
		279	mov cx,[esi]
1	ha	280	pusha
		281	mov esi,eax
		282	mov edi,ebx
381	serge	283	mov eax,[ScreenWidth]
1	ha	284	add eax,1
		285	mul ebx
527	diamond	286	cmp [eax+esi+WinMapAddress],byte 1
1	ha	287	jnz v12nbgp
381	serge	288	mov eax,[BytesPerScanLine]
1	ha	289	mov ebx,edi
		290	mul ebx
		291	add eax,esi
		292	add eax,esi
		293	add eax,esi
381	serge	294	cmp [ScreenBPP],byte 24
1	ha	295	jz v12bgl3
		296	add eax,esi
		297
		298	v12bgl3:
		299
		300	push ebx
		301	push eax
		302
381	serge	303	sub eax,[LFBAddress]
1	ha	304
		305	shr eax,16
		306	call set_bank
		307	pop eax
		308	and eax,65535
381	serge	309	add eax,VGABasePtr
1	ha	310	pop ebx
		311
		312	mov [eax],cx
		313	add eax,2
		314	shr ecx,16
		315	mov [eax],cl
		316	sti
		317
		318	v12nbgp:
		319
		320	popa
		321	add esi,3
		322	inc eax
115	poddubny	323	cmp eax,[draw_data+32+RECT.right]
1	ha	324	jg v12nodp31
		325	jmp v12dp3
		326
		327	v12nodp31:
		328
115	poddubny	329	mov eax,[draw_data+32+RECT.left]
1	ha	330	inc ebx
115	poddubny	331	cmp ebx,[draw_data+32+RECT.bottom]
1	ha	332	jg v12dp4
		333	jmp v12dp3
		334
		335	v12dp4:
		336
		337	pop edx
		338	pop ecx
		339	pop ebx
		340	pop eax
		341	ret
		342
		343
		344	vesa12_drawbar:
		345
		346	call [disable_mouse]
		347
		348	;; mov [novesachecksum],dword 0
		349	sub edx,ebx
		350	sub ecx,eax
		351	push esi
		352	push edi
		353	push eax
		354	push ebx
		355	push ecx
		356	push edx
379	serge	357	mov ecx,[TASK_BASE]
115	poddubny	358	add eax,[ecx-twdw+WDATA.box.left]
		359	add ebx,[ecx-twdw+WDATA.box.top]
1	ha	360	push eax
		361	mov eax,ebx ; y
381	serge	362	mov ebx,[BytesPerScanLine]
1	ha	363	mul ebx
		364	pop ecx
		365	add eax,ecx ; x
		366	add eax,ecx
		367	add eax,ecx
381	serge	368	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x start
1	ha	369	jz dbpi2412
		370	add eax,ecx
		371
		372	dbpi2412:
		373
381	serge	374	add eax,[LFBAddress]
1	ha	375	mov edi,eax
		376
		377	; x size
		378
		379	mov eax,[esp+4] ; [esp+6]
		380	mov ecx,eax
		381	add ecx,eax
		382	add ecx,eax
381	serge	383	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x size
1	ha	384	jz dbpi24312
		385	add ecx,eax
		386
		387	dbpi24312:
		388
		389	mov ebx,[esp+0]
		390
		391	; check limits ?
		392
		393	push eax
		394	push ecx
379	serge	395	mov eax,[TASK_BASE]
		396	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.left]
1	ha	397	cmp ecx,0
		398	jnz dbcblimitlset12
379	serge	399	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.top]
1	ha	400	cmp ecx,0
		401	jnz dbcblimitlset12
379	serge	402	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.right]
381	serge	403	cmp ecx,[ScreenWidth]
1	ha	404	jnz dbcblimitlset12
379	serge	405	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.bottom]
381	serge	406	cmp ecx,[ScreenHeight]
1	ha	407	jnz dbcblimitlset12
		408	pop ecx
		409	pop eax
		410	push dword 0
		411	jmp dbcblimitlno12
		412
		413	dbcblimitlset12:
		414
		415	pop ecx
		416	pop eax
		417	push dword 1
		418
		419	dbcblimitlno12:
		420
381	serge	421	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ?
1	ha	422	jz dbpi24bit12
		423	jmp dbpi32bit12
		424
		425
		426	; DRAWBAR 24 BBP
		427
		428
		429	dbpi24bit12:
		430
		431	push eax
		432	push ebx
		433	push edx
		434	mov eax,ecx
		435	mov ebx,3
		436	div ebx
		437	mov ecx,eax
		438	pop edx
		439	pop ebx
		440	pop eax
		441	cld
		442
		443	dbnewpi12:
		444
		445	push ebx
		446	push edi
		447	push ecx
		448
		449	xor edx,edx
		450	mov eax,edi
381	serge	451	sub eax,[LFBAddress]
1	ha	452	mov ebx,3
		453	div ebx
		454	add eax,WinMapAddress
379	serge	455	mov ebx,[CURRENT_TASK]
1	ha	456	cld
		457
		458	dbnp2412:
		459
		460	mov dl,[eax]
		461	push eax
		462	push ecx
		463	cmp dl,bl
		464	jnz dbimp24no12
		465	cmp [esp+5*4],dword 0
		466	jz dbimp24yes12
		467	; call dbcplimit
		468	; jnz dbimp24no12
		469
		470	dbimp24yes12:
		471
		472	push edi
		473	mov eax,edi
381	serge	474	sub eax,[LFBAddress]
1	ha	475	shr eax,16
		476	call set_bank
		477	and edi,0xffff
381	serge	478	add edi,VGABasePtr
1	ha	479	mov eax,[esp+8+3*4+16+4+4]
		480	stosw
		481	shr eax,16
		482	stosb
		483	sti
		484	pop edi
		485	add edi,3
		486	pop ecx
		487	pop eax
		488	inc eax
		489	loop dbnp2412
		490	jmp dbnp24d12
		491
		492	dbimp24no12:
		493
		494	pop ecx
		495	pop eax
		496	cld
		497	add edi,3
		498	inc eax
		499	loop dbnp2412
		500
		501	dbnp24d12:
		502
		503	mov eax,[esp+3*4+16+4]
		504	test eax,0x80000000
		505	jz nodbgl2412
		506	cmp al,0
		507	jz nodbgl2412
		508	dec eax
		509	mov [esp+3*4+16+4],eax
		510
		511	nodbgl2412:
		512
		513	pop ecx
		514	pop edi
		515	pop ebx
381	serge	516	add edi,[BytesPerScanLine]
1	ha	517	dec ebx
		518	jz dbnonewpi12
		519	jmp dbnewpi12
		520
		521	dbnonewpi12:
		522
		523	add esp,7*4
		524
		525	ret
		526
		527
		528	; DRAWBAR 32 BBP
		529
		530
		531	dbpi32bit12:
		532
		533	cld
		534	shr ecx,2
		535
		536	dbnewpi3212:
		537
		538	push ebx
		539	push edi
		540	push ecx
		541
		542	mov eax,edi
381	serge	543	sub eax,[LFBAddress]
1	ha	544	shr eax,2
		545	add eax,WinMapAddress
379	serge	546	mov ebx,[CURRENT_TASK]
1	ha	547	cld
		548
		549	dbnp3212:
		550
		551	mov dl,[eax]
		552	push eax
		553	push ecx
		554	cmp dl,bl
		555	jnz dbimp32no12
		556	cmp [esp+5*4],dword 0
		557	jz dbimp32yes12
		558	; call dbcplimit
		559	; jnz dbimp32no12
		560
		561	dbimp32yes12:
		562
		563	push edi
		564	mov eax,edi
381	serge	565	sub eax,[LFBAddress]
1	ha	566	shr eax,16
		567	call set_bank
		568	and edi,0xffff
381	serge	569	add edi,VGABasePtr
1	ha	570	mov eax,[esp+8+3*4+16+4+4]
		571	stosw
		572	shr eax,16
		573	stosb
		574	sti
		575	pop edi
		576	add edi,4
		577	inc ebp
		578	pop ecx
		579	pop eax
		580	inc eax
		581	loop dbnp3212
		582	jmp dbnp32d12
		583
		584	dbimp32no12:
		585
		586	pop ecx
		587	pop eax
		588	inc eax
		589	add edi,4
		590	inc ebp
		591	loop dbnp3212
		592
		593	dbnp32d12:
		594
		595	mov eax,[esp+12+16+4]
		596	test eax,0x80000000
		597	jz nodbgl3212
		598	cmp al,0
		599	jz nodbgl3212
		600	dec eax
		601	mov [esp+12+16+4],eax
		602
		603	nodbgl3212:
		604
		605	pop ecx
		606	pop edi
		607	pop ebx
381	serge	608	add edi,[BytesPerScanLine]
1	ha	609	dec ebx
		610	jz nodbnewpi3212
		611	jmp dbnewpi3212
		612
		613	nodbnewpi3212:
		614
		615	add esp,7*4
		616	ret
		617
		618
		619	Vesa12_putpixel24:
		620
		621	mov edi,eax ; x
		622	mov eax,ebx ; y
		623	lea edi,[edi+edi*2]
381	serge	624	mov ebx,[BytesPerScanLine]
1	ha	625	mul ebx
		626	add edi,eax
		627	mov eax,edi
		628	shr eax,16
		629	call set_bank
		630	and edi,65535
381	serge	631	add edi,VGABasePtr
1	ha	632	mov eax,[esp+28]
		633	stosw
		634	shr eax,16
		635	mov [edi],al
		636	sti
		637	ret
		638
		639
		640
		641	Vesa12_putpixel32:
		642
		643	mov edi,eax ; x
		644	mov eax,ebx ; y
		645	shl edi,2
381	serge	646	mov ebx,[BytesPerScanLine]
1	ha	647	mul ebx
		648	add edi,eax
		649	mov eax,edi
		650	shr eax,16
		651	call set_bank
		652	and edi,65535
381	serge	653	add edi,VGABasePtr
1	ha	654	mov ecx,[esp+28]
		655	mov [edi],ecx
		656	sti
		657	ret
		658
		659
		660	Vesa12_getpixel24:
		661
		662	mov edi,eax ; x
		663	mov eax,ebx ; y
		664	lea edi,[edi+edi*2]
381	serge	665	mov ebx,[BytesPerScanLine]
1	ha	666	mul ebx
		667	add edi,eax
		668	mov eax,edi
		669	shr eax,16
		670	call set_bank
		671	and edi,65535
381	serge	672	add edi,VGABasePtr
1	ha	673	mov ecx,[edi]
		674	and ecx,255256256+255*256+255
		675	sti
		676	ret
		677
		678
		679	Vesa12_getpixel32:
		680
		681	mov edi,eax ; x
		682	mov eax,ebx ; y
		683	shl edi,2
381	serge	684	mov ebx,[BytesPerScanLine]
1	ha	685	xor edx,edx
		686	mul ebx
		687	add edi,eax
		688	mov eax,edi
		689	shr eax,16
		690	call set_bank
		691	and edi,65535
381	serge	692	add edi,VGABasePtr
1	ha	693	mov ecx,[edi]
		694	and ecx,255256256+255*256+255
		695	sti
		696
		697	ret
		698
		699
		700
		701	vesa12_putimage:
283	diamond	702	; ebx = pointer to image
		703	; ecx = size [x\|y]
		704	; edx = coordinates [x\|y]
		705	; ebp = pointer to 'get' function
		706	; esi = pointer to 'init' function
		707	; edi = parameter for 'get' function
1	ha	708
		709	; mov ebx,image
		710	; mov ecx,320*65536+240
		711	; mov edx,20*65536+20
		712
		713	call [disable_mouse]
		714
		715	mov [novesachecksum],dword 0
		716	push esi
		717	push edi
		718	push eax
		719	push ebx
		720	push ecx
		721	push edx
		722	movzx eax,word [esp+2]
		723	movzx ebx,word [esp+0]
379	serge	724	mov ecx,[TASK_BASE]
115	poddubny	725	add eax,[ecx-twdw+WDATA.box.left]
		726	add ebx,[ecx-twdw+WDATA.box.top]
1	ha	727	push eax
		728	mov eax,ebx ; y
381	serge	729	mul dword [BytesPerScanLine]
1	ha	730	pop ecx
		731	add eax,ecx ; x
		732	add eax,ecx
		733	add eax,ecx
381	serge	734	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ? - x start
1	ha	735	jz pi2412
		736	add eax,ecx
		737
		738	pi2412:
		739
381	serge	740	add eax,[LFBAddress]
1	ha	741	mov edi,eax
		742
		743	; x size
		744
283	diamond	745	movzx ecx,word [esp+6]
1	ha	746
		747	mov esi,[esp+8]
		748	movzx ebx,word [esp+4]
		749
		750	; check limits while draw ?
		751
		752	push ecx
379	serge	753	mov eax,[TASK_BASE]
		754	cmp dword [eax+draw_data-CURRENT_TASK+RECT.left], 0
1	ha	755	jnz dbcblimitlset212
379	serge	756	cmp dword [eax+draw_data-CURRENT_TASK+RECT.top], 0
1	ha	757	jnz dbcblimitlset212
379	serge	758	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.right]
381	serge	759	cmp ecx,[ScreenWidth]
1	ha	760	jnz dbcblimitlset212
379	serge	761	mov ecx,[eax+draw_data-CURRENT_TASK+RECT.bottom]
381	serge	762	cmp ecx,[ScreenHeight]
1	ha	763	jnz dbcblimitlset212
		764	pop ecx
283	diamond	765	push 0
1	ha	766	jmp dbcblimitlno212
		767
		768	dbcblimitlset212:
		769
		770	pop ecx
283	diamond	771	push 1
1	ha	772
		773	dbcblimitlno212:
		774
381	serge	775	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ?
283	diamond	776	jnz pi32bit12
1	ha	777
		778	pi24bit12:
		779
		780	newpi12:
		781
		782	push edi
		783	push ecx
		784	push ebx
		785
283	diamond	786	mov edx,edi
381	serge	787	sub edx,[LFBAddress]
1	ha	788	mov ebx,3
		789	div ebx
283	diamond	790	add edx,WinMapAddress
379	serge	791	mov ebx,[CURRENT_TASK]
283	diamond	792	mov bh,[esp+4*3]
1	ha	793
		794	np2412:
		795
283	diamond	796	cmp bl,[edx]
1	ha	797	jnz imp24no12
283	diamond	798	; mov eax,[esi]
		799	push dword [esp+4*3+20]
		800	call ebp
		801	; cmp bh,0
		802	; jz imp24yes12
1	ha	803	; call dbcplimit
		804	; jnz imp24no12
		805
		806	imp24yes12:
		807
283	diamond	808	push edi
1	ha	809	push eax
		810	mov eax,edi
381	serge	811	sub eax,[LFBAddress]
1	ha	812	shr eax,16
		813	call set_bank
283	diamond	814	pop eax
1	ha	815	and edi,0xffff
381	serge	816	add edi,VGABasePtr
283	diamond	817	mov [edi],ax
		818	shr eax,16
		819	mov [edi+2],al
1	ha	820	pop edi
		821
		822	imp24no12:
		823
283	diamond	824	inc edx
		825	; add esi,3
1	ha	826	add edi,3
		827	dec ecx
		828	jnz np2412
		829
		830	np24d12:
		831
		832	pop ebx
		833	pop ecx
		834	pop edi
		835
381	serge	836	add edi,[BytesPerScanLine]
314	diamond	837	add esi,[esp+32]
1	ha	838	dec ebx
283	diamond	839	jnz newpi12
1	ha	840
		841	nonewpi12:
		842
283	diamond	843	pop eax edx ecx ebx eax edi esi
		844	xor eax, eax
		845	ret
1	ha	846
		847
		848	pi32bit12:
		849
		850	newpi3212:
		851
		852	push edi
		853	push ecx
		854	push ebx
		855
283	diamond	856	mov edx,edi
381	serge	857	sub edx,[LFBAddress]
283	diamond	858	shr edx,2
		859	add edx,WinMapAddress
379	serge	860	mov ebx,[CURRENT_TASK]
283	diamond	861	mov bh,[esp+4*3]
1	ha	862
		863	np3212:
		864
283	diamond	865	cmp bl,[edx]
1	ha	866	jnz imp32no12
283	diamond	867	; mov eax,[esi]
		868	push dword [esp+4*3+20]
		869	call ebp
		870	; cmp bh,0
		871	; jz imp32yes12
1	ha	872	; call dbcplimit
		873	; jnz imp32no12
		874
		875	imp32yes12:
		876
283	diamond	877	push edi
1	ha	878	push eax
		879	mov eax,edi
381	serge	880	sub eax,[LFBAddress]
1	ha	881	shr eax,16
		882	call set_bank
283	diamond	883	pop eax
1	ha	884	and edi,0xffff
381	serge	885	mov [edi+VGABasePtr],eax
1	ha	886	pop edi
		887
		888	imp32no12:
		889
283	diamond	890	inc edx
		891	; add esi,3
1	ha	892	add edi,4
		893	dec ecx
		894	jnz np3212
		895
		896	np32d12:
		897
		898	pop ebx
		899	pop ecx
		900	pop edi
		901
381	serge	902	add edi,[BytesPerScanLine]
1	ha	903	dec ebx
283	diamond	904	jnz newpi3212
1	ha	905
		906	nonewpi3212:
		907
283	diamond	908	pop eax edx ecx ebx eax edi esi
		909	xor eax, eax
		910	ret
1	ha	911
		912
		913	vesa12_read_screen_pixel:
		914
		915	and eax,0x3FFFFF
381	serge	916	cmp [ScreenBPP],byte 24 ; 24 or 32 bpp ?
1	ha	917	jz v12rsp24
		918	mov edi,eax
		919	shl edi,2
		920	mov eax,edi
		921	shr eax,16
		922	call set_bank
		923	and edi,65535
381	serge	924	add edi,VGABasePtr
1	ha	925	mov eax,[edi]
		926	and eax,0x00ffffff
		927	ret
		928	v12rsp24:
		929
		930	imul eax,3
		931	mov edi,eax
		932	shr eax,16
		933	call set_bank
		934	and edi,65535
381	serge	935	add edi,VGABasePtr
1	ha	936	mov eax,[edi]
		937	and eax,0x00ffffff
		938	ret
		939

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(root)/kernel/trunk/video/vesa12.inc – Rev 527