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

Rev	Author	Line No.	Line
2288	clevermous	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
10051	ace_dent	3	;; Copyright (C) KolibriOS team 2004-2024. All rights reserved. ;;
2288	clevermous	4	;; Distributed under terms of the GNU General Public License ;;
		5	;; ;;
		6	;; VESA12.INC ;;
		7	;; ;;
		8	;; Vesa 1.2 functions for MenuetOS ;;
		9	;; ;;
		10	;; Copyright 2002 Ville Turjanmaa ;;
		11	;; ;;
		12	;; quickcode@mail.ru - bankswitch for S3 cards ;;
		13	;; ;;
		14	;; See file COPYING for details ;;
		15	;; ;;
		16	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		17
		18
7136	dunkaist	19	TRIDENT = 0
		20	S3_VIDEO = 0
		21	INTEL_VIDEO = 0
2288	clevermous	22
		23	if TRIDENT
		24	if S3_VIDEO or INTEL_VIDEO
		25	stop
		26	end if
		27	end if
		28
		29	if S3_VIDEO
		30	if TRIDENT or INTEL_VIDEO
		31	stop
		32	end if
		33	end if
		34
		35	if INTEL_VIDEO
		36	if S3_VIDEO or TRIDENT
		37	stop
		38	end if
		39	end if
		40
		41
		42	; A complete video driver should include the following types of function
		43	;
		44	; Putpixel
		45	; Getpixel
		46	;
		47	; Drawimage
		48	; Drawbar
		49	;
		50	; Drawbackground
		51	;
		52	;
		53	; Modifying the set_bank -function is mostly enough
		54	; for different Vesa 1.2 setups.
		55
		56	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		57	; set_bank for Trident videocards, work on Trident 9440
		58	; modified by Mario79
		59
		60	if TRIDENT
		61	set_bank:
		62	pushfd
		63	cli
		64	cmp al, [BANK_RW]
		65	je .retsb
		66
		67	mov [BANK_RW], al
		68	push dx
		69	mov dx, 3D8h
		70	out dx, al
		71	pop dx
		72	.retsb:
		73	popfd
		74	ret
		75	end if
		76
		77	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		78	; set_bank for S3 videocards, work on S3 ViRGE PCI (325)
		79	; modified by kmeaw
		80
		81	if S3_VIDEO
		82	set_bank:
		83	pushfd
		84	cli
		85	cmp al, [BANK_RW]
		86	je .retsb
		87
		88	mov [BANK_RW], al
		89	push ax
		90	push dx
		91	push cx
		92	mov cl, al
		93	mov dx, 0x3D4
		94	mov al, 0x38
		95	out dx, al ;CR38 Register Lock 1 ;Note: Traditionally 48h is used to
		96	;unlock and 00h to lock
		97	inc dx
		98	mov al, 0x48
		99	out dx, al ;3d5 -?
		100	dec dx
		101	mov al, 0x31
		102	out dx, al ;CR31 Memory Configuration Register
		103	;0 Enable Base Address Offset (CPUA BASE). Enables bank operation if set, ;disables if clear.
		104	;4-5 Bit 16-17 of the Display Start Address. For the 801/5,928 see index 51h,
		105	;for the 864/964 see index 69h.
		106
		107	inc dx
		108	in al, dx
		109	dec dx
		110	mov ah, al
		111	mov al, 0x31
		112	out dx, ax
		113	mov al, ah
		114	or al, 9
		115	inc dx
		116	out dx, al
		117	dec dx
		118	mov al, 0x35
		119	out dx, al ;CR35 CRT Register Lock
		120	inc dx
		121	in al, dx
		122	dec dx
		123	and al, 0xF0
		124	mov ch, cl
		125	and ch, 0x0F
		126	or ch, al
		127	mov al, 0x35
		128	out dx, al
		129	inc dx
		130	mov al, ch
		131	out dx, ax
		132	dec dx
		133	mov al, 0x51 ;Extended System Control 2 Register
		134	out dx, al
		135	inc dx
		136	in al, dx
		137	dec dx
		138	and al, 0xF3
		139	shr cl, 2
		140	and cl, 0x0C
		141	or cl, al
		142	mov al, 0x51
		143	out dx, al
		144	inc dx
		145	mov al, cl
		146	out dx, al
		147	dec dx
		148	mov al, 0x38
		149	out dx, al
		150	inc dx
		151	xor al, al
		152	out dx, al
		153	dec dx
		154	pop cx
		155	pop dx
		156	pop ax
		157	.retsb:
		158	popfd
		159	ret
		160	end if
		161
		162	;Set bank function for Intel 810/815 chipsets
		163	; ***Modified by Protopopius, Russia.***
		164	; ******* http://menuetos.hut.ru ************
		165	; ************************************************
		166
		167	if INTEL_VIDEO
		168
		169	set_bank:
		170	pushfd
		171	cli
		172
		173	cmp al, [BANK_RW]
		174	je .retsb
		175
		176	mov [BANK_RW], al
		177	push ax
		178	push dx
		179	mov dx, 3CEh
		180	mov ah, al ; Save value for later use
		181	mov al, 10h ; Index GR10 (Address Mapping)
		182	out dx, al ; Select GR10
		183	inc dl
		184	mov al, 3 ; Set bits 0 and 1 (Enable linear page mapping)
		185	out dx, al ; Write value
		186	dec dl
		187	mov al, 11h ; Index GR11 (Page Selector)
		188	out dx, al ; Select GR11
		189	inc dl
		190	mov al, ah ; Write address
		191	out dx, al ; Write the value
		192	pop dx
		193	pop ax
		194	.retsb:
		195	popfd
		196	ret
		197	end if
		198
		199	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}
		200
		201	if (TRIDENT or S3_VIDEO or INTEL_VIDEO)
		202	else
		203	set_bank:
		204	pushfd
		205	cli
		206
		207	cmp al, [BANK_RW]
		208	je .retsb
		209
		210	mov [BANK_RW], al
		211	push ax
		212	push dx
		213	mov ah, al
		214	mov dx, 0x03D4
		215	mov al, 0x39
		216	out dx, al
		217	inc dl
		218	mov al, 0xA5
		219	out dx, al
		220	dec dl
		221	mov al, 6Ah
		222	out dx, al
		223	inc dl
		224	mov al, ah
		225	out dx, al
		226	dec dl
		227	mov al, 0x39
		228	out dx, al
		229	inc dl
		230	mov al, 0x5A
		231	out dx, al
		232	dec dl
		233	pop dx
		234	pop ax
		235
		236	.retsb:
		237	popfd
		238	ret
		239	end if
		240
		241	vesa12_drawbackground:
		242
		243	call [_display.disable_mouse]
		244
		245	push eax
		246	push ebx
		247	push ecx
		248	push edx
		249
		250	xor edx, edx
		251	mov eax, dword[BgrDataWidth]
		252	mov ebx, dword[BgrDataHeight]
		253	mul ebx
		254	mov ebx, 3
		255	mul ebx
		256	mov [imax], eax
9949	Doczom	257	mov eax, [background_window + WDATA.draw_data.left]
		258	mov ebx, [background_window + WDATA.draw_data.top]
2288	clevermous	259	xor edi, edi;no force
		260
		261	v12dp3:
		262
		263	push eax
		264	push ebx
		265
		266	cmp [BgrDrawMode], dword 1 ; tiled background
		267	jne no_vesa12_tiled_bgr
		268
		269	push edx
		270
		271	xor edx, edx
		272	div dword [BgrDataWidth]
		273
		274	push edx
		275	mov eax, ebx
		276	xor edx, edx
		277	div dword [BgrDataHeight]
		278	mov ebx, edx
		279	pop eax
		280
		281	pop edx
		282
		283	no_vesa12_tiled_bgr:
		284
		285	cmp [BgrDrawMode], dword 2 ; stretched background
		286	jne no_vesa12_stretched_bgr
		287
		288	push edx
		289
		290	mul dword [BgrDataWidth]
		291	mov ecx, [Screen_Max_X]
		292	inc ecx
		293	div ecx
		294
		295	push eax
		296	mov eax, ebx
		297	mul dword [BgrDataHeight]
		298	mov ecx, [Screen_Max_Y]
		299	inc ecx
		300	div ecx
		301	mov ebx, eax
		302	pop eax
		303
		304	pop edx
		305
		306	no_vesa12_stretched_bgr:
		307
		308
		309	mov esi, ebx
		310	imul esi, dword [BgrDataWidth]
		311	add esi, eax
		312	lea esi, [esi*3]
		313	add esi, [img_background];IMG_BACKGROUND
		314	pop ebx
		315	pop eax
		316
		317	v12di4:
		318
		319	mov cl, [esi+2]
		320	shl ecx, 16
		321	mov cx, [esi]
		322	pusha
		323	mov esi, eax
		324	mov edi, ebx
		325	mov eax, [Screen_Max_X]
		326	add eax, 1
		327	mul ebx
		328	add eax, [_WinMapAddress]
		329	cmp [eax+esi], byte 1
		330	jnz v12nbgp
		331	mov eax, [BytesPerScanLine]
		332	mov ebx, edi
		333	mul ebx
		334	add eax, esi
		335	lea eax, [VGABasePtr+eax+esi*2]
		336	cmp [ScreenBPP], byte 24
		337	jz v12bgl3
		338	add eax, esi
		339
		340	v12bgl3:
		341
		342	push ebx
		343	push eax
		344
		345	sub eax, VGABasePtr
		346
		347	shr eax, 16
		348	call set_bank
		349	pop eax
		350	and eax, 65535
		351	add eax, VGABasePtr
		352	pop ebx
		353
		354	mov [eax], cx
		355	add eax, 2
		356	shr ecx, 16
		357	mov [eax], cl
		358	sti
		359
		360	v12nbgp:
		361
		362	popa
		363	add esi, 3
		364	inc eax
		365	cmp eax, [draw_data+32+RECT.right]
		366	jg v12nodp31
		367	jmp v12dp3
		368
		369	v12nodp31:
		370
		371	mov eax, [draw_data+32+RECT.left]
		372	inc ebx
		373	cmp ebx, [draw_data+32+RECT.bottom]
		374	jg v12dp4
		375	jmp v12dp3
		376
		377	v12dp4:
		378
		379	pop edx
		380	pop ecx
		381	pop ebx
		382	pop eax
		383	ret
		384
		385
		386	vesa12_drawbar:
		387
		388	call [_display.disable_mouse]
		389
		390	;; mov [novesachecksum],dword 0
		391	sub edx, ebx
		392	sub ecx, eax
		393	push esi
		394	push edi
		395	push eax
		396	push ebx
		397	push ecx
		398	push edx
9679	Doczom	399	mov ecx, [current_slot_idx]
		400	shl ecx, 5
		401	add eax, [ecx + window_data + WDATA.box.left]
		402	add ebx, [ecx + window_data + WDATA.box.top]
2288	clevermous	403	push eax
		404	mov eax, ebx ; y
		405	mov ebx, [BytesPerScanLine]
		406	mul ebx
		407	pop ecx
		408	add eax, ecx ; x
		409	add eax, ecx
		410	add eax, ecx
		411	cmp [ScreenBPP], byte 24; 24 or 32 bpp ? - x start
		412	jz dbpi2412
		413	add eax, ecx
		414
		415	dbpi2412:
		416
		417	add eax, VGABasePtr
		418	mov edi, eax
		419
		420	; x size
		421
		422	mov eax, [esp+4]; [esp+6]
		423	mov ecx, eax
		424	add ecx, eax
		425	add ecx, eax
		426	cmp [ScreenBPP], byte 24; 24 or 32 bpp ? - x size
		427	jz dbpi24312
		428	add ecx, eax
		429
		430	dbpi24312:
		431
		432	mov ebx, [esp+0]
		433
		434	; check limits ?
		435
		436	push eax
		437	push ecx
		438	mov eax, [TASK_BASE]
		439	mov ecx, [eax+draw_data-CURRENT_TASK+RECT.left]
		440	cmp ecx, 0
		441	jnz dbcblimitlset12
		442	mov ecx, [eax+draw_data-CURRENT_TASK+RECT.top]
		443	cmp ecx, 0
		444	jnz dbcblimitlset12
		445	mov ecx, [eax+draw_data-CURRENT_TASK+RECT.right]
		446	cmp ecx, [Screen_Max_X]
		447	jnz dbcblimitlset12
		448	mov ecx, [eax+draw_data-CURRENT_TASK+RECT.bottom]
		449	cmp ecx, [Screen_Max_Y]
		450	jnz dbcblimitlset12
		451	pop ecx
		452	pop eax
		453	push dword 0
		454	jmp dbcblimitlno12
		455
		456	dbcblimitlset12:
		457
		458	pop ecx
		459	pop eax
		460	push dword 1
		461
		462	dbcblimitlno12:
		463
		464	cmp [ScreenBPP], byte 24; 24 or 32 bpp ?
		465	jz dbpi24bit12
		466	jmp dbpi32bit12
		467
		468
		469	; DRAWBAR 24 BBP
		470
		471
		472	dbpi24bit12:
		473
		474	push eax
		475	push ebx
		476	push edx
		477	mov eax, ecx
		478	mov ebx, 3
		479	div ebx
		480	mov ecx, eax
		481	pop edx
		482	pop ebx
		483	pop eax
		484	cld
		485
		486	dbnewpi12:
		487
		488	push ebx
		489	push edi
		490	push ecx
		491
		492	xor edx, edx
		493	mov eax, edi
		494	sub eax, VGABasePtr
		495	mov ebx, 3
		496	div ebx
		497	add eax, [_WinMapAddress]
		498	mov ebx, [CURRENT_TASK]
		499	cld
		500
		501	dbnp2412:
		502
		503	mov dl, [eax]
		504	push eax
		505	push ecx
		506	cmp dl, bl
		507	jnz dbimp24no12
		508	cmp [esp+5*4], dword 0
		509	jz dbimp24yes12
		510	; call dbcplimit
		511	; jnz dbimp24no12
		512
		513	dbimp24yes12:
		514
		515	push edi
		516	mov eax, edi
		517	sub eax, VGABasePtr
		518	shr eax, 16
		519	call set_bank
		520	and edi, 0xffff
		521	add edi, VGABasePtr
		522	mov eax, [esp+8+3*4+16+4+4]
		523	stosw
		524	shr eax, 16
		525	stosb
		526	sti
		527	pop edi
		528	add edi, 3
		529	pop ecx
		530	pop eax
		531	inc eax
		532	loop dbnp2412
		533	jmp dbnp24d12
		534
		535	dbimp24no12:
		536
		537	pop ecx
		538	pop eax
		539	cld
		540	add edi, 3
		541	inc eax
		542	loop dbnp2412
		543
		544	dbnp24d12:
		545
		546	mov eax, [esp+3*4+16+4]
		547	test eax, 0x80000000
		548	jz nodbgl2412
		549	cmp al, 0
		550	jz nodbgl2412
		551	dec eax
		552	mov [esp+3*4+16+4], eax
		553
		554	nodbgl2412:
		555
		556	pop ecx
		557	pop edi
		558	pop ebx
		559	add edi, [BytesPerScanLine]
		560	dec ebx
		561	jz dbnonewpi12
		562	jmp dbnewpi12
		563
		564	dbnonewpi12:
		565
		566	add esp, 7*4
		567
		568	ret
		569
		570
		571	; DRAWBAR 32 BBP
		572
		573
		574	dbpi32bit12:
		575
		576	cld
		577	shr ecx, 2
		578
		579	dbnewpi3212:
		580
		581	push ebx
		582	push edi
		583	push ecx
		584
		585	mov eax, edi
		586	sub eax, VGABasePtr
		587	shr eax, 2
		588	add eax, [_WinMapAddress]
		589	mov ebx, [CURRENT_TASK]
		590	cld
		591
		592	dbnp3212:
		593
		594	mov dl, [eax]
		595	push eax
		596	push ecx
		597	cmp dl, bl
		598	jnz dbimp32no12
		599	cmp [esp+5*4], dword 0
		600	jz dbimp32yes12
		601	; call dbcplimit
		602	; jnz dbimp32no12
		603
		604	dbimp32yes12:
		605
		606	push edi
		607	mov eax, edi
		608	sub eax, VGABasePtr
		609	shr eax, 16
		610	call set_bank
		611	and edi, 0xffff
		612	add edi, VGABasePtr
		613	mov eax, [esp+8+3*4+16+4+4]
		614	stosw
		615	shr eax, 16
		616	stosb
		617	sti
		618	pop edi
		619	add edi, 4
		620	inc ebp
		621	pop ecx
		622	pop eax
		623	inc eax
		624	loop dbnp3212
		625	jmp dbnp32d12
		626
		627	dbimp32no12:
		628
		629	pop ecx
		630	pop eax
		631	inc eax
		632	add edi, 4
		633	inc ebp
		634	loop dbnp3212
		635
		636	dbnp32d12:
		637
		638	mov eax, [esp+12+16+4]
		639	test eax, 0x80000000
		640	jz nodbgl3212
		641	cmp al, 0
		642	jz nodbgl3212
		643	dec eax
		644	mov [esp+12+16+4], eax
		645
		646	nodbgl3212:
		647
		648	pop ecx
		649	pop edi
		650	pop ebx
		651	add edi, [BytesPerScanLine]
		652	dec ebx
		653	jz nodbnewpi3212
		654	jmp dbnewpi3212
		655
		656	nodbnewpi3212:
		657
		658	add esp, 7*4
		659	ret
		660
		661
		662	Vesa12_putpixel24:
		663
		664	mov edi, eax; x
		665	mov eax, ebx; y
		666	lea edi, [edi+edi*2]
		667	mov ebx, [BytesPerScanLine]
		668	mul ebx
		669	add edi, eax
		670	mov eax, edi
		671	shr eax, 16
		672	call set_bank
		673	and edi, 65535
		674	add edi, VGABasePtr
		675	mov eax, [esp+28]
		676	stosw
		677	shr eax, 16
		678	mov [edi], al
		679	sti
		680	ret
		681
		682
		683
		684	Vesa12_putpixel32:
		685
		686	mov edi, eax; x
		687	mov eax, ebx; y
		688	shl edi, 2
		689	mov ebx, [BytesPerScanLine]
		690	mul ebx
		691	add edi, eax
		692	mov eax, edi
		693	shr eax, 16
		694	call set_bank
		695	and edi, 65535
		696	add edi, VGABasePtr
		697	mov ecx, [esp+28]
		698	mov [edi], ecx
		699	sti
		700	ret
		701
		702
		703	Vesa12_getpixel24:
		704
		705	mov edi, eax; x
		706	mov eax, ebx; y
		707	lea edi, [edi+edi*2]
		708	mov ebx, [BytesPerScanLine]
		709	mul ebx
		710	add edi, eax
		711	mov eax, edi
		712	shr eax, 16
		713	call set_bank
		714	and edi, 65535
		715	add edi, VGABasePtr
		716	mov ecx, [edi]
		717	and ecx, 255256256+255*256+255
		718	sti
		719	ret
		720
		721
		722	Vesa12_getpixel32:
		723
		724	mov edi, eax; x
		725	mov eax, ebx; y
		726	shl edi, 2
		727	mov ebx, [BytesPerScanLine]
		728	xor edx, edx
		729	mul ebx
		730	add edi, eax
		731	mov eax, edi
		732	shr eax, 16
		733	call set_bank
		734	and edi, 65535
		735	add edi, VGABasePtr
		736	mov ecx, [edi]
		737	and ecx, 255256256+255*256+255
		738	sti
		739
		740	ret
		741
		742
		743
		744	vesa12_putimage:
		745	; ebx = pointer to image
		746	; ecx = size [x\|y]
		747	; edx = coordinates [x\|y]
		748	; ebp = pointer to 'get' function
		749	; esi = pointer to 'init' function
		750	; edi = parameter for 'get' function
		751
		752	; mov ebx,image
		753	; mov ecx,320*65536+240
		754	; mov edx,20*65536+20
		755
		756	call [_display.disable_mouse]
		757
		758	mov [novesachecksum], dword 0
		759	push esi
		760	push edi
		761	push eax
		762	push ebx
		763	push ecx
		764	push edx
		765	movzx eax, word [esp+2]
		766	movzx ebx, word [esp+0]
9679	Doczom	767	mov ecx, [current_slot_idx]
		768	shl ecx, 5
		769	add eax, [ecx + window_data + WDATA.box.left]
		770	add ebx, [ecx + window_data + WDATA.box.top]
2288	clevermous	771	push eax
		772	mov eax, ebx ; y
		773	mul dword [BytesPerScanLine]
		774	pop ecx
		775	add eax, ecx ; x
		776	add eax, ecx
		777	add eax, ecx
		778	cmp [ScreenBPP], byte 24; 24 or 32 bpp ? - x start
		779	jz pi2412
		780	add eax, ecx
		781
		782	pi2412:
		783
		784	add eax, VGABasePtr
		785	mov edi, eax
		786
		787	; x size
		788
		789	movzx ecx, word [esp+6]
		790
		791	mov esi, [esp+8]
		792	movzx ebx, word [esp+4]
		793
		794	; check limits while draw ?
		795
		796	push ecx
		797	mov eax, [TASK_BASE]
		798	cmp dword [eax+draw_data-CURRENT_TASK+RECT.left], 0
		799	jnz dbcblimitlset212
		800	cmp dword [eax+draw_data-CURRENT_TASK+RECT.top], 0
		801	jnz dbcblimitlset212
		802	mov ecx, [eax+draw_data-CURRENT_TASK+RECT.right]
		803	cmp ecx, [Screen_Max_X]
		804	jnz dbcblimitlset212
		805	mov ecx, [eax+draw_data-CURRENT_TASK+RECT.bottom]
		806	cmp ecx, [Screen_Max_Y]
		807	jnz dbcblimitlset212
		808	pop ecx
		809	push 0
		810	jmp dbcblimitlno212
		811
		812	dbcblimitlset212:
		813
		814	pop ecx
		815	push 1
		816
		817	dbcblimitlno212:
		818
		819	cmp [ScreenBPP], byte 24; 24 or 32 bpp ?
		820	jnz pi32bit12
		821
		822	pi24bit12:
		823
		824	newpi12:
		825
		826	push edi
		827	push ecx
		828	push ebx
		829
		830	mov edx, edi
		831	sub edx, VGABasePtr
		832	mov ebx, 3
		833	div ebx
		834	add edx, [_WinMapAddress]
		835	mov ebx, [CURRENT_TASK]
		836	mov bh, [esp+4*3]
		837
		838	np2412:
		839
		840	cmp bl, [edx]
		841	jnz imp24no12
		842	; mov eax,[esi]
		843	push dword [esp+4*3+20]
		844	call ebp
		845	; cmp bh,0
		846	; jz imp24yes12
		847	; call dbcplimit
		848	; jnz imp24no12
		849
		850	imp24yes12:
		851
		852	push edi
		853	push eax
		854	mov eax, edi
		855	sub eax, VGABasePtr
		856	shr eax, 16
		857	call set_bank
		858	pop eax
		859	and edi, 0xffff
		860	add edi, VGABasePtr
		861	mov [edi], ax
		862	shr eax, 16
		863	mov [edi+2], al
		864	pop edi
		865
		866	imp24no12:
		867
		868	inc edx
		869	; add esi,3
		870	add edi, 3
		871	dec ecx
		872	jnz np2412
		873
		874	np24d12:
		875
		876	pop ebx
		877	pop ecx
		878	pop edi
		879
		880	add edi, [BytesPerScanLine]
		881	add esi, [esp+32]
		882	cmp ebp, putimage_get1bpp
		883	jz .correct
		884	cmp ebp, putimage_get2bpp
		885	jz .correct
		886	cmp ebp, putimage_get4bpp
		887	jnz @f
		888	.correct:
		889	mov eax, [esp+20]
		890	mov byte[eax], 80h
		891	@@:
		892	dec ebx
		893	jnz newpi12
		894
		895	nonewpi12:
		896
		897	pop eax edx ecx ebx eax edi esi
		898	xor eax, eax
		899	ret
		900
		901
		902	pi32bit12:
		903
		904	newpi3212:
		905
		906	push edi
		907	push ecx
		908	push ebx
		909
		910	mov edx, edi
		911	sub edx, VGABasePtr
		912	shr edx, 2
		913	add edx, [_WinMapAddress]
		914	mov ebx, [CURRENT_TASK]
		915	mov bh, [esp+4*3]
		916
		917	np3212:
		918
		919	cmp bl, [edx]
		920	jnz imp32no12
		921	; mov eax,[esi]
		922	push dword [esp+4*3+20]
		923	call ebp
		924	; cmp bh,0
		925	; jz imp32yes12
		926	; call dbcplimit
		927	; jnz imp32no12
		928
		929	imp32yes12:
		930
		931	push edi
		932	push eax
		933	mov eax, edi
		934	sub eax, VGABasePtr
		935	shr eax, 16
		936	call set_bank
		937	pop eax
		938	and edi, 0xffff
		939	mov [edi+VGABasePtr], eax
		940	pop edi
		941
		942	imp32no12:
		943
		944	inc edx
		945	; add esi,3
		946	add edi, 4
		947	dec ecx
		948	jnz np3212
		949
		950	np32d12:
		951
		952	pop ebx
		953	pop ecx
		954	pop edi
		955
		956	add edi, [BytesPerScanLine]
		957	cmp ebp, putimage_get1bpp
		958	jz .correct
		959	cmp ebp, putimage_get2bpp
		960	jz .correct
		961	cmp ebp, putimage_get4bpp
		962	jnz @f
		963	.correct:
		964	mov eax, [esp+20]
		965	mov byte[eax], 80h
		966	@@:
		967	dec ebx
		968	jnz newpi3212
		969
		970	nonewpi3212:
		971
		972	pop eax edx ecx ebx eax edi esi
		973	xor eax, eax
		974	ret
		975
		976
		977	vesa12_read_screen_pixel:
		978
		979	and eax, 0x3FFFFF
		980	cmp [ScreenBPP], byte 24; 24 or 32 bpp ?
		981	jz v12rsp24
		982	mov edi, eax
		983	shl edi, 2
		984	mov eax, edi
		985	shr eax, 16
		986	call set_bank
		987	and edi, 65535
		988	add edi, VGABasePtr
		989	mov eax, [edi]
		990	and eax, 0x00ffffff
		991	ret
		992	v12rsp24:
		993
		994	imul eax, 3
		995	mov edi, eax
		996	shr eax, 16
		997	call set_bank
		998	and edi, 65535
		999	add edi, VGABasePtr
		1000	mov eax, [edi]
		1001	and eax, 0x00ffffff
		1002	ret
		1003

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(root)/kernel/trunk/video/vesa12.inc – Rev 10051