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

Rev	Author	Line No.	Line
1	ha	1	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		2	;; ;;
		3	;; VESA12.INC ;;
		4	;; ;;
		5	;; Vesa 1.2 functions for MenuetOS ;;
		6	;; ;;
		7	;; Copyright 2002 Ville Turjanmaa ;;
		8	;; ;;
		9	;; quickcode@mail.ru - bankswitch for S3 cards ;;
		10	;; ;;
		11	;; See file COPYING for details ;;
		12	;; ;;
		13	;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
		14
		15
		16	; A complete video driver should include the following types of function
		17	;
		18	; Putpixel
		19	; Getpixel
		20	;
		21	; Drawimage
		22	; Drawbar
		23	;
		24	; Drawbackground
		25	;
		26	;
		27	; Modifying the set_bank -function is mostly enough
		28	; for different Vesa 1.2 setups.
		29
5	halyavin	30	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		31	; set_bank for Trident videocards, work on Trident 9440
		32	; modified by Mario79
		33	;set_bank:
		34	;cli
		35	;cmp al,[0xfff2]
		36	;je retsb
		37	;mov [0xfff2],al
		38	;push dx
		39	;mov dx,3D8h
		40	;out dx,al
		41	;pop dx
		42	;retsb:
		43	;sti
		44	;ret
1	ha	45
5	halyavin	46
		47	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
		48	; set_bank for S3 videocards, work on S3 ViRGE PCI (325)
		49	; modified by kmeaw
1	ha	50	set_bank:
		51	cli
		52	cmp al,[0xfff2]
		53	je retsb
		54	mov [0xfff2],al
		55	push ax
		56	push dx
		57	push cx
		58	mov cl, al
		59	mov dx, 0x3D4
		60	mov al, 0x38
		61	out dx, al ;CR38 Register Lock 1 ;Note: Traditionally 48h is used to
		62	;unlock and 00h to lock
		63	inc dx
		64	mov al, 0x48
		65	out dx, al ;3d5 -?
		66	dec dx
		67	mov al, 0x31
		68	out dx, al ;CR31 Memory Configuration Register
		69	;0 Enable Base Address Offset (CPUA BASE). Enables bank operation if set, ;disables if clear.
		70	;4-5 Bit 16-17 of the Display Start Address. For the 801/5,928 see index 51h,
		71	;for the 864/964 see index 69h.
		72
		73	inc dx
		74	in al, dx
		75	dec dx
		76	mov ah, al
		77	mov al, 0x31
		78	out dx, ax
		79	mov al, ah
		80	or al, 9
		81	inc dx
		82	out dx, al
		83	dec dx
		84	mov al, 0x35
		85	out dx, al ;CR35 CRT Register Lock
		86	inc dx
		87	in al, dx
		88	dec dx
		89	and al, 0xF0
		90	mov ch, cl
		91	and ch, 0x0F
		92	or ch, al
		93	mov al, 0x35
		94	out dx, al
		95	inc dx
		96	mov al, ch
		97	out dx, ax
		98	dec dx
		99	mov al, 0x51 ;Extended System Control 2 Register
		100	out dx, al
		101	inc dx
		102	in al, dx
		103	dec dx
		104	and al, 0xF3
		105	shr cl, 2
		106	and cl, 0x0C
		107	or cl, al
		108	mov al, 0x51
		109	out dx, al
		110	inc dx
		111	mov al, cl
		112	out dx, al
		113	dec dx
		114	mov al, 0x38
		115	out dx, al
		116	inc dx
		117	xor al, al
		118	out dx, al
		119	dec dx
		120	pop cx
		121	pop dx
		122	pop ax
		123	retsb:
		124	sti
		125	ret
		126
		127	;Set bank function for Intel 810/815 chipsets
		128	; ***Modified by Protopopius, Russia.***
		129	; ******* http://menuetos.hut.ru ************
		130	; ************************************************
		131	;
		132	;set_bank:
		133	;cli
		134	;cmp al,[0xfff2]
		135	;je retsb
		136	;mov [0xfff2],al
		137	;push ax
		138	;push dx
		139	;mov dx,3CEh
		140	;mov ah,al ; Save value for later use
		141	;mov al,10h ; Index GR10 (Address Mapping)
		142	;out dx,al ; Select GR10
		143	;inc dl
		144	;mov al,3 ; Set bits 0 and 1 (Enable linear page mapping)
		145	;out dx,al ; Write value
		146	;dec dl
		147	;mov al,11h ; Index GR11 (Page Selector)
		148	;out dx,al ; Select GR11
		149	;inc dl
		150	;mov al,ah ; Write address
		151	;out dx,al ; Write the value
		152	;pop dx
		153	;pop ax
		154	;retsb:
		155	;sti
		156	;ret
		157
		158	;!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!}
		159
		160	;set_bank:
		161	; cli
		162	; cmp al,[0xfff2]
		163	; je retsb
		164	; mov [0xfff2],al
		165	; push ax
		166	; push dx
		167	; mov ah,al
		168	; mov dx,0x03D4
		169	; mov al,0x39
		170	; out dx,al
		171	; inc dl
		172	; mov al,0xA5
		173	; out dx,al
		174	; dec dl
		175	; mov al,6Ah
		176	; out dx,al
		177	; inc dl
		178	; mov al,ah
		179	; out dx,al
		180	; dec dl
		181	; mov al,0x39
		182	; out dx,al
		183	; inc dl
		184	; mov al,0x5A
		185	; out dx,al
		186	; dec dl
		187	; pop dx
		188	; pop ax
		189	;
		190	; retsb:
		191	; ret
		192
		193
		194	vesa12_drawbackground:
		195
		196	call [disable_mouse]
		197
		198	push eax
		199	push ebx
		200	push ecx
		201	push edx
		202
		203	xor edx,edx
		204	mov eax,dword[WinMapAddress-8]
		205	mov ebx,dword[WinMapAddress-4]
		206	mul ebx
		207	mov ebx,3
		208	mul ebx
		209	mov [imax],eax
		210	mov eax,[draw_data+32+0]
		211	mov ebx,[draw_data+32+4]
		212	mov edi,0 ;no force
		213
		214	v12dp3:
		215
		216	push eax
		217	push ebx
		218	mov esi,0x300000
		219
		220	cmp [WinMapAddress-12],dword 1 ; tiled background
		221	jne no_vesa12_tiled_bgr
		222
		223	push edx
		224
		225	xor edx,edx
		226	mov ecx,[WinMapAddress-8]
		227	div ecx
		228	mov eax,edx
		229
		230	push eax
		231	mov eax,ebx
		232	xor edx,edx
		233	mov ecx,[WinMapAddress-4]
		234	div ecx
		235	mov ebx,edx
		236	pop eax
		237
		238	pop edx
		239
		240	no_vesa12_tiled_bgr:
		241
		242	cmp [WinMapAddress-12],dword 2 ; stretched background
		243	jne no_vesa12_stretched_bgr
		244
		245	push edx
		246
		247	imul eax,dword [WinMapAddress-8]
		248	xor edx,edx
		249	mov ecx,[0xfe00]
		250	inc ecx
		251	div ecx
		252
		253	push eax
		254	mov eax,ebx
		255	imul eax,dword [WinMapAddress-4]
		256	xor edx,edx
		257	mov ecx,[0xfe04]
		258	inc ecx
		259	div ecx
		260	mov ebx,eax
		261	pop eax
		262
		263	pop edx
		264
		265	no_vesa12_stretched_bgr:
		266
		267
		268	push eax
		269	mov eax,ebx
		270	xor edx,edx
		271	mov ebx,[WinMapAddress-8]
		272	add ebx,[WinMapAddress-8]
		273	add ebx,[WinMapAddress-8]
		274	mul ebx
		275	mov esi,eax
		276	pop eax
		277	add esi,eax
		278	add esi,eax
		279	add esi,eax
		280	add esi,0x300000
		281	pop ebx
		282	pop eax
		283
		284	v12di4:
		285
		286	mov ecx,[esi]
		287	pusha
		288	mov esi,eax
		289	mov edi,ebx
		290	mov eax,[0xfe00]
		291	add eax,1
		292	mul ebx
		293	add eax,esi
		294	add eax,WinMapAddress
		295	cmp [eax],byte 1
		296	jnz v12nbgp
		297	mov eax,[0xfe08]
		298	mov ebx,edi
		299	mul ebx
		300	add eax,esi
		301	add eax,esi
		302	add eax,esi
		303	cmp [0xFBF1],byte 24
		304	jz v12bgl3
		305	add eax,esi
		306
		307	v12bgl3:
		308
		309	push ebx
		310	push eax
		311
		312	sub eax,[0xfe80]
		313
		314	shr eax,16
		315	call set_bank
		316	pop eax
		317	and eax,65535
		318	add eax,0xa0000
		319	pop ebx
		320
		321	mov [eax],cx
		322	add eax,2
		323	shr ecx,16
		324	mov [eax],cl
		325	sti
		326
		327	v12nbgp:
		328
		329	popa
		330	add esi,3
		331	inc eax
		332	cmp eax,[draw_data+32+8]
		333	jg v12nodp31
		334	jmp v12dp3
		335
		336	v12nodp31:
		337
		338	mov eax,[draw_data+32+0]
		339	inc ebx
		340	cmp ebx,[draw_data+32+12]
		341	jg v12dp4
		342	jmp v12dp3
		343
		344	v12dp4:
		345
		346	pop edx
		347	pop ecx
		348	pop ebx
		349	pop eax
		350	ret
		351
		352
		353	vesa12_drawbar:
		354
		355	call [disable_mouse]
		356
		357	;; mov [novesachecksum],dword 0
		358	sub edx,ebx
		359	sub ecx,eax
		360	push esi
		361	push edi
		362	push eax
		363	push ebx
		364	push ecx
		365	push edx
		366	mov ecx,[0x3010]
		367	add eax,[ecx-twdw]
		368	add ebx,[ecx-twdw+4]
		369	push eax
		370	mov eax,ebx ; y
		371	mov ebx,[0xfe08]
		372	mul ebx
		373	pop ecx
		374	add eax,ecx ; x
		375	add eax,ecx
		376	add eax,ecx
		377	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ? - x start
		378	jz dbpi2412
		379	add eax,ecx
		380
		381	dbpi2412:
		382
		383	add eax,[0xfe80]
		384	mov edi,eax
		385
		386	; x size
		387
		388	mov eax,[esp+4] ; [esp+6]
		389	mov ecx,eax
		390	add ecx,eax
		391	add ecx,eax
		392	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ? - x size
		393	jz dbpi24312
		394	add ecx,eax
		395
		396	dbpi24312:
		397
		398	mov ebx,[esp+0]
		399
		400	; check limits ?
		401
		402	push eax
		403	push ecx
		404	mov eax,[0x3010]
		405	mov ecx,[eax+draw_data-0x3000+0]
		406	cmp ecx,0
		407	jnz dbcblimitlset12
		408	mov ecx,[eax+draw_data-0x3000+4]
		409	cmp ecx,0
		410	jnz dbcblimitlset12
		411	mov ecx,[eax+draw_data-0x3000+8]
		412	cmp ecx,[0xfe00]
		413	jnz dbcblimitlset12
		414	mov ecx,[eax+draw_data-0x3000+12]
		415	cmp ecx,[0xfe04]
		416	jnz dbcblimitlset12
		417	pop ecx
		418	pop eax
		419	push dword 0
		420	jmp dbcblimitlno12
		421
		422	dbcblimitlset12:
		423
		424	pop ecx
		425	pop eax
		426	push dword 1
		427
		428	dbcblimitlno12:
		429
		430	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ?
		431	jz dbpi24bit12
		432	jmp dbpi32bit12
		433
		434
		435	; DRAWBAR 24 BBP
		436
		437
		438	dbpi24bit12:
		439
		440	push eax
		441	push ebx
		442	push edx
		443	mov eax,ecx
		444	mov ebx,3
		445	div ebx
		446	mov ecx,eax
		447	pop edx
		448	pop ebx
		449	pop eax
		450	cld
		451
		452	dbnewpi12:
		453
		454	push ebx
		455	push edi
		456	push ecx
		457
		458	xor edx,edx
		459	mov eax,edi
		460	sub eax,[0xfe80]
		461	mov ebx,3
		462	div ebx
		463	add eax,WinMapAddress
		464	mov ebx,[0x3010]
		465	movzx ebx,byte[ebx+0xe]
		466	cld
		467
		468	dbnp2412:
		469
		470	mov dl,[eax]
		471	push eax
		472	push ecx
		473	cmp dl,bl
		474	jnz dbimp24no12
		475	cmp [esp+5*4],dword 0
		476	jz dbimp24yes12
		477	; call dbcplimit
		478	; jnz dbimp24no12
		479
		480	dbimp24yes12:
		481
		482	push edi
		483	mov eax,edi
		484	sub eax,[0xfe80]
		485	shr eax,16
		486	call set_bank
		487	and edi,0xffff
		488	add edi,0xa0000
		489	mov eax,[esp+8+3*4+16+4+4]
		490	stosw
		491	shr eax,16
		492	stosb
		493	sti
		494	pop edi
		495	add edi,3
		496	pop ecx
		497	pop eax
		498	inc eax
		499	loop dbnp2412
		500	jmp dbnp24d12
		501
		502	dbimp24no12:
		503
		504	pop ecx
		505	pop eax
		506	cld
		507	add edi,3
		508	inc eax
		509	loop dbnp2412
		510
		511	dbnp24d12:
		512
		513	mov eax,[esp+3*4+16+4]
		514	test eax,0x80000000
		515	jz nodbgl2412
		516	cmp al,0
		517	jz nodbgl2412
		518	dec eax
		519	mov [esp+3*4+16+4],eax
		520
		521	nodbgl2412:
		522
		523	pop ecx
		524	pop edi
		525	pop ebx
		526	add edi,[0xfe08]
		527	dec ebx
		528	jz dbnonewpi12
		529	jmp dbnewpi12
		530
		531	dbnonewpi12:
		532
		533	add esp,7*4
		534
		535	ret
		536
		537
		538	; DRAWBAR 32 BBP
		539
		540
		541	dbpi32bit12:
		542
		543	cld
		544	shr ecx,2
		545
		546	dbnewpi3212:
		547
		548	push ebx
		549	push edi
		550	push ecx
		551
		552	mov eax,edi
		553	sub eax,[0xfe80]
		554	shr eax,2
		555	add eax,WinMapAddress
		556	mov ebx,[0x3010]
		557	movzx ebx,byte[ebx+0xe]
		558	cld
		559
		560	dbnp3212:
		561
		562	mov dl,[eax]
		563	push eax
		564	push ecx
		565	cmp dl,bl
		566	jnz dbimp32no12
		567	cmp [esp+5*4],dword 0
		568	jz dbimp32yes12
		569	; call dbcplimit
		570	; jnz dbimp32no12
		571
		572	dbimp32yes12:
		573
		574	push edi
		575	mov eax,edi
		576	sub eax,[0xfe80]
		577	shr eax,16
		578	call set_bank
		579	and edi,0xffff
		580	add edi,0xa0000
		581	mov eax,[esp+8+3*4+16+4+4]
		582	stosw
		583	shr eax,16
		584	stosb
		585	sti
		586	pop edi
		587	add edi,4
		588	inc ebp
		589	pop ecx
		590	pop eax
		591	inc eax
		592	loop dbnp3212
		593	jmp dbnp32d12
		594
		595	dbimp32no12:
		596
		597	pop ecx
		598	pop eax
		599	inc eax
		600	add edi,4
		601	inc ebp
		602	loop dbnp3212
		603
		604	dbnp32d12:
		605
		606	mov eax,[esp+12+16+4]
		607	test eax,0x80000000
		608	jz nodbgl3212
		609	cmp al,0
		610	jz nodbgl3212
		611	dec eax
		612	mov [esp+12+16+4],eax
		613
		614	nodbgl3212:
		615
		616	pop ecx
		617	pop edi
		618	pop ebx
		619	add edi,[0xfe08]
		620	dec ebx
		621	jz nodbnewpi3212
		622	jmp dbnewpi3212
		623
		624	nodbnewpi3212:
		625
		626	add esp,7*4
		627	ret
		628
		629
		630	Vesa12_putpixel24:
		631
		632	mov edi,eax ; x
		633	mov eax,ebx ; y
		634	lea edi,[edi+edi*2]
		635	mov ebx,[0xfe08]
		636	mul ebx
		637	add edi,eax
		638	mov eax,edi
		639	shr eax,16
		640	call set_bank
		641	and edi,65535
		642	add edi,0xa0000
		643	mov eax,[esp+28]
		644	stosw
		645	shr eax,16
		646	mov [edi],al
		647	sti
		648	ret
		649
		650
		651
		652	Vesa12_putpixel32:
		653
		654	mov edi,eax ; x
		655	mov eax,ebx ; y
		656	shl edi,2
		657	mov ebx,[0xfe08]
		658	mul ebx
		659	add edi,eax
		660	mov eax,edi
		661	shr eax,16
		662	call set_bank
		663	and edi,65535
		664	add edi,0xa0000
		665	mov ecx,[esp+28]
		666	mov [edi],ecx
		667	sti
		668	ret
		669
		670
		671	Vesa12_getpixel24:
		672
		673	mov edi,eax ; x
		674	mov eax,ebx ; y
		675	lea edi,[edi+edi*2]
		676	mov ebx,[0xfe08]
		677	mul ebx
		678	add edi,eax
		679	mov eax,edi
		680	shr eax,16
		681	call set_bank
		682	and edi,65535
		683	add edi,0xa0000
		684	mov ecx,[edi]
		685	and ecx,255256256+255*256+255
		686	sti
		687	ret
		688
		689
		690	Vesa12_getpixel32:
		691
		692	mov edi,eax ; x
		693	mov eax,ebx ; y
		694	shl edi,2
		695	mov ebx,[0xfe08]
		696	xor edx,edx
		697	mul ebx
		698	add edi,eax
		699	mov eax,edi
		700	shr eax,16
		701	call set_bank
		702	and edi,65535
		703	add edi,0xa0000
		704	mov ecx,[edi]
		705	and ecx,255256256+255*256+255
		706	sti
		707
		708	ret
		709
		710
		711
		712	vesa12_putimage:
		713
		714	; mov ebx,image
		715	; mov ecx,320*65536+240
		716	; mov edx,20*65536+20
		717
		718	call [disable_mouse]
		719
		720	mov [novesachecksum],dword 0
		721	push esi
		722	push edi
		723	push eax
		724	push ebx
		725	push ecx
		726	push edx
		727	movzx eax,word [esp+2]
		728	movzx ebx,word [esp+0]
		729	mov ecx,[0x3010]
		730	add eax,[ecx-twdw]
		731	add ebx,[ecx-twdw+4]
		732	push eax
		733	mov eax,ebx ; y
		734	mov ebx,[0xfe08]
		735	mul ebx
		736	pop ecx
		737	add eax,ecx ; x
		738	add eax,ecx
		739	add eax,ecx
		740	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ? - x start
		741	jz pi2412
		742	add eax,ecx
		743
		744	pi2412:
		745
		746	add eax,[0xfe80]
		747	mov edi,eax
		748
		749	; x size
		750
		751	movzx eax,word [esp+6]
		752	mov ecx,eax
		753	add ecx,eax
		754	add ecx,eax
		755	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ? - x size
		756	jz pi24312
		757	add ecx,eax
		758
		759	pi24312:
		760
		761	mov esi,[esp+8]
		762	movzx ebx,word [esp+4]
		763
		764	; check limits while draw ?
		765
		766	push eax
		767	push ecx
		768	mov eax,[0x3010]
		769	mov ecx,[eax+draw_data-0x3000+0]
		770	cmp ecx,0
		771	jnz dbcblimitlset212
		772	mov ecx,[eax+draw_data-0x3000+4]
		773	cmp ecx,0
		774	jnz dbcblimitlset212
		775	mov ecx,[eax+draw_data-0x3000+8]
		776	cmp ecx,[0xfe00]
		777	jnz dbcblimitlset212
		778	mov ecx,[eax+draw_data-0x3000+12]
		779	cmp ecx,[0xfe04]
		780	jnz dbcblimitlset212
		781	pop ecx
		782	pop eax
		783	push dword 0
		784	jmp dbcblimitlno212
		785
		786	dbcblimitlset212:
		787
		788	pop ecx
		789	pop eax
		790	push dword 1
		791
		792	dbcblimitlno212:
		793
		794	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ?
		795	jz pi24bit12
		796	jmp pi32bit12
		797
		798	pi24bit12:
		799
		800	cld
		801	push eax
		802	push ebx
		803	push edx
		804	xor edx,edx
		805	mov eax,ecx
		806	mov ebx,3
		807	div ebx
		808	mov ecx,eax
		809	pop edx
		810	pop ebx
		811	pop eax
		812
		813	newpi12:
		814
		815	push edi
		816	push esi
		817	push ecx
		818	push ebx
		819
		820	xor edx,edx
		821	mov eax,edi
		822	sub eax,[0xfe80]
		823	mov ebx,3
		824	div ebx
		825	add eax,WinMapAddress
		826	mov ebx,[0x3010]
		827	mov bl,[ebx+0xe]
		828	mov bh,[esp+4*4]
		829
		830	np2412:
		831
		832	cmp bl,[eax]
		833	jnz imp24no12
		834	mov edx,[esi]
		835	cmp bh,0
		836	jz imp24yes12
		837	; call dbcplimit
		838	; jnz imp24no12
		839
		840	imp24yes12:
		841
		842	push eax
		843	push edi
		844	mov eax,edi
		845	sub eax,[0xfe80]
		846	shr eax,16
		847	call set_bank
		848	and edi,0xffff
		849	add edi,0xa0000
		850	mov [edi],edx
		851	shr edx,2
		852	mov [edi+2],dl
		853	sti
		854	pop edi
		855	pop eax
		856
		857	imp24no12:
		858
		859	inc eax
		860	add esi,3
		861	add edi,3
		862	dec ecx
		863	jnz np2412
		864
		865	np24d12:
		866
		867	pop ebx
		868	pop ecx
		869	pop esi
		870	pop edi
		871
		872	add edi,[0xfe08]
		873	xor eax,eax
		874	mov ax,[esp+4+2+4]
		875	lea eax,[eax+eax*2]
		876	add esi,eax
		877	dec ebx
		878	jz nonewpi12
		879	jmp newpi12
		880
		881	nonewpi12:
		882
		883	add esp,7*4
		884	mov eax,0
		885	ret
		886
		887
		888	pi32bit12:
		889
		890	cld
		891	shr ecx,2
		892
		893	newpi3212:
		894
		895	push edi
		896	push esi
		897	push ecx
		898	push ebx
		899
		900	mov eax,edi
		901	sub eax,[0xfe80]
		902	shr eax,2
		903	add eax,WinMapAddress
		904	mov ebx,[0x3010]
		905	mov bl,[ebx+0xe]
		906	mov bh,[esp+4*4]
		907
		908	np3212:
		909
		910	cmp bl,[eax]
		911	jnz imp32no12
		912	mov edx,[esi]
		913	cmp bh,0
		914	jz imp32yes12
		915	; call dbcplimit
		916	; jnz imp32no12
		917
		918	imp32yes12:
		919
		920	push eax
		921	push edi
		922	mov eax,edi
		923	sub eax,[0xfe80]
		924	shr eax,16
		925	call set_bank
		926	and edi,0xffff
		927	add edi,0xa0000
		928	mov [edi],edx
		929	sti
		930	pop edi
		931	pop eax
		932
		933	imp32no12:
		934
		935	inc eax
		936	add esi,3
		937	add edi,4
		938	dec ecx
		939	jnz np3212
		940
		941	np32d12:
		942
		943	pop ebx
		944	pop ecx
		945	pop esi
		946	pop edi
		947
		948	add edi,[0xfe08]
		949	movzx eax,word [esp+4+2+4]
		950	lea eax,[eax+eax*2]
		951	add esi,eax
		952	dec ebx
		953	jz nonewpi3212
		954	jmp newpi3212
		955
		956	nonewpi3212:
		957
		958	add esp,7*4
		959	mov eax,0
		960	ret
		961
		962
		963	vesa12_read_screen_pixel:
		964
		965	and eax,0x3FFFFF
		966	cmp [0xfbf1],byte 24 ; 24 or 32 bpp ?
		967	jz v12rsp24
		968	mov edi,eax
		969	shl edi,2
		970	mov eax,edi
		971	shr eax,16
		972	call set_bank
		973	and edi,65535
		974	add edi,0xa0000
		975	mov eax,[edi]
		976	and eax,0x00ffffff
		977	ret
		978	v12rsp24:
		979
		980	imul eax,3
		981	mov edi,eax
		982	shr eax,16
		983	call set_bank
		984	and edi,65535
		985	add edi,0xa0000
		986	mov eax,[edi]
		987	and eax,0x00ffffff
		988	ret
		989

Subversion Repositories Kolibri OS

(root)/kernel/trunk/video/vesa12.inc – Rev 5