Video Display Processor

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Last post

Tectoy's weird VDP behavior

Last post by carpediem « Sat Mar 17, 2018 4:32 am
Replies: 24
by cero » Tue Oct 03, 2017 5:31 pm
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24 Replies

1808 Views

Last post by carpediem
Sat Mar 17, 2018 4:32 am
Horizontal Scroll Mode question

Last post by Stef « Fri Dec 08, 2017 9:32 am
Replies: 3
by NightShadow » Thu Dec 07, 2017 7:06 pm

3 Replies

397 Views

Last post by Stef
Fri Dec 08, 2017 9:32 am
16 colors 1 hscan

Last post by Miquel « Thu Nov 02, 2017 1:42 am
Replies: 8
by Jpg3D » Sun Oct 29, 2017 1:23 pm

8 Replies

656 Views

Last post by Miquel
Thu Nov 02, 2017 1:42 am
'torch' effect ?

Last post by Miquel « Sun Oct 22, 2017 4:12 pm
Replies: 5
by KanedaFr » Sat Oct 21, 2017 11:17 pm

5 Replies

459 Views

Last post by Miquel
Sun Oct 22, 2017 4:12 pm
vcounter corruption

Last post by Sik « Mon Oct 02, 2017 5:36 pm
Replies: 1
by notaz » Sun Oct 01, 2017 11:03 pm

1 Replies

290 Views

Last post by Sik
Mon Oct 02, 2017 5:36 pm
International Superstar Soccer Deluxe palette issue?

Last post by Stef « Wed Aug 16, 2017 9:42 am
Replies: 4
by dink » Mon Aug 14, 2017 2:29 pm

4 Replies

650 Views

Last post by Stef
Wed Aug 16, 2017 9:42 am
Is DMA Fill buggy?

Last post by Eke « Tue Jul 11, 2017 10:10 pm
Replies: 11
by Miquel » Tue Jul 11, 2017 11:08 am

11 Replies

794 Views

Last post by Eke
Tue Jul 11, 2017 10:10 pm
Sprites emulation and how they work on Exodus

Last post by Sik « Wed May 31, 2017 3:03 am
Replies: 6
by DarkMoe » Tue May 30, 2017 12:35 pm

6 Replies

750 Views

Last post by Sik
Wed May 31, 2017 3:03 am
Titan's Mega Drive tech docs including Debug Register

Last post by Mask of Destiny « Wed May 31, 2017 12:27 am
Replies: 36
by Kabuto » Wed Apr 19, 2017 6:20 pm
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3
36 Replies

4612 Views

Last post by Mask of Destiny
Wed May 31, 2017 12:27 am
Sprite disappearing on certain conditions ???

Last post by TmEE co.(TM) « Mon Feb 20, 2017 12:11 pm
Replies: 7
by Orion_ » Wed Feb 15, 2017 12:42 pm

7 Replies

1084 Views

Last post by TmEE co.(TM)
Mon Feb 20, 2017 12:11 pm
Mode 4 VRAM Timing

Last post by TmEE co.(TM) « Sat Jan 28, 2017 4:01 pm
Replies: 4
by Mask of Destiny » Sun Jan 01, 2017 9:08 am

4 Replies

909 Views

Last post by TmEE co.(TM)
Sat Jan 28, 2017 4:01 pm
Megadrive video timings

Last post by HardWareMan « Sat Jan 28, 2017 8:26 am
Replies: 120
by Jorge Nuno » Thu Feb 12, 2009 11:04 pm
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9
120 Replies

37621 Views

Last post by HardWareMan
Sat Jan 28, 2017 8:26 am
MD VDP color levels

Last post by r57shell « Sun Dec 25, 2016 1:53 pm
Replies: 10
by TmEE co.(TM) » Tue Oct 20, 2015 5:45 am

10 Replies

3042 Views

Last post by r57shell
Sun Dec 25, 2016 1:53 pm
VDP Tools ? (calc)

Last post by Nainain « Sun Nov 13, 2016 3:19 pm
Replies: 4
by Nainain » Mon Oct 24, 2016 6:42 pm

4 Replies

963 Views

Last post by Nainain
Sun Nov 13, 2016 3:19 pm
DMA failure on different consoles.

Last post by Jpg3D « Fri Nov 11, 2016 6:26 pm
Replies: 12
by Jpg3D » Mon Oct 31, 2016 8:12 pm

12 Replies

1541 Views

Last post by Jpg3D
Fri Nov 11, 2016 6:26 pm
VDP access from Z80 questions

Last post by Miquel « Fri Sep 02, 2016 8:27 pm
Replies: 16
by Miquel » Sun Aug 21, 2016 12:57 pm
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2
16 Replies

2210 Views

Last post by Miquel
Fri Sep 02, 2016 8:27 pm
VDP VRAM access timing

Last post by mickagame « Thu May 26, 2016 12:26 pm
Replies: 36
by Nemesis » Thu Dec 30, 2010 8:41 am
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3
36 Replies

15447 Views

Last post by mickagame
Thu May 26, 2016 12:26 pm
When is the collision bit cleared?

Last post by Sik « Sun May 15, 2016 3:15 am
Replies: 14
by cero » Wed May 11, 2016 9:58 am

14 Replies

1942 Views

Last post by Sik
Sun May 15, 2016 3:15 am
Questions on graphical capabilities

Last post by Trihook « Thu May 12, 2016 8:31 am
Replies: 6
by Trihook » Mon May 09, 2016 9:18 pm

6 Replies

1407 Views

Last post by Trihook
Thu May 12, 2016 8:31 am
Extra VDP Tiles ? more than 1310

Last post by Sik « Fri Mar 25, 2016 3:33 pm
Replies: 9
by NightShadow » Tue Mar 22, 2016 8:35 pm

9 Replies

1855 Views

Last post by Sik
Fri Mar 25, 2016 3:33 pm
VDP 128Kb Extended VRAM mode

Last post by r57shell « Mon Jan 18, 2016 7:03 pm
Replies: 41
by Nemesis » Sun Feb 03, 2013 11:00 am
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41 Replies

21510 Views

Last post by r57shell
Mon Jan 18, 2016 7:03 pm
Is the raster effect (quick palette switch) useless?

Last post by greatkreator « Sat Nov 28, 2015 4:43 pm
Replies: 39
by greatkreator » Mon Jul 30, 2012 2:33 pm
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2

3
39 Replies

10771 Views

Last post by greatkreator
Sat Nov 28, 2015 4:43 pm
SMS and SMS mode output levels

Last post by Sik « Thu Oct 22, 2015 3:30 pm
Replies: 1
by TmEE co.(TM) » Thu Oct 22, 2015 11:55 am

1 Replies

1018 Views

Last post by Sik
Thu Oct 22, 2015 3:30 pm
VDP Debug Register - $C0001C

Last post by mikejmoffitt « Thu Oct 15, 2015 4:48 pm
Replies: 17
by tristanseifert » Fri Jul 27, 2012 7:06 am
1

2
17 Replies

6123 Views

Last post by mikejmoffitt
Thu Oct 15, 2015 4:48 pm
MEGADRIVE : questions about colors

Last post by mikejmoffitt « Wed Oct 07, 2015 4:00 pm
Replies: 3
by tama » Sun Aug 23, 2015 10:10 pm

3 Replies

1489 Views

Last post by mikejmoffitt
Wed Oct 07, 2015 4:00 pm
Impact of planes size

Last post by KanedaFr « Fri Jun 19, 2015 7:58 pm
Replies: 4
by KanedaFr » Wed Jun 17, 2015 8:39 pm

4 Replies

2204 Views

Last post by KanedaFr
Fri Jun 19, 2015 7:58 pm
Understanding VDP

Last post by mickagame « Tue May 26, 2015 7:51 pm
Replies: 10
by mickagame » Sun May 24, 2015 7:30 pm

10 Replies

1938 Views

Last post by mickagame
Tue May 26, 2015 7:51 pm
VRAM range

Last post by MintyTheCat « Sat Mar 21, 2015 10:24 pm
Replies: 1
by tryphon » Fri Mar 20, 2015 9:32 pm

1 Replies

1162 Views

Last post by MintyTheCat
Sat Mar 21, 2015 10:24 pm
Text, different color, one pal

Last post by KanedaFr « Wed Feb 25, 2015 9:11 pm
Replies: 2
by KanedaFr » Wed Feb 18, 2015 11:11 pm

2 Replies

1337 Views

Last post by KanedaFr
Wed Feb 25, 2015 9:11 pm
DMA memory to VRAM

Last post by Chilly Willy « Wed Jan 21, 2015 1:04 am
Replies: 18
by KanedaFr » Tue Jan 13, 2015 4:33 pm
1

2
18 Replies

4576 Views

Last post by Chilly Willy
Wed Jan 21, 2015 1:04 am
VDP Internals

Last post by Charles MacDonald « Sat Jan 03, 2015 10:29 pm
Replies: 56
by Mask of Destiny » Tue Nov 06, 2012 11:44 am
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4
56 Replies

17523 Views

Last post by Charles MacDonald
Sat Jan 03, 2015 10:29 pm
Vdp Signal

Last post by tomaitheous « Fri Dec 19, 2014 5:58 pm
Replies: 4
by mickagame » Wed Oct 08, 2014 8:29 pm

4 Replies

1755 Views

Last post by tomaitheous
Fri Dec 19, 2014 5:58 pm
0xC000 VRAM stuff, and efficiency question.

Last post by Chilly Willy « Tue Sep 23, 2014 5:47 pm
Replies: 4
by Count SymphoniC » Mon Sep 22, 2014 11:40 pm

4 Replies

1609 Views

Last post by Chilly Willy
Tue Sep 23, 2014 5:47 pm
Hex values for VDP registers...

Last post by tryphon « Tue Sep 23, 2014 9:28 am
Replies: 5
by Count SymphoniC » Mon Sep 22, 2014 5:51 pm

5 Replies

1645 Views

Last post by tryphon
Tue Sep 23, 2014 9:28 am
VDP register questions regarding the Sonic 1 disassembly

Last post by MintyTheCat « Wed Sep 17, 2014 4:49 pm
Replies: 1
by BigEvilCorporation » Wed Sep 17, 2014 12:11 pm

1 Replies

1307 Views

Last post by MintyTheCat
Wed Sep 17, 2014 4:49 pm
sprite attribute table

Last post by Eke « Thu Jul 03, 2014 10:57 am
Replies: 13
by powerofrecall » Tue Jul 01, 2014 1:32 am

13 Replies

3401 Views

Last post by Eke
Thu Jul 03, 2014 10:57 am
Confused about VRAM nametables (tiletables) sizes

Last post by Stef « Sun May 04, 2014 9:19 am
Replies: 6
by realbrucest » Wed Apr 30, 2014 11:15 pm

6 Replies

2393 Views

Last post by Stef
Sun May 04, 2014 9:19 am
Every 8 lines scrolled horizontally

Last post by Charles MacDonald « Mon Mar 24, 2014 8:25 pm
Replies: 3
by M-374 LX » Mon Mar 24, 2014 1:50 pm

3 Replies

1626 Views

Last post by Charles MacDonald
Mon Mar 24, 2014 8:25 pm
Palette changing only every two lines

Last post by Chilly Willy « Sun Mar 23, 2014 6:37 pm
Replies: 3
by M-374 LX » Sun Mar 23, 2014 2:12 am

3 Replies

1533 Views

Last post by Chilly Willy
Sun Mar 23, 2014 6:37 pm
Best looking palette fade - what's your opinion?

Last post by powerofrecall « Sat Jan 11, 2014 6:25 pm
Replies: 6
by powerofrecall » Thu Jan 09, 2014 1:37 am

6 Replies

2553 Views

Last post by powerofrecall
Sat Jan 11, 2014 6:25 pm
DMA setup performance penalty?

Last post by djcouchycouch « Mon Jan 06, 2014 8:09 pm
Replies: 8
by djcouchycouch » Sat Jan 04, 2014 10:49 pm

8 Replies

2388 Views

Last post by djcouchycouch
Mon Jan 06, 2014 8:09 pm
Palette color switching in HBlank

Last post by Mask of Destiny « Thu Jan 02, 2014 11:32 pm
Replies: 12
by mitchConnor » Tue Jul 16, 2013 9:46 pm

12 Replies

3579 Views

Last post by Mask of Destiny
Thu Jan 02, 2014 11:32 pm
VDP color $E

Last post by Charles MacDonald « Fri Oct 18, 2013 3:57 am
Replies: 3
by r57shell » Wed Oct 16, 2013 5:42 pm

3 Replies

1871 Views

Last post by Charles MacDonald
Fri Oct 18, 2013 3:57 am
VDP Question

Last post by TmEE co.(TM) « Sun Sep 29, 2013 8:43 am
Replies: 1
by walker7 » Sun Sep 29, 2013 8:29 am

1 Replies

1313 Views

Last post by TmEE co.(TM)
Sun Sep 29, 2013 8:43 am
Some noob question about VDP

Last post by tryphon « Fri Aug 23, 2013 8:37 pm
Replies: 4
by tryphon » Fri Aug 23, 2013 10:15 am

4 Replies

1917 Views

Last post by tryphon
Fri Aug 23, 2013 8:37 pm
HInt Counter timing

Last post by mitchConnor « Fri Jul 19, 2013 12:04 pm
Replies: 2
by mitchConnor » Fri Jul 19, 2013 11:32 am

2 Replies

1599 Views

Last post by mitchConnor
Fri Jul 19, 2013 12:04 pm
Questions related to the vpd

Last post by TmEE co.(TM) « Tue Jul 02, 2013 1:54 am
Replies: 7
by eteream » Thu Jun 27, 2013 6:35 pm

7 Replies

2496 Views

Last post by TmEE co.(TM)
Tue Jul 02, 2013 1:54 am
Accurate Mapping of MD 9-bit to 24-bit Colour-Codes

Last post by r57shell « Sun Jun 09, 2013 6:01 pm
Replies: 20
by MintyTheCat » Mon Mar 04, 2013 6:46 pm
1

2
20 Replies

6577 Views

Last post by r57shell
Sun Jun 09, 2013 6:01 pm
DMA to VRAM from RAM

Last post by r57shell « Wed Jun 05, 2013 1:12 am
Replies: 21
by r57shell » Tue Jun 04, 2013 12:45 am
1

2
21 Replies

5188 Views

Last post by r57shell
Wed Jun 05, 2013 1:12 am
Freeze the screen while updating the VRAM

Last post by Stef « Wed May 08, 2013 10:11 am
Replies: 8
by Bitybity » Fri Jan 25, 2013 1:01 am

8 Replies

2812 Views

Last post by Stef
Wed May 08, 2013 10:11 am

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