Video Display Processor

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VDP Status Register

Last post by cero « Sat May 15, 2021 5:29 pm
Replies: 28
by Nemesis » Thu Jun 03, 2010 10:54 pm
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28 Replies

12908 Views

Last post by cero
Sat May 15, 2021 5:29 pm
VDP 128Kb Extended VRAM mode

Last post by Mask of Destiny « Wed Mar 10, 2021 1:15 am
Replies: 44
by Nemesis » Sun Feb 03, 2013 11:00 am
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44 Replies

42858 Views

Last post by Mask of Destiny
Wed Mar 10, 2021 1:15 am
VDP VRAM access timing

Last post by Eke « Sun Mar 07, 2021 6:10 pm
Replies: 40
by Nemesis » Thu Dec 30, 2010 8:41 am
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40 Replies

34800 Views

Last post by Eke
Sun Mar 07, 2021 6:10 pm
Megadrive video timings

Last post by mickagame « Fri Mar 05, 2021 9:28 am
Replies: 123
by Jorge Nuno » Thu Feb 12, 2009 11:04 pm
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123 Replies

77025 Views

Last post by mickagame
Fri Mar 05, 2021 9:28 am
Horizontal Cell Scroll + Vertical Plane Scroll

Last post by Manveru « Fri Dec 06, 2019 9:17 am
Replies: 4
by Manveru » Mon Dec 02, 2019 9:43 am

4 Replies

11752 Views

Last post by Manveru
Fri Dec 06, 2019 9:17 am
Upload speed on display time

Last post by Miquel « Sun Nov 17, 2019 7:23 am
Replies: 2
by Miquel » Wed Nov 13, 2019 1:16 am

2 Replies

3895 Views

Last post by Miquel
Sun Nov 17, 2019 7:23 am
Seamless dungeon crawler effect

Last post by Miquel « Mon Aug 12, 2019 4:37 pm
Replies: 11
by KanedaFr » Fri Aug 02, 2019 6:46 pm

11 Replies

9622 Views

Last post by Miquel
Mon Aug 12, 2019 4:37 pm
DMA Fill with autoinc 128

Last post by Miquel « Thu Jul 11, 2019 6:40 pm
Replies: 3
by Manveru » Thu Jul 11, 2019 1:43 pm

3 Replies

4055 Views

Last post by Miquel
Thu Jul 11, 2019 6:40 pm
hv counter details

Last post by Nemesis « Thu Jun 27, 2019 12:12 pm
Replies: 2
by fmahnke » Mon Jun 24, 2019 11:51 am

2 Replies

3785 Views

Last post by Nemesis
Thu Jun 27, 2019 12:12 pm
show a 256 colors picture in MD

Last post by Muzzy « Sun Apr 21, 2019 2:03 pm
Replies: 21
by zhengyaxin_8bit » Thu Jun 21, 2012 3:20 pm
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2
21 Replies

19323 Views

Last post by Muzzy
Sun Apr 21, 2019 2:03 pm
Help scale and rotation sega genesis

Last post by TmEE co.(TM) « Sat Apr 20, 2019 1:53 pm
Replies: 33
by Cristiano Sword » Wed Jan 16, 2019 1:08 pm
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33 Replies

18323 Views

Last post by TmEE co.(TM)
Sat Apr 20, 2019 1:53 pm
Is this just shadow effect?

Last post by TmEE co.(TM) « Sat Apr 13, 2019 9:01 pm
Replies: 1
by danibus » Sat Apr 13, 2019 8:04 pm

1 Replies

3474 Views

Last post by TmEE co.(TM)
Sat Apr 13, 2019 9:01 pm
Question about 512 colors in TITAN demo

Last post by Muzzy « Wed Feb 27, 2019 4:40 pm
Replies: 3
by Muzzy » Tue Feb 26, 2019 6:17 pm

3 Replies

4633 Views

Last post by Muzzy
Wed Feb 27, 2019 4:40 pm
vcounter corruption

Last post by Nemesis « Tue Aug 21, 2018 11:02 pm
Replies: 3
by notaz » Sun Oct 01, 2017 11:03 pm

3 Replies

6807 Views

Last post by Nemesis
Tue Aug 21, 2018 11:02 pm
How h interrupt register works?

Last post by pitcrawler « Tue Jun 26, 2018 10:07 pm
Replies: 7
by Miquel » Sat Jun 09, 2018 5:54 pm

7 Replies

6739 Views

Last post by pitcrawler
Tue Jun 26, 2018 10:07 pm
disable video on vblank, better?

Last post by Miquel « Sat Jun 16, 2018 12:20 pm
Replies: 7
by Miquel » Sun Jun 03, 2018 12:50 am

7 Replies

6348 Views

Last post by Miquel
Sat Jun 16, 2018 12:20 pm
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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2
24 Replies

14911 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

4526 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

6289 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

5692 Views

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

5520 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

7348 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

5569 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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36 Replies

24070 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

6113 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

5848 Views

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

12238 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

5129 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

7637 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

10919 Views

Last post by Miquel
Fri Sep 02, 2016 8:27 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

8451 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

8621 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

7392 Views

Last post by Sik
Fri Mar 25, 2016 3:33 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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39 Replies

26058 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

4727 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

16238 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

5437 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

6256 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

7447 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

4542 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

4970 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

14623 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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56 Replies

44907 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

6330 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

5587 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

5955 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

4663 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

9419 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

6959 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

5416 Views

Last post by Charles MacDonald
Mon Mar 24, 2014 8:25 pm

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