Video Display Processor

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DMA fills with auto-increment result in stray byte at the start

Last post by Mask of Destiny « Tue Jan 07, 2025 11:11 pm
Replies: 2
by Matt Grum » Thu Jan 02, 2025 1:44 pm

2 Replies

2000 Views

Last post by Mask of Destiny
Tue Jan 07, 2025 11:11 pm
Man, Blast Processing is not what I thought it was. . . .

Last post by iNCEPTIONAL « Sat Sep 16, 2023 8:50 am
Replies: 5
by iNCEPTIONAL » Mon Dec 12, 2022 6:35 pm

5 Replies

28758 Views

Last post by iNCEPTIONAL
Sat Sep 16, 2023 8:50 am
Capabilities of various VDPs at parallax effects

Last post by iNCEPTIONAL « Fri Sep 15, 2023 7:47 pm
Replies: 34
by iNCEPTIONAL » Mon Dec 05, 2022 8:52 pm
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34 Replies

179390 Views

Last post by iNCEPTIONAL
Fri Sep 15, 2023 7:47 pm
DMA during HBlank ...

Last post by iNCEPTIONAL « Sat Jul 01, 2023 12:26 pm
Replies: 2
by iNCEPTIONAL » Sat Jul 01, 2023 5:45 am

2 Replies

25522 Views

Last post by iNCEPTIONAL
Sat Jul 01, 2023 12:26 pm
Swapping in/out background/sprite tiles

Last post by iNCEPTIONAL « Sat Jul 01, 2023 9:45 am
Replies: 9
by iNCEPTIONAL » Fri Jun 23, 2023 9:13 am

9 Replies

73019 Views

Last post by iNCEPTIONAL
Sat Jul 01, 2023 9:45 am
Regarding Street Fighter II: Special Champion Edition . . .

Last post by iNCEPTIONAL « Tue Jun 20, 2023 4:59 pm
Replies: 4
by iNCEPTIONAL » Mon Jun 05, 2023 10:14 am

4 Replies

6994 Views

Last post by iNCEPTIONAL
Tue Jun 20, 2023 4:59 pm
Some DMA questions, Exodus emulator hangs

Last post by Sjoerd « Tue Feb 21, 2023 10:19 am
Replies: 2
by Sjoerd » Fri Feb 17, 2023 12:53 pm

2 Replies

9361 Views

Last post by Sjoerd
Tue Feb 21, 2023 10:19 am
Understanding the VDP's scrolling capabilities.

Last post by Chilly Willy « Sun Dec 11, 2022 3:29 pm
Replies: 67
by sheath » Wed Mar 31, 2010 6:19 pm
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67 Replies

100320 Views

Last post by Chilly Willy
Sun Dec 11, 2022 3:29 pm
SMS and SMS mode output levels

Last post by Eke « Thu Jun 02, 2022 8:28 pm
Replies: 4
by TmEE co.(TM) » Thu Oct 22, 2015 11:55 am

4 Replies

85123 Views

Last post by Eke
Thu Jun 02, 2022 8:28 pm
Palette color switching in HBlank

Last post by Stef « Tue Nov 02, 2021 2:23 pm
Replies: 14
by mitchConnor » Tue Jul 16, 2013 9:46 pm

14 Replies

28974 Views

Last post by Stef
Tue Nov 02, 2021 2:23 pm
CRAM question

Last post by TmEE co.(TM) « Sun Sep 12, 2021 1:49 am
Replies: 1
by Okie » Sat Sep 11, 2021 5:58 pm

1 Replies

9552 Views

Last post by TmEE co.(TM)
Sun Sep 12, 2021 1:49 am
VDP Resolution

Last post by TmEE co.(TM) « Wed Aug 11, 2021 10:26 pm
Replies: 3
by Okie » Mon Aug 02, 2021 2:20 am

3 Replies

9698 Views

Last post by TmEE co.(TM)
Wed Aug 11, 2021 10:26 pm
Register 2 VRAM Location Question

Last post by Okie « Sun Jul 11, 2021 1:01 am
Replies: 2
by Okie » Sun Jul 04, 2021 11:13 pm

2 Replies

7111 Views

Last post by Okie
Sun Jul 11, 2021 1:01 am
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

200725 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

101530 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

138038 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

196593 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

20769 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

11576 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

26346 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

12123 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

11958 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

39574 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

52936 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

9524 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

12687 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

14378 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

16168 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

17637 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

38240 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

11759 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

15562 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

14319 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

13577 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

22135 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

13848 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

71783 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

15623 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

15445 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

28609 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

13017 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

19173 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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16 Replies

26916 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

20211 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

17344 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

18235 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

56033 Views

Last post by greatkreator
Sat Nov 28, 2015 4:43 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
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2
17 Replies

35220 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

12293 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

13396 Views

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

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