Megadrive/Genesis

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Super Magic Drive research thread

Last post by HardWareMan « Sun Jul 16, 2017 12:26 pm
Replies: 133
by LocalH » Fri Dec 18, 2009 6:53 am
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133 Replies

415082 Views

Last post by HardWareMan
Sun Jul 16, 2017 12:26 pm
Help with 68k Adressing mode calculation

Last post by mickagame « Wed Oct 01, 2025 4:54 pm
Replies: 9
by mickagame » Mon Sep 29, 2025 7:46 am

9 Replies

4041 Views

Last post by mickagame
Wed Oct 01, 2025 4:54 pm
Linear Frame Buffer

Last post by ob1 « Tue Sep 02, 2025 10:15 am

by ob1 » Tue Sep 02, 2025 10:15 am

0 Replies

14785 Views

Last post by ob1
Tue Sep 02, 2025 10:15 am
Increased Sprite Plane to a larger range than 512 (horizontal).

Last post by siudym « Mon Feb 17, 2025 10:48 pm
Replies: 4
by siudym » Mon Jan 20, 2025 7:04 pm

4 Replies

23192 Views

Last post by siudym
Mon Feb 17, 2025 10:48 pm
Anyone doing anything with the Nuked-MD source?

Last post by HardWareMan « Tue Jan 28, 2025 7:17 pm
Replies: 1
by Matt Grum » Tue Jan 28, 2025 3:58 pm

1 Replies

11004 Views

Last post by HardWareMan
Tue Jan 28, 2025 7:17 pm
Script to convert RGB Images to Mega Drive "format"

Last post by bioloid « Sat Nov 23, 2024 5:34 pm
Replies: 6
by seanonearth » Wed May 15, 2024 10:17 pm

6 Replies

19222 Views

Last post by bioloid
Sat Nov 23, 2024 5:34 pm
Teradrive Hardware Info

Last post by RetroSwim « Thu Jul 18, 2024 11:53 am
Replies: 8
by Mask of Destiny » Thu May 31, 2018 5:17 pm

8 Replies

40325 Views

Last post by RetroSwim
Thu Jul 18, 2024 11:53 am
Mega Drive sound

Last post by gamef2 « Fri Jul 12, 2024 8:28 pm

by gamef2 » Fri Jul 12, 2024 8:28 pm

0 Replies

22451 Views

Last post by gamef2
Fri Jul 12, 2024 8:28 pm
Cart Design Questions

Last post by themrcul « Fri Jun 14, 2024 1:39 am
Replies: 74
by themrcul » Tue Jul 17, 2018 2:45 am
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74 Replies

257487 Views

Last post by themrcul
Fri Jun 14, 2024 1:39 am
I'm officially building a microcode-level 68000 core

Last post by Nemesis « Sun Feb 11, 2024 10:39 pm
Replies: 52
by Nemesis » Fri May 03, 2019 11:35 am
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52 Replies

221890 Views

Last post by Nemesis
Sun Feb 11, 2024 10:39 pm
Megadrive vs Snes Hardware

Last post by iNCEPTIONAL « Sat Aug 26, 2023 8:48 pm
Replies: 2
by mickagame » Fri Aug 11, 2023 7:00 am

2 Replies

54000 Views

Last post by iNCEPTIONAL
Sat Aug 26, 2023 8:48 pm
Regarding the 480i mode on Genesis. . . .

Last post by Chilly Willy « Fri Aug 04, 2023 8:21 am
Replies: 23
by iNCEPTIONAL » Thu Dec 15, 2022 12:31 am
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23 Replies

305366 Views

Last post by Chilly Willy
Fri Aug 04, 2023 8:21 am
Kega Fusion with 8MB rom support!

Last post by elfor « Sun Jun 11, 2023 12:21 am

by elfor » Sun Jun 11, 2023 12:21 am

0 Replies

124220 Views

Last post by elfor
Sun Jun 11, 2023 12:21 am
Help with dumping this mega drive 2 multicart from 90s

Last post by notaz « Fri May 19, 2023 11:12 am
Replies: 2
by ouso1999 » Mon Apr 17, 2023 11:43 am

2 Replies

37353 Views

Last post by notaz
Fri May 19, 2023 11:12 am
M68K Bus Control and Vdp

Last post by HardWareMan « Fri Apr 28, 2023 9:35 am
Replies: 26
by mickagame » Sun Dec 08, 2019 1:42 pm
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2
26 Replies

85132 Views

Last post by HardWareMan
Fri Apr 28, 2023 9:35 am
Seeking gens_r57shell_mod_r665 source source

Last post by gamef2 « Sat Mar 04, 2023 4:06 am

by gamef2 » Sat Mar 04, 2023 4:06 am

0 Replies

125238 Views

Last post by gamef2
Sat Mar 04, 2023 4:06 am
Programming Genesis in ASM?

Last post by ateneo « Mon Jan 16, 2023 8:43 pm
Replies: 2
by ateneo » Mon Jan 02, 2023 11:31 pm

2 Replies

21842 Views

Last post by ateneo
Mon Jan 16, 2023 8:43 pm
Vdp Timings

Last post by mickagame « Thu Dec 08, 2022 9:11 pm

by mickagame » Thu Dec 08, 2022 9:11 pm

0 Replies

126534 Views

Last post by mickagame
Thu Dec 08, 2022 9:11 pm
10 MB Flat cart using discrete logic

Last post by mightydidz « Fri Nov 18, 2022 12:45 pm
Replies: 13
by mightydidz » Tue Feb 15, 2022 8:36 pm

13 Replies

60648 Views

Last post by mightydidz
Fri Nov 18, 2022 12:45 pm
Enable / Disable vertical interrupts in Mode Register 2

Last post by Mask of Destiny « Tue Nov 08, 2022 5:38 am
Replies: 3
by siudym » Thu Nov 03, 2022 6:42 pm

3 Replies

23610 Views

Last post by Mask of Destiny
Tue Nov 08, 2022 5:38 am
Help in understanding 68K indexed indirect addressing

Last post by Chilly Willy « Wed Nov 02, 2022 9:02 pm
Replies: 9
by siudym » Sat Oct 29, 2022 10:48 am

9 Replies

27356 Views

Last post by Chilly Willy
Wed Nov 02, 2022 9:02 pm
Undocummented address ranges

Last post by Ti_ « Sat Aug 13, 2022 4:27 am
Replies: 12
by notaz » Wed Apr 08, 2009 10:22 pm

12 Replies

33735 Views

Last post by Ti_
Sat Aug 13, 2022 4:27 am
CRT Safe Area / Overscan?

Last post by Chilly Willy « Tue Aug 09, 2022 9:41 pm
Replies: 5
by AmateurSegaDev » Mon Aug 01, 2022 1:02 am

5 Replies

33011 Views

Last post by Chilly Willy
Tue Aug 09, 2022 9:41 pm
Hunting down remaining emulator bugs

Last post by Wuerfel_21 « Sat Jul 09, 2022 7:23 pm
Replies: 3
by Wuerfel_21 » Fri Feb 18, 2022 8:24 pm

3 Replies

22070 Views

Last post by Wuerfel_21
Sat Jul 09, 2022 7:23 pm
CRAM addresses?

Last post by AmateurSegaDev « Tue Jun 07, 2022 9:14 pm
Replies: 3
by AmateurSegaDev » Sun Jun 05, 2022 5:14 am

3 Replies

24018 Views

Last post by AmateurSegaDev
Tue Jun 07, 2022 9:14 pm
Questions About Megadrive Chips/Signal

Last post by mickagame « Tue May 31, 2022 11:12 am
Replies: 2
by mickagame » Tue May 31, 2022 9:43 am

2 Replies

38033 Views

Last post by mickagame
Tue May 31, 2022 11:12 am
VPA Signal in interrupt process

Last post by mickagame « Tue May 24, 2022 5:00 am
Replies: 7
by mickagame » Mon May 16, 2022 4:51 pm

7 Replies

52411 Views

Last post by mickagame
Tue May 24, 2022 5:00 am
Having issues compiling with Gendev and VSCode

Last post by Charles MacDonald « Sat May 07, 2022 6:20 am
Replies: 1
by gigabyte » Sun Apr 17, 2022 8:35 am

1 Replies

18112 Views

Last post by Charles MacDonald
Sat May 07, 2022 6:20 am
EXG instruction encoding

Last post by flamewing « Sun Feb 20, 2022 7:57 pm
Replies: 4
by OrangyTang » Sun Dec 12, 2021 11:51 pm

4 Replies

25523 Views

Last post by flamewing
Sun Feb 20, 2022 7:57 pm
HBlank wrong hardware behaviour

Last post by greatkreator « Sat Jan 08, 2022 1:37 pm
Replies: 1
by Montserrat » Fri Jan 07, 2022 9:34 am

1 Replies

17653 Views

Last post by greatkreator
Sat Jan 08, 2022 1:37 pm
Horizontal Interruption Mystery

Last post by greatkreator « Tue Jan 04, 2022 11:53 am
Replies: 2
by greatkreator » Mon Jan 03, 2022 6:24 pm

2 Replies

21720 Views

Last post by greatkreator
Tue Jan 04, 2022 11:53 am
Gens r57shell mod- is it a back door.

Last post by Okie « Fri Dec 24, 2021 12:51 am
Replies: 3
by Okie » Wed Dec 22, 2021 11:14 pm

3 Replies

22469 Views

Last post by Okie
Fri Dec 24, 2021 12:51 am
Bank-switched Genesis game with Mode 1 Music vs Sega CD

Last post by Chilly Willy « Wed Dec 22, 2021 12:51 am
Replies: 7
by solarisra » Thu Dec 09, 2021 4:40 am

7 Replies

23210 Views

Last post by Chilly Willy
Wed Dec 22, 2021 12:51 am
Another SNASM question.

Last post by Okie « Sun Dec 05, 2021 7:46 pm

by Okie » Sun Dec 05, 2021 7:46 pm

0 Replies

129708 Views

Last post by Okie
Sun Dec 05, 2021 7:46 pm
( ) around absolute short addressing mode

Last post by Okie « Fri Nov 19, 2021 6:38 pm
Replies: 8
by Okie » Wed Aug 18, 2021 2:17 am

8 Replies

49904 Views

Last post by Okie
Fri Nov 19, 2021 6:38 pm
Sega Virtua Processor Research

Last post by danibus « Mon Sep 27, 2021 1:26 am
Replies: 7
by Ralakimus » Sat Feb 04, 2017 1:25 am

7 Replies

34884 Views

Last post by danibus
Mon Sep 27, 2021 1:26 am
Problem Expanding Super Monaco GP

Last post by Miquel « Mon Sep 20, 2021 7:19 pm
Replies: 9
by TAMarcosTranslations » Tue Feb 23, 2021 4:14 pm

9 Replies

33275 Views

Last post by Miquel
Mon Sep 20, 2021 7:19 pm
MESS Emulator debugging Script

Last post by Okie « Wed Aug 18, 2021 2:25 pm
Replies: 1
by Okie » Sun Aug 15, 2021 11:53 pm

1 Replies

17055 Views

Last post by Okie
Wed Aug 18, 2021 2:25 pm
Dump of the D-CAT16 handheld (Firecore)

Last post by ArcticCircleSystem « Mon Aug 16, 2021 10:21 am
Replies: 16
by TeamEurope » Sun Jun 12, 2016 5:38 pm
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2
16 Replies

84355 Views

Last post by ArcticCircleSystem
Mon Aug 16, 2021 10:21 am
TMSS

Last post by TmEE co.(TM) « Wed Aug 11, 2021 10:11 pm
Replies: 6
by Okie » Wed Jul 21, 2021 6:59 pm

6 Replies

27573 Views

Last post by TmEE co.(TM)
Wed Aug 11, 2021 10:11 pm
MESS Emulator Assembly Offset WRONG

Last post by Okie « Mon Jul 26, 2021 6:35 pm
Replies: 1
by Okie » Wed Jul 21, 2021 7:14 pm

1 Replies

17124 Views

Last post by Okie
Mon Jul 26, 2021 6:35 pm
VRAM write macro $3FFF mask

Last post by Okie « Tue Jul 20, 2021 2:37 pm
Replies: 3
by Okie » Sun Jul 11, 2021 9:22 pm

3 Replies

21020 Views

Last post by Okie
Tue Jul 20, 2021 2:37 pm
Thousand tiles based maps - "How to" using SGDK?

Last post by Stef « Sun Jul 18, 2021 8:14 pm
Replies: 1
by masteries » Sat Jul 17, 2021 5:02 pm

1 Replies

19124 Views

Last post by Stef
Sun Jul 18, 2021 8:14 pm
Problem getting animation working on Sega Genesis.

Last post by gigabyte « Tue Jun 29, 2021 3:51 am
Replies: 2
by gigabyte » Sun Jun 27, 2021 11:39 pm

2 Replies

20118 Views

Last post by gigabyte
Tue Jun 29, 2021 3:51 am
Releasing on Steam (and similar platforms)

Last post by diegzumillo « Sun Jun 27, 2021 5:52 pm
Replies: 10
by diegzumillo » Thu Jun 03, 2021 1:31 am

10 Replies

34139 Views

Last post by diegzumillo
Sun Jun 27, 2021 5:52 pm
VDP FIFO and DMA questions

Last post by TmEE co.(TM) « Fri Apr 09, 2021 9:59 am
Replies: 3
by Near » Fri Apr 09, 2021 2:12 am

3 Replies

65824 Views

Last post by TmEE co.(TM)
Fri Apr 09, 2021 9:59 am
Question on Golden Axe II

Last post by Near « Sun Apr 04, 2021 8:57 am
Replies: 4
by Near » Fri Apr 02, 2021 8:04 pm

4 Replies

127757 Views

Last post by Near
Sun Apr 04, 2021 8:57 am
update on (palette loading problem (new to asm68K))

Last post by ob1 « Sun Mar 14, 2021 8:33 am
Replies: 2
by Cydeenwins » Sat Mar 13, 2021 5:09 pm

2 Replies

19060 Views

Last post by ob1
Sun Mar 14, 2021 8:33 am
palette loading problem (new to asm68K)

Last post by ob1 « Wed Feb 24, 2021 2:07 pm
Replies: 1
by Cydeenwins » Wed Feb 24, 2021 12:49 pm

1 Replies

17821 Views

Last post by ob1
Wed Feb 24, 2021 2:07 pm
Version Register

Last post by TmEE co.(TM) « Tue Feb 16, 2021 7:53 pm
Replies: 6
by mickagame » Mon Feb 15, 2021 7:05 pm

6 Replies

29594 Views

Last post by TmEE co.(TM)
Tue Feb 16, 2021 7:53 pm

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