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

161160 Views

Last post by HardWareMan
Sun Jul 16, 2017 12:26 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

6678 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

309 Views

Last post by Chilly Willy
Tue Aug 09, 2022 9:41 pm
Cart Design Questions

Last post by themrcul « Sat Jul 30, 2022 9:01 am
Replies: 68
by themrcul » Tue Jul 17, 2018 2:45 am
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68 Replies

44032 Views

Last post by themrcul
Sat Jul 30, 2022 9:01 am
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

1001 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

728 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

432 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

899 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

587 Views

Last post by Charles MacDonald
Sat May 07, 2022 6:20 am
10 MB Flat cart using discrete logic

Last post by Mask of Destiny « Tue Apr 19, 2022 1:13 am
Replies: 8
by mightydidz » Tue Feb 15, 2022 8:36 pm

8 Replies

2530 Views

Last post by Mask of Destiny
Tue Apr 19, 2022 1:13 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

1480 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

967 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

1086 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

1225 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

1812 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

1000 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

4680 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

9348 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

4659 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

1456 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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16 Replies

14181 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

3018 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

1609 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

2195 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

1742 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

2217 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

4070 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

4066 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

3254 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

2757 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

2054 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

4190 Views

Last post by TmEE co.(TM)
Tue Feb 16, 2021 7:53 pm
68K inner workings

Last post by Gigasoft « Tue Feb 16, 2021 3:42 am
Replies: 6
by Gigasoft » Fri Jan 04, 2019 8:46 pm

6 Replies

9041 Views

Last post by Gigasoft
Tue Feb 16, 2021 3:42 am
68K Memory access

Last post by Gigasoft « Mon Feb 15, 2021 6:29 pm
Replies: 9
by mickagame » Tue Jan 19, 2021 8:44 pm

9 Replies

5168 Views

Last post by Gigasoft
Mon Feb 15, 2021 6:29 pm
Need help to understand sonic rom [Resolved]

Last post by mickagame « Tue Feb 09, 2021 7:41 pm
Replies: 2
by mickagame » Mon Feb 08, 2021 8:30 pm

2 Replies

2445 Views

Last post by mickagame
Tue Feb 09, 2021 7:41 pm
VDP Interrupt Processing

Last post by Stef « Fri Feb 05, 2021 1:18 pm
Replies: 3
by mickagame » Wed Feb 03, 2021 8:13 pm

3 Replies

3276 Views

Last post by Stef
Fri Feb 05, 2021 1:18 pm
I'm officially building a microcode-level 68000 core

Last post by flamewing « Tue Feb 02, 2021 1:36 pm
Replies: 44
by Nemesis » Fri May 03, 2019 11:35 am
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44 Replies

44579 Views

Last post by flamewing
Tue Feb 02, 2021 1:36 pm
68K cycle timing test ROM?

Last post by mickagame « Wed Jan 27, 2021 12:06 pm
Replies: 11
by Near » Tue Jun 04, 2019 3:06 am

11 Replies

11463 Views

Last post by mickagame
Wed Jan 27, 2021 12:06 pm
Discrepency in TMSS ROM Dumps?

Last post by ArcticCircleSystem « Fri Jan 15, 2021 3:00 am
Replies: 5
by ArcticCircleSystem » Mon Jan 11, 2021 6:47 pm

5 Replies

4336 Views

Last post by ArcticCircleSystem
Fri Jan 15, 2021 3:00 am
Megadrive ASIA Configuration

Last post by mickagame « Mon Nov 30, 2020 7:16 am
Replies: 2
by mickagame » Sun Nov 29, 2020 7:47 am

2 Replies

3982 Views

Last post by mickagame
Mon Nov 30, 2020 7:16 am
emulators or gamepad input problem?

Last post by Sik « Thu Nov 19, 2020 10:06 am
Replies: 1
by SeregaZ » Wed Nov 18, 2020 9:04 pm

1 Replies

2913 Views

Last post by Sik
Thu Nov 19, 2020 10:06 am
Good emulator for a newb wanting to make emulation modifications?

Last post by Stef « Tue Oct 13, 2020 8:17 am
Replies: 2
by maaarghk » Mon Oct 12, 2020 9:34 am

2 Replies

3924 Views

Last post by Stef
Tue Oct 13, 2020 8:17 am
Best tool for password reverse engineering?

Last post by cero « Mon Sep 28, 2020 5:28 pm
Replies: 5
by Bobblen » Tue Jul 19, 2016 8:43 pm

5 Replies

5914 Views

Last post by cero
Mon Sep 28, 2020 5:28 pm
List of every detectable difference in Mega Drive revisions?

Last post by Mask of Destiny « Wed Sep 02, 2020 2:30 am
Replies: 17
by Sik » Sat Aug 15, 2020 8:41 am
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2
17 Replies

14547 Views

Last post by Mask of Destiny
Wed Sep 02, 2020 2:30 am
Weird timing issue?

Last post by Gideon Zhi « Wed Aug 19, 2020 2:14 pm
Replies: 2
by Gideon Zhi » Wed Aug 19, 2020 5:22 am

2 Replies

3333 Views

Last post by Gideon Zhi
Wed Aug 19, 2020 2:14 pm
How prone is Sonic 2 to bugs?

Last post by MrD « Thu Jul 09, 2020 2:34 pm

by MrD » Thu Jul 09, 2020 2:34 pm

0 Replies

5953 Views

Last post by MrD
Thu Jul 09, 2020 2:34 pm
Most compatible way to jump to game image on hardware - making my own cart

Last post by MrD « Mon Jun 29, 2020 11:23 pm
Replies: 21
by MrD » Fri Jun 19, 2020 8:26 am
1

2
21 Replies

13616 Views

Last post by MrD
Mon Jun 29, 2020 11:23 pm
Gunstar Heros disassembly?

Last post by ryanfaescotland « Sat Jun 20, 2020 1:27 am
Replies: 37
by OrangyTang » Tue Feb 23, 2016 4:51 pm
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37 Replies

25996 Views

Last post by ryanfaescotland
Sat Jun 20, 2020 1:27 am
68k edge case: btst dN,#immed

Last post by ryanfaescotland « Wed Jun 17, 2020 9:00 pm
Replies: 12
by flamewing » Fri Sep 21, 2018 5:20 pm

12 Replies

13105 Views

Last post by ryanfaescotland
Wed Jun 17, 2020 9:00 pm
Alternative to Vasm assembler?

Last post by MrD « Thu May 28, 2020 10:36 pm
Replies: 27
by MrD » Tue Apr 21, 2020 7:25 pm
1

2
27 Replies

18836 Views

Last post by MrD
Thu May 28, 2020 10:36 pm

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