Mega/SegaCD

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Last post

Thoughts on BIOS modding.

Last post by cero « Tue Jan 10, 2023 7:40 am
Replies: 2
by l_oliveira » Mon Jan 09, 2023 4:02 pm

2 Replies

1120 Views

Last post by cero
Tue Jan 10, 2023 7:40 am
MCD manual claiming issues with PSG access from Z80

Last post by Ralakimus « Thu Oct 27, 2022 5:13 pm
Replies: 2
by Ralakimus » Wed Oct 26, 2022 7:53 pm

2 Replies

1081 Views

Last post by Ralakimus
Thu Oct 27, 2022 5:13 pm
Popful Mail

Last post by TascoDLX « Mon Feb 28, 2022 7:50 am
Replies: 16
by Near » Sat Aug 24, 2019 1:58 am
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16 Replies

17420 Views

Last post by TascoDLX
Mon Feb 28, 2022 7:50 am
mcd-verificator (CD core accuracy tests)

Last post by Eke « Sun Feb 27, 2022 9:07 am
Replies: 26
by KRIKzz » Wed Jul 01, 2020 12:13 am
1

2
26 Replies

19160 Views

Last post by Eke
Sun Feb 27, 2022 9:07 am
Batman Returns - source code

Last post by KanedaFr « Wed Feb 23, 2022 6:25 pm

by KanedaFr » Wed Feb 23, 2022 6:25 pm

0 Replies

1069 Views

Last post by KanedaFr
Wed Feb 23, 2022 6:25 pm
Questions on writing a new Mega CD emulator

Last post by Stef « Mon Mar 22, 2021 12:01 pm
Replies: 117
by Near » Thu Apr 25, 2019 1:35 pm
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117 Replies

95748 Views

Last post by Stef
Mon Mar 22, 2021 12:01 pm
Booting? Interrupts? What do I need to do?

Last post by Miquel « Sun Oct 04, 2020 5:04 pm
Replies: 1
by RivetRetro » Thu Oct 01, 2020 6:08 am

1 Replies

5314 Views

Last post by Miquel
Sun Oct 04, 2020 5:04 pm
Diagnostic Software

Last post by KRIKzz « Tue Jun 30, 2020 11:17 pm
Replies: 1
by Sylver » Thu Mar 26, 2020 9:46 am

1 Replies

4548 Views

Last post by KRIKzz
Tue Jun 30, 2020 11:17 pm
Best solution for anime VisualNovel

Last post by KanedaFr « Wed Mar 18, 2020 11:06 am
Replies: 3
by KanedaFr » Sun Mar 08, 2020 10:11 pm

3 Replies

6274 Views

Last post by KanedaFr
Wed Mar 18, 2020 11:06 am
Documenting using the CD drive without the BIOS

Last post by King Of Chaos « Tue Jun 18, 2019 1:17 pm
Replies: 5
by Sik » Wed Jun 12, 2019 7:15 pm

5 Replies

7987 Views

Last post by King Of Chaos
Tue Jun 18, 2019 1:17 pm
FPGA cart of a Sega CD

Last post by King Of Chaos « Tue Jun 18, 2019 1:04 pm
Replies: 1
by cero » Tue Jun 18, 2019 6:44 am

1 Replies

4959 Views

Last post by King Of Chaos
Tue Jun 18, 2019 1:04 pm
Bike shedding a new CD-ROM format

Last post by MetalliC « Mon Jun 17, 2019 1:19 pm
Replies: 20
by Near » Thu May 30, 2019 7:46 pm
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2
20 Replies

19201 Views

Last post by MetalliC
Mon Jun 17, 2019 1:19 pm
Rewriting the BIOS

Last post by Sik « Sat Jun 15, 2019 2:07 am
Replies: 1
by FireRat » Fri Jun 14, 2019 6:33 pm

1 Replies

4702 Views

Last post by Sik
Sat Jun 15, 2019 2:07 am
Japanese MegaCD BIOS 1.00C

Last post by Huge « Mon Jun 10, 2019 8:46 pm
Replies: 1
by TmEE co.(TM) » Mon Jun 10, 2019 6:32 pm

1 Replies

5718 Views

Last post by Huge
Mon Jun 10, 2019 8:46 pm
Compiling a bootable ISO?

Last post by Chilly Willy « Sun Mar 24, 2019 5:43 pm
Replies: 5
by RavenWorks » Sat Mar 23, 2019 5:49 pm

5 Replies

7425 Views

Last post by Chilly Willy
Sun Mar 24, 2019 5:43 pm
Interest in a custom FMV format?

Last post by KillaMaaki « Sat Feb 09, 2019 5:43 am
Replies: 8
by KillaMaaki » Fri Feb 01, 2019 7:35 pm

8 Replies

9012 Views

Last post by KillaMaaki
Sat Feb 09, 2019 5:43 am
ASIC Trace Table Question

Last post by Ralakimus « Sun Oct 14, 2018 12:40 pm
Replies: 5
by Ralakimus » Mon Nov 30, 2015 12:44 pm

5 Replies

10638 Views

Last post by Ralakimus
Sun Oct 14, 2018 12:40 pm
Subcodes only for CD+G ?

Last post by Nemesis « Wed Aug 29, 2018 12:34 am
Replies: 8
by KanedaFr » Mon Jun 19, 2017 11:47 am

8 Replies

10087 Views

Last post by Nemesis
Wed Aug 29, 2018 12:34 am
Mojon Twin's VANE - Visual Novel Engine for SEGA Mega CD in BEX

Last post by Miquel « Fri Nov 24, 2017 10:35 pm
Replies: 2
by haroldoop » Thu Nov 23, 2017 10:02 pm

2 Replies

8093 Views

Last post by Miquel
Fri Nov 24, 2017 10:35 pm
X-Eye Service Manual and Technical Manual

Last post by KanedaFr « Sun Sep 17, 2017 1:12 am
Replies: 3
by Eke » Sat Sep 09, 2017 9:05 pm

3 Replies

7648 Views

Last post by KanedaFr
Sun Sep 17, 2017 1:12 am
SEGA CD Mode 1

Last post by Chilly Willy « Fri Jul 21, 2017 3:16 pm
Replies: 46
by Chilly Willy » Sat Dec 17, 2011 2:12 am
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46 Replies

73745 Views

Last post by Chilly Willy
Fri Jul 21, 2017 3:16 pm
CDD Registers

Last post by KanedaFr « Fri Jul 21, 2017 2:19 am

by KanedaFr » Fri Jul 21, 2017 2:19 am

0 Replies

11310 Views

Last post by KanedaFr
Fri Jul 21, 2017 2:19 am
Sub Header

Last post by KanedaFr « Thu Jul 06, 2017 8:38 am
Replies: 6
by KanedaFr » Wed Jul 05, 2017 11:40 am

6 Replies

8332 Views

Last post by KanedaFr
Thu Jul 06, 2017 8:38 am
/TIME from MegaCD

Last post by TmEE co.(TM) « Wed Jun 21, 2017 12:33 pm
Replies: 1
by KanedaFr » Wed Jun 21, 2017 12:06 pm

1 Replies

5399 Views

Last post by TmEE co.(TM)
Wed Jun 21, 2017 12:33 pm
Cart to test CDC commands

Last post by KanedaFr « Tue Jun 20, 2017 10:36 am
Replies: 4
by KanedaFr » Mon Jun 19, 2017 11:37 am

4 Replies

6738 Views

Last post by KanedaFr
Tue Jun 20, 2017 10:36 am
Question about "Full Graphics Function"

Last post by Ralakimus « Wed Apr 19, 2017 10:29 pm
Replies: 2
by Ralakimus » Mon Apr 03, 2017 3:24 pm

2 Replies

6324 Views

Last post by Ralakimus
Wed Apr 19, 2017 10:29 pm
CDC DMA failing on Kega Fusion?

Last post by l_oliveira « Mon Dec 12, 2016 1:14 pm
Replies: 8
by CrazyMonkey » Tue Oct 04, 2016 10:21 pm

8 Replies

10215 Views

Last post by l_oliveira
Mon Dec 12, 2016 1:14 pm
Sega CD (US) BIOS Disassembly @ GitHub

Last post by DarkMorford « Thu Nov 26, 2015 1:09 am
Replies: 7
by DarkMorford » Tue Jul 07, 2015 2:55 am

7 Replies

10917 Views

Last post by DarkMorford
Thu Nov 26, 2015 1:09 am
New version of SCAT available for download

Last post by Paul Jensen « Sun Aug 16, 2015 9:03 am
Replies: 3
by Paul Jensen » Sun Jun 21, 2015 6:30 am

3 Replies

9161 Views

Last post by Paul Jensen
Sun Aug 16, 2015 9:03 am
CD Initial Program (IP) trying to write to ROM

Last post by Eke « Fri Jul 24, 2015 11:03 am
Replies: 3
by DarkMorford » Wed Jul 22, 2015 8:51 pm

3 Replies

7139 Views

Last post by Eke
Fri Jul 24, 2015 11:03 am
Is there a full/partial dissassembly of the Sega CD BIOS?

Last post by MrTamk1s « Sat Jul 04, 2015 5:13 am
Replies: 4
by db-electronics » Sun Apr 19, 2015 2:56 pm

4 Replies

8569 Views

Last post by MrTamk1s
Sat Jul 04, 2015 5:13 am
BACK-UP SHELL for Sega CD

Last post by bgvanbur « Tue Jun 30, 2015 1:30 am

by bgvanbur » Tue Jun 30, 2015 1:30 am

0 Replies

7786 Views

Last post by bgvanbur
Tue Jun 30, 2015 1:30 am
SegaCD debugging emulator?

Last post by Orion_ « Wed Apr 22, 2015 7:39 pm
Replies: 12
by DarkMorford » Thu Mar 26, 2015 11:00 pm

12 Replies

14521 Views

Last post by Orion_
Wed Apr 22, 2015 7:39 pm
CD+G... FMV playback?

Last post by Stef « Wed Mar 04, 2015 9:30 am
Replies: 2
by MrTamk1s » Mon Mar 02, 2015 9:07 pm

2 Replies

7313 Views

Last post by Stef
Wed Mar 04, 2015 9:30 am
Disassembling the Digital Pictures media codec

Last post by TascoDLX « Thu Feb 05, 2015 6:12 am
Replies: 15
by Paul Jensen » Wed Jul 09, 2014 1:59 pm
1

2
15 Replies

21283 Views

Last post by TascoDLX
Thu Feb 05, 2015 6:12 am
MegaCD2 Japan Bios on PAL MegaCD2

Last post by Chilly Willy « Mon Jan 12, 2015 9:08 pm
Replies: 23
by Orion_ » Sun Oct 12, 2014 3:09 pm
1

2
23 Replies

24783 Views

Last post by Chilly Willy
Mon Jan 12, 2015 9:08 pm
Testing boot from CARTRIDGE SLOT at 0x400000

Last post by TascoDLX « Mon Dec 29, 2014 9:51 pm
Replies: 14
by l_oliveira » Sun Dec 29, 2013 4:13 am

14 Replies

16210 Views

Last post by TascoDLX
Mon Dec 29, 2014 9:51 pm
Custom BIOS from cart

Last post by l_oliveira « Sat Dec 27, 2014 11:12 pm
Replies: 4
by KanedaFr » Tue Nov 18, 2014 12:02 pm

4 Replies

8525 Views

Last post by l_oliveira
Sat Dec 27, 2014 11:12 pm
MOONBASE 0.07 SCD

Last post by Wraith « Tue Jun 24, 2014 10:56 pm

by Wraith » Tue Jun 24, 2014 10:56 pm

0 Replies

7472 Views

Last post by Wraith
Tue Jun 24, 2014 10:56 pm
note! - Color Mechanica / Sega CD album

Last post by matteus « Sun Jun 15, 2014 9:54 pm
Replies: 5
by BatslyAdams » Sat Dec 28, 2013 9:30 pm

5 Replies

9425 Views

Last post by matteus
Sun Jun 15, 2014 9:54 pm
Reading subcode data on the MegaCD

Last post by Snake « Sat May 24, 2014 7:32 am
Replies: 12
by Nemesis » Mon Jan 06, 2014 7:48 pm

12 Replies

19539 Views

Last post by Snake
Sat May 24, 2014 7:32 am
Getting the CDDA time value

Last post by HCKTROX « Wed Apr 09, 2014 11:33 pm

by HCKTROX » Wed Apr 09, 2014 11:33 pm

0 Replies

6958 Views

Last post by HCKTROX
Wed Apr 09, 2014 11:33 pm
CD Backup RAM Cart

Last post by db-electronics « Fri Mar 14, 2014 7:11 pm
Replies: 27
by Charles MacDonald » Sun Nov 28, 2010 6:29 am
1

2
27 Replies

41965 Views

Last post by db-electronics
Fri Mar 14, 2014 7:11 pm
Booting CD from Cart ?

Last post by Chilly Willy « Tue Feb 04, 2014 6:08 pm
Replies: 36
by Orion_ » Wed Jan 01, 2014 8:59 pm
1

2

3
36 Replies

32262 Views

Last post by Chilly Willy
Tue Feb 04, 2014 6:08 pm
Manufacturing an error [CD 32X]

Last post by powerofrecall « Tue Nov 26, 2013 6:04 am
Replies: 3
by MNc99 » Sun Aug 25, 2013 11:10 pm

3 Replies

8495 Views

Last post by powerofrecall
Tue Nov 26, 2013 6:04 am
Sega CD booting

Last post by kubilus1 « Mon Nov 25, 2013 8:46 pm
Replies: 8
by Xynxyn » Tue Nov 05, 2013 8:13 am

8 Replies

11041 Views

Last post by kubilus1
Mon Nov 25, 2013 8:46 pm
Usercalls and _LEVEL3

Last post by Chilly Willy « Sun Sep 08, 2013 7:25 am
Replies: 1
by HCKTROX » Sun Sep 08, 2013 3:05 am

1 Replies

6777 Views

Last post by Chilly Willy
Sun Sep 08, 2013 7:25 am
Problems with running a .bin with MESS

Last post by MihajelPetrovic « Mon Sep 02, 2013 5:27 am
Replies: 7
by MihajelPetrovic » Sun Sep 01, 2013 2:57 pm

7 Replies

10979 Views

Last post by MihajelPetrovic
Mon Sep 02, 2013 5:27 am
CDDA oddities

Last post by Chilly Willy « Wed Aug 28, 2013 2:23 am
Replies: 3
by Bitybity » Tue Aug 27, 2013 3:04 am

3 Replies

7894 Views

Last post by Chilly Willy
Wed Aug 28, 2013 2:23 am
Secondary results while Halting the Sub-CPU

Last post by Chilly Willy « Fri Aug 09, 2013 3:30 am
Replies: 1
by Bitybity » Fri Aug 09, 2013 3:20 am

1 Replies

6793 Views

Last post by Chilly Willy
Fri Aug 09, 2013 3:30 am

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