Search found 53 matches
- Fri Dec 26, 2014 10:01 pm
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
- Tue Jan 07, 2014 10:48 pm
- Forum: Mega/SegaCD
- Topic: Booting CD from Cart ?
- Replies: 36
- Views: 66800
Yes, I don't remember where that is in the docs offhand, but Sega recommends setting the SOURCE to one word past the start, doing a DMA of N words, then writing the FIRST word using the CPU. That avoids any corruption in the vram. They even provided a snippet of example code that did that. Now if I ...
- Tue Jan 07, 2014 5:11 pm
- Forum: Mega/SegaCD
- Topic: Booting CD from Cart ?
- Replies: 36
- Views: 66800
- Sat Jan 04, 2014 1:34 pm
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
- Wed Jan 01, 2014 10:57 pm
- Forum: Mega/SegaCD
- Topic: Booting CD from Cart ?
- Replies: 36
- Views: 66800
Find a copy of the FLUX ROM http://www.youtube.com/watch?v=Oswpqv22TIg
You can disassemble it and see how it works.
It boots from Cartridge and can control the CD unit completely.
You can disassemble it and see how it works.
It boots from Cartridge and can control the CD unit completely.
- Tue Dec 31, 2013 5:09 pm
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
- Mon Dec 30, 2013 1:45 pm
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
- Mon Dec 30, 2013 3:16 am
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
Interesting. If that's true, it's probably looking for something similar to the boot block Mode 1 is looking for, just at 0x400000 instead of 0x6000. You might try a modified version of the block in the Mode 1 example and see if that runs. That would make yet another way of booting for the MD. :D ...
- Sun Dec 29, 2013 10:13 pm
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
- Sun Dec 29, 2013 4:13 am
- Forum: Mega/SegaCD
- Topic: Testing boot from CARTRIDGE SLOT at 0x400000
- Replies: 14
- Views: 35323
Testing boot from CARTRIDGE SLOT at 0x400000
Offset 0 1 2 3 4 5 6 7 8 9 A B C D E F
00400000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400040 00 00 00 00 00 00 ...
00400000 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400010 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400030 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00400040 00 00 00 00 00 00 ...
- Thu Oct 10, 2013 1:10 am
- Forum: Hardware
- Topic: HDD (or flash) instead of a CD, questions...
- Replies: 158
- Views: 282488
MICON > Controls the low level tasks related to disc reading such as read disc table of contents, jump tracks, keep the data flowing during playback and other boring housekeeping tasks related to CD playback. Usually (on CD players) it's connected to another chip which controls the panel keys and ...
- Wed Oct 09, 2013 11:15 pm
- Forum: Hardware
- Topic: HDD (or flash) instead of a CD, questions...
- Replies: 158
- Views: 282488
- Wed Oct 09, 2013 10:06 pm
- Forum: Hardware
- Topic: HDD (or flash) instead of a CD, questions...
- Replies: 158
- Views: 282488
- Wed Oct 09, 2013 4:04 pm
- Forum: Hardware
- Topic: HDD (or flash) instead of a CD, questions...
- Replies: 158
- Views: 282488
- Thu Aug 22, 2013 1:13 am
- Forum: Hardware
- Topic: HDD (or flash) instead of a CD, questions...
- Replies: 158
- Views: 282488
I'm about to put out a new set, which restores the original behavior of the cartridge booting mechanism you guys discovered a while ago...
I used the TMSS code that was on the bios as data to show the logo. That disrupted the cartridge boot mechanism.
Also the new set of BIOSes will have a routine ...
I used the TMSS code that was on the bios as data to show the logo. That disrupted the cartridge boot mechanism.
Also the new set of BIOSes will have a routine ...