Hi~

I had made MMC Interface Cartridge.
Konami Nemesis3 Cartridge was used for modification
I had patched DISKROM and added Flash-ROM & MMC access routines.
(total 24KB, works with SCC mapper)
It works as a external FDD.

Here're some pictures and schematic

Nice job!
Congratulations!

Next time, please use a 'eric and the floaters' cartridge though... It's a real shame to see an original Nemesis3 in that state... :/ On the other hand, love the switch!

is possible to get the patched diskrom?

Cool, the cart looks like a Borg

Nice! How does it perform compared to hdd / cf / etc

nice work!!! wat is the maximum capacity of the mmc what u can use in the msx?
is it simple to make a own one? is good idea to make some productions to sell it for msx users.

is it possible to use as harddrive?

Looks cool.

I still don't get though what this device is actually doing. Is it an external FDD like you wrote or can you use the memory card as a harddisk?

Quote:

Hi~ I had made MMC Interface Cartridge. Konami Nemesis3 Cartridge was used for modification I had patched DISKROM and added Flash-ROM & MMC access routines. (total 24KB, works with SCC mapper) It works as a external FDD.

I think bernard it is using the memory as a harddisk.
I see the same principal as we use for the CF.
However, I would prefer -although I like this initiative- to look simply to the adaptor from the pretec company that is capable to use memorystick,mmc and sd cards in it with the same working procedure and leaves your cartridges undamaged. To look at this you can find this adaptor as piture on our website.
And you see the advantage is that you can convert from sm/memorystick etc.The other way aropund forget it.

i see on the picture a 256 MB mmc card. but can u use the full capacity of the 256 MB card with this mmccatridge?
u need scc catridge to built like his?

I'll release ROM file in a few days.

ROM file is consist of patched DISKROM(16KB), Flash/MMC routines(16KB), DISK-Image(480KB). Total 512KB sized.

Drive A is mapped to MMC Disk.
Drive B is mapped to Flash-ROM Disk. (Read only, but very fast
Flash-ROM Disk contains DOS2 system files, Flash downloader and MMC disk manager.

The MMC Cartridge can be used for usual Flash-SCC(512KB) Cartridge.
(eg: MetalGear2 can be downloaded.)

I didn't try patch for DOS2 kernel.
And currently, MMC disk manager can handle only multiple 2DD disks.
(FAT12/16 HDD partition may be usable in a future...or not
Disk changing is possible by pressing Numeric Keypad.(0~7)

Here're more pictures for utilities.

It works as disk drive.
But, its operation is little different from usual ide interface.

MMC manager allocates disk area in MMC.
Disk area is not limited by size.
360KB, 720KB, 1.44MB, 2.88MB, 11.2MB, etc are possible.
But, current MMC manager handles 2DD disk(720KB).
Disk IO routines recognize disk by Begenning address(MMC) of 0 sector.

Any combination is possible like below when 256MB MMC is used:
50 disks of 1DD(360KB) +
100 disks of 2DD(720KB) +
20 disks of HD(2.88MB) +
5 disks of HD(11.2MB) + ...

Very interesting! Is this interface also capable of handling with sector-based copyprotections? Can I, for example, create disk images of my XAK3 disks and run it from MMC?

Is there a way of creating the MMC interface without destroying a valuable and extremely cool SCC cartridge?

but u need scc catridge for this ?