MMC Drive Interface...

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By sharksym

Rookie (32)

sharksym's picture

11-09-2004, 07:11

Hi~

I had made MMC Interface Cartridge.
Konami Nemesis3 Cartridge was used for modification Smile
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 Smile
my.dreamwiz.com/sharksym/image_msx/MMC%20Drive%20case

my.dreamwiz.com/sharksym/image_msx/MMC%20Drive%20front

my.dreamwiz.com/sharksym/image_msx/MMC%20Drive%20work

my.dreamwiz.com/sharksym/image_msx/MMC%20Drive%20Schematic

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By usuario_msx2

Hero (586)

usuario_msx2's picture

11-09-2004, 11:38

Nice job!
Congratulations!

By Sonic_aka_T

Enlighted (4130)

Sonic_aka_T's picture

11-09-2004, 13:21

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! Tongue

By usuario_msx2

Hero (586)

usuario_msx2's picture

11-09-2004, 13:57

is possible to get the patched diskrom?

By GuyveR800

Prophet (3974)

GuyveR800's picture

11-09-2004, 14:18

Cool, the cart looks like a Borg Smile

By jpgrobler

Master (146)

jpgrobler's picture

11-09-2004, 15:26

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

By elements

Master (180)

elements's picture

12-09-2004, 11:01

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?

By Bernard

Resident (37)

Bernard's picture

12-09-2004, 11:28

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?

Hi~

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

By sunrise

Paragon (1091)

sunrise's picture

12-09-2004, 11:46

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.

By elements

Master (180)

elements's picture

12-09-2004, 12:01

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?

By sharksym

Rookie (32)

sharksym's picture

12-09-2004, 12:44

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 Smile
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 Smile
Disk changing is possible by pressing Numeric Keypad.(0~7)

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