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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?

XAK series works fine.
and FireHawk works too, that make similar problem

But MMC Drive has memory problem.
Most msx2/2+ has FDD.
When I use MMC drive for Disk game,
I must press CTRL key in most case.

Because of this problem, KOEI games doesn't works.
I don't know that internal FDD can be disabled.

You may not modify Konami SCC cartridge.
MMC Disk routines require 8KB banking.
(4000H~5FFFF, 6000H~7FFFF)

If you don't need internal FlashROM disk,
banking circuit can be built easily.

I was also sad,when I destroy case of Nemesis3. T-T
But, it is useful for MGSEL, MetalGear2 disk ver., etc ^^

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But MMC Drive has memory problem. Most msx2/2+ has FDD. When I use MMC drive for Disk game, I must press CTRL key in most case. Because of this problem, KOEI games doesn't works. I don't know that internal FDD can be disabled.

Press SHIFT while turning on the MSX.

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Press SHIFT while turning on the MSX.

When SHIFT key is pressed, it disable all diskrom...

can u use this mmc drive also with a msx computer (like nms 8020, 8220 or hb-f9p and othe rmsx computer without diskdrive? without drive, u dont need diskcontrollerinterface or diskbasic?

Hi Sharksym,

Can I send you a SCC cartridge and some $$$ to get my own MMC floppy disk emulator? I have a loose japanese Metal Gear 2 cartridge, and it's useless without the box and instructions!

I would be very grateful

Dhao: PLEASE tell me you're not serious! -_-;;

~Grauw "guesses he has to learn to interpret smileys"

No, I'm not But I do have countless copies of Nemesis 2 loose carts that I am willing to sacrifice for the greater good of humanity and scientific progress.

Ok... just needed some reassurance .

Well... euhm... I have a spare Snatcher here...

Finally, I have made install files

my.dreamwiz.com/sharksym/MMC_Drive.zip

Here're full informations.

--------------------------------------------------
MMC Interface Cartridge with DISK ROM.

By Yeongman Seo (E-mail:sharksym@hitel.net)
--------------------------------------------------


This is the MMC interface cartridge.
It is used as external FDD.


The ROM file consists of:
- patched DISKROM(16KB)
- Flash/MMC routines(16KB),
- DISK-Image(480KB).
Total 512KB in size.


Minimum required system...
-MSX1 with 64KB RAM, no FDD. (but, Not tested...)
-1 Primary slot. (Not work at Expanded slot)



With the MMC cartridge inserted in the MSX you have:

With MMC,
- Drive A mapped to MMC Disk.
- Drive B mapped to Flash-ROM Disk. (Read only, but very fast)

Without MMC,
- Drive A mapped to Flash-ROM Disk. (Read only, but very fast)
- Drive B is disabled.


The Flash-ROM Disk contains the DOS2 system files(v2.31),
Flash downloader, MMC disk manager and MMC system installer.



INSTALL.BAT : MMC System Installer

How to install..
- Insert MMC interface cartridge on MSX without MMC.
- Now, you can boot drive A (on Flash-ROM Disk).
- Insert MMC into the cartridge.
- Run INSATLL.BAT.
- It will making System Disk (Disk No.0)



ATLOAD.COM : Flash-ROM downloader. (Ver 1.05)

- Atmel AT29C040A (4MBits) only.
- See SCC FlashROM part on circuit.



DISKMAN.COM : MMC Disk Manager. (Ver 1.00)

- Insert/Delete Disk.
Currently, support 2DD(720KB) only
You cannot enter disk name including space. (' ')
- Select Disk
It will mount selected disk to Drive A:
This information is written on System disk.
DISKROM read it at next boot.
- Multiple disk(max.7) can be allocated.
Disk changing is possible by pressing Numeric Keypad.
(0:System Disk Only, 1~7:Multiple Disk)
DISKROM check keys in every DISK I/O.
- Disk No.0 cannot be deleted.
Because, all disk information is saved at Disk No.0 (DISKMAN.DAT)


XCHG_MMC.COM : MMC Disk Exchanger. (Ver 1.00)
- Use this when you exchange another MMC.
It can be used after booting without MMC.
(eg: installing MMC system.)



Note...
- MMC Interface Cartridge can be used at primary slot(1,2)
It will not work at expanded slot.
- Installer disk(Flash-ROM) is DOS2 format.
Installer for DOS1 will release some time, if anyone have a request
- Disk manager handles 2DD only.
- Disk ROM doesn't check write protected.
- MMC I/O is slow, similar to real FDD.
- Some games will not run,
becuase of doubled work area,that is needed by 2 diskroms.
Many games required boot by pressing CTRL key.
- Tested at My MSX only.
MSXturboR A1GT (RAM 1024KB)
MSX2+ A1WSX (RAM 512KB, DOS2 v2.20)



If you have any question, send me E-mail, please.

Yeongman Seo (E-mail:sharksym@hitel.net)

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

Yes, look at Hans Ottens page for the "scc" like mapper by jipe, this can be modifie because it emulates the scc mapper fully

A friend from Spain built this item as well

That looks pretty spiff! I do wonder however if this software can also be modified to work with the Sunrise CF interface...

I finished it,

Thank-you very much for your help Yeongman!



It works fine!

I would like to see if it is possible snout.
So, if sharksym is prepared to sent me the software per mail.
Reflashing can be done many times , the important thing is the changing the ID of the manufacturer
My emailadress : sunhisan@euronet.nl or rhiep@msx.ch
If changements are needed I will contact John