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[dbjh]

Dirk and I are busy adding support for the MD-PRO to uCON64, based on info sent by Tomy (via timofonic). BTW thanks Tomy!
I was wondering what the structure of a "multi-game file" for the MD-PRO is. Is it simply MDPACKU4.BIN prepended to several concatenated ROM images? Or must the ROM images be aligned to say a 1 Mbit boundary? And what about MDPACKU4.BIN, must it be modified (on the flash card) to "inform" it about the games on the flash card?

[leo]

At MDPACKU4.BIN, offset $8000 have a table, that used for games identify, this sturcture you can see procedure 'GenListtoBuff' , the offset $1E is bankcode , that is point to the sub-game's start page, for example select first game is rambo 2M, second game is bubblebubble 2M,
bankcode on fist games item is 1, and next game item is 2, so the minimum page size is 2M. the sturcture on card memory is first 2M store on MDPACKU4.BIN size is 2M, after that is 2M size of rambo, after that is 2M size of bubblebubble.

[dbjh]

Thanks for the reply, but could you please refrase it a bit? I don't completely understand what you are trying to say. I interpret your answer as follows:
1.) MDPACKU4.BIN contains a table at offset $8000.
2.) This table is used to locate the games in the multi-game file.
3.) At offset $1E in the table is something called a "bankcode".
4.) This bankcode points to a 2 Mbit page. The first page is addressed with value 1, the second with value 2 and so on.
5.) MDPACKU4.BIN itself is 2 Mbit so the lowest value in the table is 2.

I assume the next game would be addressed via offset $1F. But how does MDPACKU4.BIN "know" what the last entry in the table is? Is there a sentinel value?

[leo]

This is a description about $8000 table, this table construction is make by One or many items, (maximum 31 items), One item size have $20 bytes needed , that mean first game info record on $8000, second game info record on offset $8020, third game info record on offset $8040 .....
Detail about One item, first $1c bytes used for games name (when the games name fill out $00, mean no next game item ), the offset $1D alway $00, the offset $1E is page number (this game begin page, for example: the game start at $C0000 the value is $03), offset $1F is a flag/config about this game (detail please see GenListTobuff procedure).
I wish this information can help you .

[dbjh]

[leo]

sorry, I busy to develop next product , so too late to reply you.