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S-RAM (PAC, FM-PAC) Support?

Door HHC

Rookie (30)

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03-09-2003, 18:11

I found PAC (Pana Amusement Catridge) these days and I tested some games.
I thought that S-RAM of FM-PAC and that of PAC must be the same and could be used for all games supporting S-RAM.
But one of games that I tested showed different results from my thought.
What I tested are Dragon Slayer6, YS2 and XAK2. S-RAM of FM-PAC could be used for all of those games but that of PAC could not be used for Dragon Slayer 6.
Are S-RAM of FM-PAC and PAC different? And does anyone have lists of games supporting S-RAM of only FM-PAC or PAC?

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Van BiFi

Enlighted (4348)

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03-09-2003, 18:38

My guess is Dragon Slayer 6 detects it differently, i.e. by reading some string from the ROM. PAC is just SRAM without ROM and therefore it can't be detected that way and FM-PAC does have ROM as well as SRAM.

There are also some games that require the PAC or FM-PAC in a particular slot to get the SRAM detected. That may also be the case for Dragon Slayer 6. I do know Xak - The Art of Visual Stage requires SRAM to be in slot 1.

Van st1mpy

Paladin (947)

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06-04-2023, 14:56

The Dragon Slayer 6 (the legend of heroes) 's box says if you use a fmpac you can save to sram, so I guess it is intended that saving to pac (the one without fm) is not supported, unless someone can confirm a way to make it work.
If the reason is, it is checking the fmpac rom then may be you can somehow make the rom of fmpac appear in the same slot as a pac to fool the game.

May be there are other games that only support fmpac and not pac saves.

Van max_iwamoto

Paladin (673)

afbeelding van max_iwamoto

06-04-2023, 17:29

st1mpy wrote:

The Dragon Slayer 6 (the legend of heroes) 's box says if you use a fmpac you can save to sram, so I guess it is intended that saving to pac (the one without fm) is not supported, unless someone can confirm a way to make it work.
If the reason is, it is checking the fmpac rom then may be you can somehow make the rom of fmpac appear in the same slot as a pac to fool the game.

May be there are other games that only support fmpac and not pac saves.

I would assume that game detects FMPAC for music and uses the same findings to use save to SRAM. If there is no FM MUSIC (FM PAC) - no save. So, for the game to be able to save to PAC we need to add an extra check for just SRAM and then PAC would work.

Van st1mpy

Paladin (947)

afbeelding van st1mpy

06-04-2023, 18:16

Oh just remembered this game also has a bug where it doesn't detect the Pac on msx machines with built in msx music. Or was the bug it doesn't detect the fm chip...