Bosconian (unoffical) (19xx)(Doujin - Sth-Mai) - Sound Board II not detected

[wwark]

The issue is printed on the screen:

Thanks

[yosinda]

This software appears to be the type that reads the version number of the BASIC ROM and statically selects the port on which Sound Board 2 will be placed.

In the current implementation, Sound Board 2 is connected to an IO port on the on-board sound card.
This follows Puu-san's implementation.

If boot.rom is a PC-8801mk2SR ROM, this software searches for an IO port of the expansion slot, so it cannot find Sound board 2.

This problem can be solved by implementing an on-board sound board (OPN) + expansion sound board 2 (OPNA), just like the actual PC-8801mk2 SR.
However, in this case, the ROM of the model equipped with on-board sound board 2 cannot be used as boot.rom.

What would be the best way to fix this...

[wwark]

Thank you for your quick response and the detail of this issue.

If we use extra boot.rom's.... (like PSX core boot1.rom, boot2.rom, and boot3.rom used depending on the region) and load different ones depending switch in OSD, could help the way to fix this issue ?

👍

[yosinda]

Thank you for your comments and suggestions.

For now, I'm thinking of a way to select in the OSD which port the Sound Board 2 is connected to.
(Onboard or Expansion slot)

Because, some software only supports Onboard or Expansion board without determining the model.
In that case, it is useful to be able to change the connection destination using the OSD.

[wwark]

It is working great ! Thanks ^^

I will prepare a section on the readme for this new option on the OSD.
By the way with this version I can load again games with a MiSTer and SDRAM 2.5