At 06:38 PM 7/27/99 +0200, you wrote:
>1. What happens if a 1 is written to adress #7FF6 in the MSX-MUSIC ROM???
It makes the OPLL connected to that slot listen to I/O over the standard
MSX-MUSIC ports.
This allows more than one MSX-MUSIC to be present in an MSX without
conflicts. Having two MSX-MUSICs play the same music would probably not
sound nice (small differences in output would create a really weird effect).
Not all MSX-MUSIC hardware sticks to this scheme. The original FM-PAC does.
The FM-PAK and the Korean PACs don't, as far as I know. I think the turbo R
does, because it's made by Panasonic just like the FM-PAC.
Note that the MSX-MUSIC can also be controlled through memory mapped I/O.
In this way, you can play different sounds on 2 MSX-MUSICs in one MSX, just
like you can play on 2 SCCs. Sean Young figured this out when doing
research for Virtual MSX.
>2. Please check out the subroutine in the attached .ASC-file... It
>initializes some kind of device but I really have NO idea which one. If
>somebody could explain me I'd be grateful.
I didn't find an attachement...
>3. About the Kanji-ROM, I'd like to have more info about it, because my I
>can't find any in my current documentation.
Look at Takamichi's page:
http://www.bekkoame.ne.jp/i/takatemp/gtinter.htm
>I have put the 32kB ROM on my
>harddisk and it is a normal ROM with "AB" in the first two bytes and a
>Basic-expansion adress set.
I guess the 32K ROM is only the interface, the Kanji ROM itself is probably
a lot larger.
Bye,
Maarten
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