Laurens Holst wrote:
> Well since the I/O ports are used and they both have mapped the same
> ones,
> they will probably both play the same
>(unless they are used through
> their
> BIOS, which however rarely happens, I think only in Basic).
How how how,
Explain this to me please.
I think you're wrong. You say yourself that they have the same I/O
ports. I/O are visible on all busses of the MSX system. The BIOS is a
Z80 ML prog like any other and it uses the I/O ports to talk to the
MSX-Music chip. So how can the BIOS make a difference between two chips
who listen to the same I/O port ????
> Because
> none of
> the ports can be read that will not cause problems. (if it would have
> been
> possible then it might have caused problems when it comes to timers
> etc).
Borg: <Irrelevant,even ACK signals during write could cause problems, if
the two chips would take a considerable different time in processing the
write(Which they don't since they are the same chip)>
David Heremans
--
.--.
|o_o |
|:_/ | "One difference between SuSE and Red Hat is that the
// \ \ former operates in a country where people don't sue
(| | ) each other over coffee being too hot."
/'\_ _/`\ Linus Torvalds
\___)=(___/
****
MSX Mailinglist. To unsubscribe, send an email to [EMAIL PROTECTED]
and put "unsubscribe msx [EMAIL PROTECTED]" (without the quotes) in
the body (not the subject) of the message.
Problems? contact [EMAIL PROTECTED]
More information on MSX can be found in the following places:
The MSX faq: http://www.faq.msxnet.org/
The MSX newsgroup: comp.sys.msx
The MSX IRC channel: #MSX on Undernet
****
