> disassembled the bios and it looks like it I have to put &H0A or &H0B on
> i/o-port &HAB to make it high or low. But it didn't give any voltage,
> when measured. Does anyone know how to do this?
I'm now a bit busy, but I'll ansfer shortly...
For writing CAS port, you have to use PPI port C, bit 5 (bit 4 = motor
on/off) You can acces this bit by using mode register (&HAB) as you
described before or directly by using I/O port &hAA.
Reading from cassette is done trough PSG register 14 or 15, but I don't
remember that part very well anymore, since I use MSX tR. :-)
Anyway good information about this should be found from PORTAR.DOC file,
that you can found from ftp.funet.fi
That manual gives quite a lot of information about using MSX directly
trough I/O ports, but don't trust all of information, that is there. Some
of information is wrong and most is missing. Anyway if I remember correct,
then this part should be Ok and quite a good explained.
,_____.
_=_=_=_=!_MSX_!=_=_=_=_=_=_=_=_,
! A1ST ~--- - I ( o o o o o o )i
/--------------------------------`,
/ .::::::::::::::::::::::;::; ::::.,
/ :::.:.:.:::____________:::::!. -=- `,
~======================================
NYYRIKKI : [EMAIL PROTECTED]
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