Anand,
Which MIDI interface are you using? What are you using for a driver?
(OMS, FreeMIDI, Apple MIDI Tools)? What application are you using?
Does this application have its own proprietary driver (like Finale)?
Are you plugged into the modem port? Do you have a modem or another serial
device that forces you to swap? Does AppleTalk NEED to be on for some
reason?
Many questions, but, generally:
* yes, MIDI is a serial hog, and for good reason.. the MIDIinterface is
handling an intense external clock translation, allowing the
humongously face CPU speed to be subservient to the sloggingly
slow (but marvelously efficient) MIDI code speed of 31+k
* if you are using some sort of port expander, plug your modem, printer
etc. into the expander and dedicate one of the hard serial ports
to the MIDI device, then leave it alone(!)
* if you can, direct AppleTalk to the ethernet port, and DON'T let OMS
(if using that) turn it off when prompted; tell OMS to mind its
own business! ;-) (you can turn off the OMS query in the "preferences"
panel)
* Give your computer a good zap of the PRAM, turn off AppleTalk (and
Filesharing), rechoose your printer (in printer port?) and try printing.
You may also have to trash the MIDI driver's preferences and rebuild
your setup to reset IT.
Reach me off (or on..) list for more questions,
Best regards,
Dana
> From: Anand <[EMAIL PROTECTED]>
> Reply-To: "G-List" <[EMAIL PROTECTED]>
> Date: Tue, 07 Oct 2003 10:26:11 -0700
> To: "G-List" <[EMAIL PROTECTED]>
> Subject: MIDI and printer on printer port
>
> Hi Everybody,
>
> On my Son's system (Beige G4 466 MHz OS 9.2.2) he has a MIDI
> keyboard for piano instruction and a HP 855c which gets switched back
> and forth in the printer port. Unfortunately it is really unstable.
> Right now I have not been able to get the printer to work for a week.
> Neither the piano keyboard nor the printer want Appletalk on but for the
> MIDI to work I also have the switch where Appletalk goes through so that
> it would go through a different port, like ethernet. Then the MIDI
> works but when I switch it back the printer does not work anymore.=(
> I read in Mac Help that in OS 9 sometimes the ports have difficulty
> switching and it advised a reboot. Did it. Did not work. When I try
> to print I keep getting the message,"Status of:"Compose, MIDI and
> printer in printer port":serial port is already open or in use." So, it
> appears that the cpu thinks that MIDI is still going through the printer
> port. I do not know why it would. Is there anything else I can do to
> get the printer working? Oh, the 855c needs apatch for )S 9 but I did
> that aready.
>
> I just found out that midi devices frequently hog the serial
> ports. I've been told there are apps. that help. "Serial Killer",
> Serial Setter" amd "CommCloser" are all supposed to work but I have not
> been able to find any of them to download. Know where?
>
> Thanks,
> Anand
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