M-AUDIO MM401 User Manual
MM-401
™
MPU-401 Compatible MIDI Interface for the IBM PC and
Compatibles
45 E. Saint Joseph St. • Arcadia, CA 91006
Tel: 626-445-2842 • FAX: 626-445-7564 • Tech: 626-445-8495 •
Http://www.midiman.net • techsupt@midiman.net
FCC COMPLIANCE
The MM-401 complies with Part 15 of the FCC rules. Operation
is subject to the following conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received,
including interference that may cause undesired operation.
The MM-401 FCC identification is:
IMJMM-401
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Included with MM-401 is a factory diskette containing diagnostic software, a number of helpful DOS MIDI utility programs,
and Windows help files for several major sequencers.
To install these programs, put the diskette in your drive and type:
INSTALL (Return)
Do this before putting your MM-401 in your computer. The
install program will automatically guide you through an installation procedure for your computer and the MM-401.
Package Contents
The MM-401 package consists of the interface card, a MIDI
In/Out adaptor cable, and a diagnostics and utilities disk.
Features
The MM-401 has the following features:
• 1/3 card length — fits in either 8 or 16 bit ISA slots.
• One MIDI In and one MIDI Out jack.
• Switch selectable address and interrupt/IRQ locations.
• External click metronome output.
• Runs on any PC at any speed, including PC/AT/386/486’s.
• Can be reset via a computer hardware reset.
• Accepts MIDI Time Code data in intelligent mode.
• Built-in internal timer in UART mode.
Drivers
Some MIDI applications make use of drivers. You will have to
make sure that the correct MIDI driver is installed in your application for the MM-401 to work with it.
Windows uses the Roland MPU-401 driver provided on the
Microsoft Windows diskettes. If you encounter problems using
the MM-401 with Windows, check to make sure Windows has
loaded the Roland MPU-401 driver. This can be done by opening
the *Control Panel* icon in the *Main* Group and clicking on the
*Drivers* icon. For further information on setting up drivers
under Windows, see the *Windows* section.
If you are using a DOS sequencer that uses drivers, your program
will include MPU-401 compatible drivers. Make sure the MPU401 driver is properly installed. Generally, the MPU-401 driver is
installed as the default driver. If you have any questions about
which driver to use or how to install the driver, call the manufacturer of your software and ask them how to install an MPU
compatible driver. This topic may also be covered in your applications instruction manual.
Interrupt/IRQ and Address Selection
It is vital to make sure the “interrupt/IRQ” and “address” settings are correctly set on the card. The default settings for the
MM-401 (and all MPU-401 compatible cards) are *address 330*
and *interrupt/IRQ 2*. If another adaptor card in your system
already uses these settings, your MM-401 may not work properly.
The MM-401 has eight dip-switches which allow the
interrupt/IRQ and addresses to be selected. The settings for
these switches have to be set so they don’t conflict with any other
cards in your computer. If you install your MM-401 and it does
not work correctly, you can use the installation program included on the diskette to determine which interrupt/IRQ and
addresses are free. You may then select one of these settings for
your interrupt/IRQ and also your address.
IMPORTANT: When using a DOS program, you need to make
sure that the interrupt/IRQ and address selected on your MM401 are also selected within your program. For example, if your
MM-401 is set to interrupt/IRQ 2 and address 330, you have to
make sure your sequencer is also set to interrupt/IRQ 2 and
address 330. To find out how to do this, you will need to look at
your program’s manual or call your program’s manufacturer.
Some older software may not allow you to change the interrupt
and will only work on interrupt 2. If this is the case you may
need to change the interrupt of conflicting devices instead of the
interrupt of the MM-401.
The dip-switches used to set the address and interrupt on the
MM-401 are located on the lower left hand side of the card as you
view it with the metal bracket on the right side. The switches are
numbered from right to left. Depending on when your card was
manufactured the switches may have “OPEN/CLOSED” labeling instead of “OFF/ON.” If this is the case “OPEN” is equal to
“OFF” and “CLOSED” is equal to “ON.”
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