M-Audio MM-401 User manual

MM-401™
MPU-401 Compatible MIDI Interface for the IBM PC and
Compatibles
45 E. Saint Joseph St. • Arcadia, CA 91006
Tel: [phone] • FAX: [phone] • Tech: 626 445 8495 •
Http://www.midiman.net • [email protected]

FCC COMPLI NCE
The MM-401 complies with Part 15 of the FCC rules. Operation
is subject to the followin conditions:
(1) This device may not cause harmful interference.
(2) This device must accept any interference received,
includin interference that may cause undesired opera-
tion.
The MM-401 FCC identification is: IMJMM-401
RE D THIS! ... RE D THIS! ....
Included with MM-401 is a factory diskette containin dia nos-
tic software, a number of helpful DOS MIDI utility pro rams,
and Windows help files for several major sequencers.
To install these pro rams, put the diskette in your drive and type:
INSTALL (Return)
Do this before puttin your MM-401 in your computer. The
install pro ram will automatically uide you throu h an instal-
lation procedure for your computer and the MM-401.

Package Contents
The MM-401 packa e consists of the interface card, a MIDI
In/Out adaptor cable, and a dia nostics and utilities disk.
Features
The MM-401 has the followin features:
• 1/3 card len th — 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, includin PC/AT/386/486’s.
• Can be reset via a computer hardware reset.
• Accepts MIDI Time Code data in intelli ent 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 appli-
cation 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 usin
the MM-401 with Windows, check to make sure Windows has

loaded the Roland MPU-401 driver. This can be done by openin
the *Control Panel* icon in the *Main* Group and clickin on the
*Drivers* icon. For further information on settin up drivers
under Windows, see the *Windows* section.
If you are usin a DOS sequencer that uses drivers, your pro ram
will include MPU-401 compatible drivers. Make sure the MPU-
401 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 manu-
facturer of your software and ask them how to install an MPU
compatible driver. This topic may also be covered in your appli-
cations instruction manual.
Interrupt/IRQ and ddress Selection
It is vital to make sure the “interrupt/IRQ” and “address” set-
tin s are correctly set on the card. The default settin s 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 settin s, your MM-401 may not work proper-
ly.
The MM-401 has ei ht dip-switches which allow the
interrupt/IRQ and addresses to be selected. The settin s 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 pro ram includ-
ed on the diskette to determine which interrupt/IRQ and
addresses are free. You may then select one of these settin s for
your interrupt/IRQ and also your address.

IMPORTANT: When usin a DOS pro ram, you need to make
sure that the interrupt/IRQ and address selected on your MM-
401 are also selected within your pro ram. 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 pro ram’s manual or call your pro ram’s manufacturer.
Some older software may not allow you to chan e the interrupt
and will only work on interrupt 2. If this is the case you may
need to chan e the interrupt of conflictin 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 ri ht side. The switches are
numbered from ri ht to left. Dependin on when your card was
manufactured the switches may have “OPEN/CLOSED” label-
in instead of “OFF/ON.” If this is the case “OPEN” is equal to
“OFF” and “CLOSED” is equal to “ON.”

The followin table shows the possible address locations and cor-
respondin switch positions:
Switch:1 234Address Location
(Hex)
off off off off 200H
off off off ON 210H
off off ON off 220H
off off ON ON 230H
off ON off off 240H
off ON off ON 250H
off ON ON off 260H
off ON ON ON 270H
ON off off off 300H
ON off off ON 310H
ON off ON off 320H
ON off ON ON 330H (defa lt)
ON ON off off 340H
ON ON off ON 350H
ON ON ON off 360H
ON ON ON ON 370H

The followin table shows the possible interrupt numbers and
correspondin switch settin s:
Switch:5 678Interr pt N mber
ON off off off 2 (defa lt)
off ON off off 3
off off ON off 5
off off off ON 7
After settin the interrupt and address as described above, you
will now need to mechanically install the MM-401 into your com-
puter. Remember, if the card doesn’t work after installation you
may have to run the dia nostic pro ram and select a different
address or interrupt.

Mechanical Installation
To mechanically install the MM-401, do the followin :
1. Turn off your computer.
2. Remove the cover and position the computer so you have
easy access to the slots.
3. Select the slot you wish to place your MM-401 card in and
remove the metal bracket that covers the access hole on the
back of the computer.
4. Position the MM-401 card over the slot and fit the card loose-
ly into the slot with the MM-401 card upri ht. Then press the
card downward into the slot ently but firmly until the card
is seated in the slot. Make sure the card is firmly and square-
ly seated into the slot.
5. Screw the MM-401’s metal bracket into the screw hole inside
the back of your computer.
6. Place the cover back on your computer.
7. Connect the MM-401 MIDI In and MIDI Out cable assembly
to the connector on the MM-401 at the back of the computer.
Use the thumb screws on the cable assembly to attach it to
the connector.
8. If you wish to use the metronome, a cable with an RCA plu
may be plu ed into the jack above the MIDI cable assembly
connector. This cable must then be plu ed into an amplifi-
er.
9. Attach any MIDI devices you have by connectin your MIDI
cables to the MIDI In and MIDI Out cables of the MM-401.
10. Move your computer back to its ori inal position. You may
now turn on your computer.

Windows
The installation of the MM-401 is simplified by clickin on the
*Driver* icon found under the *Control Panel*. The *Control
Panel* can be found under the *Main* roup. In addition to
installin the Windows MIDI driver, you will also have to set up
your Windows MIDI applications so they select the installed
MPU-401 (many times your software will use a settin called
Multimedia Extensions as its Driver settin to access the MPU-
401 driver) for MIDI input and output.
First-Time Windows Driver Install
If there is no current MM-401 Windows MIDI driver installed on
your system, follow these steps to install MM-401 Windows driv-
er:
1. Start Windows as you usually do.
2. Click open the *Main* roup.
3. Click open the *Control Panel.*
4. Click on the *Drivers* icon.
5. Check for the Roland MPU-401 entry. If one exists, then the
driver has already been installed — click on cancel, and
close the *Control Panel*. You then can o directly to the last
step to set up your application.
If the MPU-401 driver is not present, please continue.
6. Click on the “add” button.
7. Select the “Unlisted or Updated Driver” entry and push the
“OK” button.

8. You will be prompted for a disk drive from which to read
the Windows 3.1 drivers. Insert the proper Windows disk
into your floppy disk drive, and, if necessary, enter the disk
drive specification in the prompt box. Click on OK.
9. When the “Add Unlisted or Updated Driver” Window pops
up, select the “Roland MPU-401” and click on OK.
10. The Roland MPU-401 driver setup dialo box will then
appear. It will allow you to set up the driver to match the
interrupt/IRQ and address settin s on your MM-401 card.
Some systems use MPU-401 address/port settin s other
than those available in the dialo box. You must then
chan e this manually by editin the “SYSTEM.INI” file in
your Windows root directory, and chan in the address/
port listed under the [MPU401,DRV] for your hardware.
Warning: Be careful when doin this. An incorrect settin
may result in your computer crashin or lockin up. If there
is any question about how to make these chan es, please
consult your computer’s user’s uide or manufacturer
directly.
11. Once you’ve selected the interrupt/IRQ and address/port,
click on OK.
12. In order for Windows to install the new driver completely,
you will be required to exit and restart Windows.
13. After restartin Windows, run your MIDI application(s). You
will need to set up each MIDI application in order to use the
MM-401 as the selected interface. From within the applica-
tion(s), select the MPU-401 as the current device. (The selec-
tion procedure will depend on the application.)

Trouble-Shooting
If you are havin problems usin your MM-401 it is probably a
ood idea to reread this manual and make sure you have prop-
erly installed the card. If you can’t find the source of your diffi-
culty check the followin typical fixes:
SYMPTOM: The computer won’t boot with the card in.
Everythin is fine without the card. (This may include stran e
error messa es.)
SOLUTION: Run the INSTALL pro ram and make sure the
interrupt/IRQ you have set the card to is free. Also, make sure
the card is reco nized at the address selected and that all of the
dia nostics pass.
SYMPTOM: The dia nostic pro ram finds the address that the
card is at, but says “No Interrupt Detected.”
SOLUTION: You are probably runnin Windows in your system.
Go ahead and quit Windows before runnin 401TEST.EXE. When
Windows is runnin , even in the back round, it steals the inter-
rupt/IRQ from the MM-401 (even if you run 401TEST.EXE from
the DOS Prompt). Try runnin the pro ram from DOS — it
should now work.
SYMPTOM: My computer can’t find the card when I run my
sequencer pro ram.
SOLUTION: Same as above.
SYMPTOM: The card works fine with my DOS pro rams but

isn’t workin with Windows.
SOLUTION: Make sure you have an MPU Windows driver
installed. This driver could be either the Roland MPU-401,
Roland LAPC1, or Twelve Tone Systems MIDI driver, or some
other MPU-401 compatible driver. If none of these drivers is
present you need to install any one of them. The Roland drivers
are supplied with the Windows software. Also make sure that the
address/port and interrupt/IRQ settin s match those set on the
MM-401.
SYMPTOM: The Windows MPU-401 driver is installed, but I’m
not ettin any sound when I run my sequencer.
SOLUTION: Your Windows application must select the MPU-401
(MM-401) as its MIDI Input and Output device. This is done from
within the application itself.
SYMPTOM: The card works fine with some of my pro rams but
doesn’t work with others.
SOLUTION: There’s probably a set-up problem with the pro-
ram that isn’t workin . It is likely you don’t have a driver
installed to talk MIDI to your computer. Check the set-up part of
your pro ram and make sure the appropriate MIDI driver is
installed. Next, make sure that the driver is also set to the
address/port and interrupt/IRQ that match the settin s on the
MM-401.
SYMPTOM: The card checks out fine with the Install/ 401TEST
pro ram but won’t run the software that comes with the card.
SOLUTION: Run the INSTALL pro ram and chan e the

address/port and interrupt/IRQ to match the settin s on the
MM-401.
SYMPTOM: My keyboard shows “MIDI Data Error,” or “MIDI
Buffer Full.”
SOLUTION: Check your MIDI cables and MIDI connections. Be
sure the cables are plu ed in all the way. If the problem persists
try new cables.
SYMPTOM: MIDI is bein sent and received properly but when
I play my sequencer it lu s and bo s down.
SOLUTION: First, make sure you don’t have a MIDI feedback
loop. A MIDI feedback loop can occur if the MIDI Out of the
interface card is somehow connected back to the MIDI In. This
can be avoided by turnin off the MIDI Thru on either your key-
board or in the application software.
If this is not the case your computer may be too old and slow to
handle the flow of data. Are you runnin on an old 4.77 Mhz
computer? If so, you may need to purchase a sequencer pro ram
that runs the MM-401 in Intelli ent mode to avoid this problem.
SYMPTOM: I’m a pro rammer and want to pro ram for the card.
Do you have any information or drivers for the card?
SOLUTION:Driver software for the card has been provided on
the factory diskette. Check the disk directories for information
on this. You can also contact MIDIMAN by mail, phone, or fax.

How to Change the Address and IRQ Settings
Recent updates to the MM-401 have necessitated
chan es in how the I/O address and IRQ are set. The
instructions on this pa e supercede the instructions in
the manual.
The MM-401 supports 4 different IRQs and 4 different
port address settin s. The two left jumpers on the card
control the port address settin . The MM-401 comes set
to port address 330 and IRQ 5. This should work with
most systems and is the most common settin for MPU-
401 compatible cards. However, if your system
includes a SoundBlaster or compatible soundcard, it
will enerally have the same default settin s for its
MIDI/Joystick port. In this case, you will have to
chan e the IRQ and Port Address on your MM-401
usin the chart below. “In” means that both pins are
covered by the plastic jumper. “Out” means that the
pins are uncovered or that the jumper is only coverin
one of the two pins. The address pins on the MM-401
are labeled 20 and 10. The IRQ pins are labeled 3, 5, 7
and 2. The factory defaults of address 330 and IRQ 5 are
shown on next pa e.

Lifetime Limited Warranty
MIDIMAN warrants that this product is free of defects in materials and
workmanship under normal use so lon as the product is owned by the
ori inal purchaser and that purchaser has re istered his/her ownership
of the product by sendin in the completed warranty card.
In the event that MIDIMAN receives written notice of defects in materi-
als or workmanship from such an ori inal purchaser, MIDIMAN will
either replace the product, repair the product, or refund the purchase
price at its option. Shipment to and/or from MIDIMAN shall be at the
expense of the purchaser. Such equipment should be in a protective
packa e with a description of the problem.
The remedy for breach of this limited warranty shall not include any
other dama es. MIDIMAN will not be liable for consequential, special,
indirect, or similar dama es or claims includin loss of profit or any
other commercial dama e, even if its a ents have been advised of the
possibility of such dama es, and in no event will MIDIMAN’s liability
for any dama es to the purchaser or any other person exceed the price
paid for the product, re ardless of any form of the claim.
MIDIMAN specifically disclaims all other warranties, expressed or
implied. Specifically, MIDIMAN makes no warranty that the product is
fit for any particular purpose.
This warranty shall be construed, interpreted, and overned by the laws
of the state of California. If any provision of this warranty is found void,
invalid or unenforceable, it will not affect the validity of the balance of
the warranty, which shall remain valid and enforceable accordin to its
terms. In the event any remedy hereunder is determined to have failed
of its essential purpose, all limitations of liability and exclusion of dam-

a es set forth herein shall remain in full force and effect.
If you have any questions, comments, or su estions about the
MM-401 or any MIDIMAN product, we invite you to contact us
directly at:
MIDIMAN
45 E. Saint Joseph St.
Arcadia, CA 91066
Or call us at:
Technical Assistance: (626)-445-8495
FAX: [phone]
http:/www.midiman.net [email protected]
45 E. Saint Joseph St. • Arcadia, CA 91006
Tel: [phone] • FAX: [phone] • Tech: 626 445 8495 •
Http:/www.midiman.net • [email protected]