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.
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 READ THIS! ... READ THIS! ....
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.
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.
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.
The following table shows the possible address locations and corresponding switch positions: Switch: (Hex) 1 2 3 4 Address Location off off off off off off off off ON ON ON ON ON ON ON ON off off off off ON ON ON ON off off off off ON ON ON ON off off ON ON off off ON ON off off ON ON off off ON ON off ON off ON off ON off ON off ON off ON off ON off ON 200H 210H 220H 230H 240H 250H 260H 270H 300H 310H 320H 330H 340H 350H 360H 370H (default)
The following table shows the possible interrupt numbers and corresponding switch settings: Switch: 5 ON off off off 6 off ON off off 7 off off ON off 8 off off off ON Interrupt Number 2 (default) 3 5 7 After setting the interrupt and address as described above, you will now need to mechanically install the MM-401 into your computer. Remember, if the card doesn’t work after installation you may have to run the diagnostic program and select a different address or interrupt.
Mechanical Installation To mechanically install the MM-401, do the following: 1. 2. Turn off your computer. 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 loosely into the slot with the MM-401 card upright.
Windows The installation of the MM-401 is simplified by clicking on the *Driver* icon found under the *Control Panel*. The *Control Panel* can be found under the *Main* group. In addition to installing 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 setting called Multimedia Extensions as its Driver setting to access the MPU401 driver) for MIDI input and output.
8. 9. 10. 11. 12. 13. 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. When the “Add Unlisted or Updated Driver” Window pops up, select the “Roland MPU-401” and click on OK. The Roland MPU-401 driver setup dialog box will then appear.
Trouble-Shooting If you are having problems using your MM-401 it is probably a good idea to reread this manual and make sure you have properly installed the card. If you can’t find the source of your difficulty check the following typical fixes: SYMPTOM: The computer won’t boot with the card in. Everything is fine without the card. (This may include strange error messages.) SOLUTION: Run the INSTALL program and make sure the interrupt/IRQ you have set the card to is free.
isn’t working 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 settings match those set on the MM-401.
address/port and interrupt/IRQ to match the settings 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 plugged in all the way. If the problem persists try new cables. SYMPTOM: MIDI is being sent and received properly but when I play my sequencer it lugs and bogs down. SOLUTION: First, make sure you don’t have a MIDI feedback loop.
How to Change the Address and IRQ Settings Recent updates to the MM-401 have necessitated changes in how the I/O address and IRQ are set. The instructions on this page supercede the instructions in the manual. The MM-401 supports 4 different IRQs and 4 different port address settings. The two left jumpers on the card control the port address setting. The MM-401 comes set to port address 330 and IRQ 5. This should work with most systems and is the most common setting for MPU401 compatible cards.
Lifetime Limited Warranty MIDIMAN warrants that this product is free of defects in materials and workmanship under normal use so long as the product is owned by the original purchaser and that purchaser has registered his/her ownership of the product by sending in the completed warranty card.
ages set forth herein shall remain in full force and effect. If you have any questions, comments, or suggestions 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: FAX: http:/www.midiman.net (626)-445-8495 (626)-445-7564 techsupt@midiman.net 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.
