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Provides support for the MPU401 connector on your soundcard.

DEVICE=C:\Os2\Boot\Mpu401.sys

Parameter:

The commercial Theta Band Software MPU-401 audio device driver provides MIDI playback and recording support. It supports both MMPM/2 and RTMIDI. That package is a replacement for the MPU-401 driver from IBM and Crystal Semiconductor. It provides a complete feature superset over these two drivers. I only know the parameters of that device driver : :li. /Pn:hhh

base I/O address

• /In:ddd

  Interrupt Level
  Specifies the IRQ level for the given port. The IRQ level must be between 1 and 15 . This parameter also specifies the IRQ-less MIDI recording option. To select IRQ-less recording, set the IRQ level to 0 and the TIMER0 will be used for recording.

• /N:sss

  Device Driver Name
  A string, up to 7 characters in length and terminated by a $ (for a maximum of 8 characters including the $). If you install more than one copy of MPU401.SYS, each one must have a different name.

• /R:ddd

  TIMER0 resolution
  If the highres timer ( Timer0.sys ) is installed, this parameter tells the MPU-401 driver what resolution to use (where yyy is the number of milliseconds) when playing MMPM/2 MIDI streams. Default is 2 milliseconds.

• /V

  Verbose (Verbose output during boot)

• /O:sss

  Options

  • LONGNAME

    Long name support.
    If specified, /L directs the driver to include the base I/O address and the IRQ in the instance name for RTMIDI Type A registration.

  • QUIETINIT

    Ignore Initialization Errors
    Tells the driver to ignore errors when an OS/2 MMPM/2 application wants to play a MIDI file. This option may be necessary for some audio adapters.

  • NORMIO

    Do not check/register I/O addresses with RM
    Tells the driver not to check or claim I/O address with the Resource Manager.

  • SHAREDIO

    Check/register I/O addresses as shared
    Tells that driver to use the Shared attribute when checking and claiming I/O addresses with the Resource Manager.

  • MULTIIO

    Check/register I/O addresses as multiplexed
    Tells that driver to use the multiplexed attribute when checking and claiming I/O addresses with the Resource Manager. Frequently used when the MPU-401 driver shares the same hardware with another driver, such as SB16D2.SYS.

  • NORMIRQ

    Do not check/register IRQ's with RM
    Tells the driver not to check or claim IRQ's with the Resource Manager.

  • SHAREDIRQ

    Check/register IRQ's as shared
    Tells that driver to use the Shared attribute when checking and claiming IRQ's with the Resource Manager.

  • MULTIIRQ

    Check/register IRQ's as multiplexed
    Tells that driver to use the multiplexed attribute when checking and claiming IRQ's with the Resource Manager.

  • NOCHECKIO

    Do not verify I/O addresses
    Tells the driver not to verify whether an MPU-401 device exists at the I/O addresses specified by the /P switches. Use this option when the sound card is initialized after the driver is loaded, e.g. by a DOS application. When this option is specified, the NOCHECKIRQ option is implied. If you want the MPU-401 driver to also ignore the hardware when an application requests it, specify the /O:QUIETINIT option.

  • NOCHECKIRQ

    Do not verify IRQ's
    Same as the NOCHECKIO option, except it applies to the IRQ level.

  • NOTIMER0

    Do not use TIMER0 even it is available.

  • 10BITS

    Use 10-bit addresses width with RM
    Always register each I/O address as having only 10 significant bits. If this option is selected, no I/O address can be greater than 0x3FF.

  • 16BITS

    Use 16-bit addresses width with RM
    Always register each I/O address as having the full 16 significant bits.

  • ONLYONE

    Locate only one MPU-401 device
    Ignored unless I/O port autodetection is used. When specified, the autodetection routine stops after finding the 1st MPU-401 device.

Platform Support:

OS/2 2.x	OS/2 3.0	OS/2 4.0
Yes	Yes	Yes