From: Jeffrey H. Ingber <>
Date: Tue Jan 7 20:49:01 2003

Just to clarify some items (ie. MT-32):

The three original PC interfaces from Roland are as follows:

MPU-IPC: 8-bit ISA card that connects to a beige, external breakout box
via. 25-pin D-sub connector. Has MIDI IN, OUT, and through as well as a
metronome conenctor.

MPU-IMC: Microchannel version of the above card.

LAPC-1: Full-length 8-bit ISA card containing both the MPU-IPC and
Roland MT-32. Has 15-pin D-sub connector for attachment of a similar
MIDI breakout box to those found on the MPU-IPC/IMC.

What can become confusing when trying to identify the breakout boxes is
that the LAPC-1 also offered a breakout box which looks similar to those
found on the first two interface cards. It connects using a DB-15
connector instead of the DB-25 connector of the MPU-IPC/IMC. They
breakout boxes on the LAPC-1 and MPU-IPC/IMC are *not* interchangeable.

An MPU-IPC/IMC and MT-32 setup is functionally equivilent to the LAPC-1
with a breakout box, although the breakout box is optional on the LAPC-1
(it is not needed to produce music since the MT-32 is integrated into
the card itself).


On Tue, 2003-01-07 at 20:40, No Junk Mail wrote:
> > >IIRC the MT-32 is a full length card. I'm fairly sure that back in
> > the
> > >day I picked one up. Can't remember how. The music from it was
> > superb,
> > >at least for the time -- probably still. I
> >
> > The MT-32 is a external box by Roland, really a fancy drum syth.
> > Since the
> > smarts were basically a chip, that chip found its way to sound cards.
> > Most
> > modern motherboards and sound cards still offer MPU-401 and MT-32
> > emulation, even oddly enough if midi itself isn't supported.
> My mistake. A quick Google shows that I had a LAPC-1 -- an MT32 on a card.
Received on Tue Jan 07 2003 - 20:49:01 GMT

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