TITLE:      Advanced Gravis Tech Note #16
AREA:       MIDI
DATE:       January 28, 1993
KEY WORDS:  GUS MIDI CABLE CONNECTOR INTERFACE

SUBJECT: How to build a MIDI cable that will work with the GUS

The Gravis MIDI connector box will not be available until April '93.
In the mean time you have two options if you want an immediate solution.

First, you may purchase a Sound Blaster MIDI Cable from Creative Labs,
NOT their MIDI connector box.  Then make the following modification to
the cable:

  1) Change the 6N136 IC in the cable (inside the end that plugs into the 
     sound card) to a 6N138
  2) Add a 5.6K resistor (GRN BLU RED) between pins 6 & 8 and another
     one between 5 & 7 on the 6N138 (easier if you put them on the 
     underside of the circuit board).

Your second choice is to purchase a MIDI cable from MediaVision that
does not require any modifications.  You may contact them at:

                          MediaVision
                          47221 Fremont Blvd.
                          Fremont, CA, USA
                          94538-9742

For information on how to build your own Sound Blaster MIDI cable,
please refer to MIDDIA.ZIP, which you may find on the Gravis Support BBS.

NOTE: Running SBOS V1.22 or earlier then pressing a key or sending ANY
      MIDI data WILL crash your system!!  This problem is being worked
      on. (CURRENT PRIORITY: LOW-MID)