MPU401 Basic Extensions

This is a program for the C64 that will extend basic to support controlling a mpu401 unit via a MIF-C64 cartridge adapter.

Build

make will build mpu401.prg and mpu401.d64 in the build directory.

Extended Basic Commands

• mpu <command>
  Send a command to the MPU unit.
  example: mpu 63: REM put the mpu into UART mode
• mpu in <numeric variable>
  Read incoming midi byte into a variable. A value of 244 means no data in queue.
  example: mpu in MV: REM Read next midi in value into variable MV
• midi voice on <note>,<channel>,<velocity>
  Send midi noteon command
  example: midi voice on 60,2,70: REM Turn on middle C on channel 2 with velocity of 70
• midi voice off <note>,<channel>,<velocity>
  Send midi noteoff command
  example: midi voice off 60,2,70: REM Turn off middle C on channel 2 with velocity of 70
• midi program <program>,<channel>
  Send midi program change command
  example: midi program 43,2: REM Change program on channel 2 to patch number 43
• midi ctrl <control>,<channel>,<value>
  Send midi control change command
  example: midi ctrl 34,2,87: REM Change value of control 34 on channel 2 to 87
  
• midi pitch <pitch>,<channel>
  Send midi pitch bend change command
  example: midi pitch 8448,2: REM Change pitch bend for channel 2 to 8448