source: buchla-68k/orig/lib/INCLUDE/M7MIDI.H

/*
   =============================================================================
        m7midi.h -- MIDI definitions for MIDAS on the Buchla 700
        Version 1 -- 1987-11-18 -- D.N. Lynx Crowe

        #define PT_DEFS in the module that gets the variables defined in it.
   =============================================================================
*/

/* group assignment table definitions */

#define RX_PORT         0       /* receiver input port 0..2 */
#define RX_CHAN         1       /* receiver base channel 0, 1..16 */
#define RX_MODE         2       /* receiver mode 0..3 */
#define RX_MVAL         3       /* receiver M value 0, 1..16 */
#define RX_MSMV         4       /* receiver MIDI state machine variable */

#define TX_PORT         5       /* transmitter output port 0..2 */
#define TX_CHAN         6       /* transmitter base channel 0, 1..16 */
#define TX_MODE         7       /* transmitter mode 0..3 */
#define TX_MVAL         8       /* transmitter M value 0, 1..16 */
#define TX_MSMV         9       /* transmitter MIDI state machine variable */

#define RT_SIZE         10      /* group assignment table width */

/* port setup table */

#define PT_ENBL         0       /* port enable flag */
#define PT_BASE         1       /* port master base channel (0 = off, 1..16) */
#define PT_PORT         2       /* port BIOS port number */
#define PT_GRPS         3       /* port group flags (bit no. = group no.) */

#define PT_SIZE         4       /* port setup table width */

#ifdef  PT_DEFS
char    grpasg[12][RT_SIZE];    /* group assignment data */
short   portasg[3][PT_SIZE];    /* port setup data */
#else
extern  char    grpasg[12][RT_SIZE];
extern  short   portasg[3][PT_SIZE];
#endif