Buchla 700 BIOS (trap13) Calls
------------------------------

	int
	BIOS(B_RDAV, unit)
	int unit;

	int
	BIOS(B_GETC, unit)
	int unit;

	BIOS(B_PUTC, unit, c)
	int unit, c;

	long
	BIOS(B_RDWR, rwflag, buf, count, recno, dev)
	int rwflag;
	char *buf;
	int count, recno, dev;

	long
	BIOS(B_SETV, vecnum, vecadr)
	int vecnum;
	long vecadr;

	struct bpb *
	BIOS(B_GBPB, dev)
	int dev;

	long
	BIOS(B_THRE, unit)
	int unit;

	long
	BIOS(B_MCHG, dev)
	int dev;

	long
	BIOS(B_DMAP)

Logical Units
-------------

	PRT_DEV		0	Serial-1
	AUX_DEV		1	Serial-2
	CON_DEV		2	Serial-2
	MC1_DEV		3	MIDI-1
	MC2_DEV		4	MIDI-2

rwflag values for B_RDWR

	0 = read, 1 = write, check media for change
	2 = read, 3 = write, no media change check

Buchla 700 XBIOS (trap14) Calls
-------------------------------

	struct iorec *
	XBIOS(X_PIOREC, unit)
	int unit;

	XBIOS(X_SETPRT, unit, mode, baud, cfr0, cfr1)
	int unit, mode, baud, cfr0, cfr1;

	int
	XBIOS(X_FLOPRD, buf, filler, dev, sector, track, side, count)
	char *buf;
	long filler;
	int dev, sector, track, side, count;

	int
	XBIOS(X_FLOPWR, buf, filler, dev, sector, track, side, count)
	char *buf;
	long filler;
	int dev, sector, track, side, count;

	int
	XBIOS(X_FORMAT, buf, filler, dev, spt, track, side, intrlv, magic, virgin)
	char *buf;
	long filler;
	int dev, spt, track, side, intrlv, virgin;
	long magic;		/* must be 0x87654321 */

	int
	XBIOS(X_VERIFY, buf, filler, dev, sector, track, side, count)
	int buf[512];
	long filler;
	int dev, sector, track, side, count;

	int
	XBIOS(X_PRBOOT, buf, serial, type, execflag)
	char *buf;
	long serial;
	int type, execflag;

	long
	XBIOS(X_RANDOM)

type values for X_PRBOOT

	0 = 40 tracks, single sided		1 = 40 tracks, double sided
	2 = 80 tracks, single sided		3 = 80 tracks, double sided