/* external variables and definitions */

#define STND 1		/* flag for non-test board for functions */
#define TEST 0		/* flag for test board for functions */
#define SBASE 0x60	/* address of non-test board */
#define TBASE 0x48	/* address of test board */
#define SCLK SBASE+2	/* non-test clk address for all functions */
#define TCLK TBASE+2	/* test clk address for all funct. */
#define TIMRD  0x0c	/* command to read time into the shift reg. */
#define TIMST  0x08	/* command to store time into the clk. */
#define SHIFT  0x04	/* command to ready shift reg. before clocking bit */
#define HOLD  0x00	/* command to hold all comm. with clk. reg. */
#define TP64 0x10	/* command to put out 64 int/sec
			 * (gets clk. out of 'test' mode) */
#define CONIN 1		/* cp/m function number for console input */
#define CONSTAT 11	/* cp/m function number for console status */
#define CONOUT 2	/* cp/m function number for console output */
#define BUFSZ 90	/* maximum buffer size */

FIO	stdout;

/* external definitions */

int base;		/* lowest port # for most functions */
int group;		/* group #  */
int functs;		/* upper 6 bits of group select port */
int wrdsze;		/* word size ( 5, 6, 7, 8, ) */
char stopsze;		/* stop bit lenth ( 'l', 's') */
char parity;		/* parity enable bit ( 'y', 'n' ) */
char eoparty;		/* even or odd parity ( 'e', 'o' ) */
char dtr;		/* data terminal ready ( 'y', 'n' ) */
char rts;		/* request to send ( 'y', 'n' ) */
char threint;		/* trans. holding reg. interrupt */
char drint;		/* data ready interrupt */
char rlint;		/* receive line interrupt */
char modint;		/* modem interrupt */
char buff[BUFSZ];	/* buffer for output to terminal */
int baud;		/* baud rate */
int abaud[];		/* array of most common baud rates */

int dbaud[];		/* holds the divisor for the baud rate */
			/* in an array that matches the array */
			/* above for baud rates */


			/* has the addr of the function */
int (*error)();		/* that failed , cannot point to a
			 * function that needs parameters */
 
int erflg;		/* 0 if not in error loop, 1 if it is */
int verflg;		/* 1 if not verbose,0 if verbose */
int main();		/* for nonfatal errors */

int int0(),int1(),int2(),int3(),int4(),int5(),int6(),int7();

char inted;		/* 1 if int occured */
char intnum;		/* interrupt number left here after int occurs */
char level;		/* level or edge triggered */
char addint;		/* address interval */
char single;		/* single or multiple */
char icw4;		/* icw4 needed */
char fulnst;		/* fully nested mode */
char buffed;		/* buffered or sp/en mode */
char ms;		/* master/slave */
char aeoi;		/* automatic end of interrupt */

unsigned char jtable[128];	/* jump table */
unsigned char *addr;		/* 32 byte boundry address */