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- /*
- * Include file for IBM PC comm.c routines
- */
-
- /* Defines */
-
- #ifndef NULL
- #define NULL 0
- #endif
-
- #ifndef TRUE
- #define FALSE 0
- #define TRUE ~FALSE
- #endif
-
- typedef unsigned char uchar;
- typedef unsigned int uint;
-
- #define CBS 16384 /* RS-232 input buffer size (a guess) */
-
- #define COM1 1 /* port number parameters for comm_open() */
- #define COM2 2
-
- #define MDMDAT1 0x03F8 /* Address of modem port 1 data */
- #define MDMSTS1 0x03FD /* Address of modem port 1 status */
- #define MDMCOM1 0x03FB /* Address of modem port 1 command */
- #define MDMDAT2 0x02F8 /* Address of modem port 2 data */
- #define MDMSTS2 0x02FD /* Address of modem port 2 status */
- #define MDMCOM2 0x02FB /* Address of modem port 2 command */
- #define MDMINTV 0x000C /* Com 1 interrupt vector */
- #define MDINTV2 0x000B /* Com 2 interrupt vector */
-
- #define MDMINTO 0x0EF /* Mask to enable IRQ3 for port 1 */
- #define MDMINTC 0x010 /* Mask to Disable IRQ4 for port 1 */
-
- #define MDINTC2 0x008 /* Mask to Disable IRQ3 for port 2 */
- #define MDINTO2 0x0F7 /* Mask to enable IRQ4 for port 2 */
-
- #define INTCONT 0x0021 /* 8259 interrupt controller ICW2-3 */
- #define INTCON1 0x0020 /* Address of 8259 ICW1 */
-
- #define XOFF 0x13 /* XON/XOFF */
- #define XON 0x11
-
- /* Function Prototypes */
-
- static void dobaud(uint);
- void comm_close(void), comm_flush(void), comm_putc(uchar);
- int comm_open(int, uint), comm_avail(void), comm_getc(void);
- int dread(uchar *, int, int);