75 lines
1.6 KiB
C
75 lines
1.6 KiB
C
|
/* w89k-io.c -- I/O code for the Winbond Cougar board.
|
||
|
|
*
|
||
|
|
* Copyright (c) 1995 Cygnus Support
|
||
|
|
*
|
||
|
|
* The authors hereby grant permission to use, copy, modify, distribute,
|
||
|
|
* and license this software and its documentation for any purpose, provided
|
||
|
|
* that existing copyright notices are retained in all copies and that this
|
||
|
|
* notice is included verbatim in any distributions. No written agreement,
|
||
|
|
* license, or royalty fee is required for any of the authorized uses.
|
||
|
|
* Modifications to this software may be copyrighted by their authors
|
||
|
|
* and need not follow the licensing terms described here, provided that
|
||
|
|
* the new terms are clearly indicated on the first page of each file where
|
||
|
|
* they apply.
|
||
|
|
*/
|
||
|
|
#include "w89k.h"
|
||
|
|
|
||
|
|
void zylons();
|
||
|
|
void led_putnum();
|
||
|
|
void delay();
|
||
|
|
|
||
|
|
/*
|
||
|
|
* outbyte -- shove a byte out the serial port. We wait till the byte
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
outbyte (byte)
|
||
|
|
unsigned char byte;
|
||
|
|
{
|
||
|
|
while ((inp(COM1_LSR) & TRANSMIT) == 0x0) ;
|
||
|
|
|
||
|
|
outp (COM1_DATA, byte);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* inbyte -- get a byte from the serial port
|
||
|
|
*/
|
||
|
|
unsigned char
|
||
|
|
inbyte ()
|
||
|
|
{
|
||
|
|
while ((inp(COM1_LSR) & RECEIVE) == 0x0) ;
|
||
|
|
|
||
|
|
return (inp(COM1_DATA));
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* led_putnum -- print a hex number on the LED. the value of num must be a byte.
|
||
|
|
* The max number 15, since the front panel only has 4 LEDs.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
led_putnum ( num )
|
||
|
|
char num;
|
||
|
|
{
|
||
|
|
print ("Sorry, no LED's on the WinBond W89k board, using putnum instead\r\n");
|
||
|
|
putnum (num);
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* zylons -- draw a rotating pattern. NOTE: this function never returns.
|
||
|
|
*/
|
||
|
|
void
|
||
|
|
zylons()
|
||
|
|
{
|
||
|
|
print ("Sorry, no LED's on the WinBond W89k board\r\n");
|
||
|
|
}
|
||
|
|
|
||
|
|
void
|
||
|
|
delay (x)
|
||
|
|
int x;
|
||
|
|
{
|
||
|
|
int y = 17;
|
||
|
|
while (x-- !=0)
|
||
|
|
y = y^2;
|
||
|
|
}
|