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