/*
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/*
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* Copyright (c) 1999 Greg Haerr <greg@censoft.com>
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* Copyright (c) 1999 Greg Haerr <greg@censoft.com>
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*
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*
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* Copyright (c) 2000 Victor Larionov, Victor Rogachev <rogach@sut.ru>
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* Copyright (c) 2000 Victor Larionov, Victor Rogachev <rogach@sut.ru>
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*
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*
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* Keyboard Driver, TURBO C version
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* Keyboard Driver, TURBO C version
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*/
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*/
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#include "device.h"
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#include "device.h"
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#include <bios.h>
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#include <bios.h>
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static int KBD_Open(KBDDEVICE *pkd);
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static int KBD_Open(KBDDEVICE *pkd);
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static void KBD_Close(void);
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static void KBD_Close(void);
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static void KBD_GetModifierInfo(int *modifiers);
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static void KBD_GetModifierInfo(int *modifiers);
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static int KBD_Read(MWUCHAR *buf, int *modifiers);
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static int KBD_Read(MWUCHAR *buf, int *modifiers);
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static int KBD_Poll(void);
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static int KBD_Poll(void);
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KBDDEVICE kbddev = {
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KBDDEVICE kbddev = {
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KBD_Open,
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KBD_Open,
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KBD_Close,
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KBD_Close,
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KBD_GetModifierInfo,
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KBD_GetModifierInfo,
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KBD_Read,
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KBD_Read,
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KBD_Poll
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KBD_Poll
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};
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};
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/*
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/*
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* Open the keyboard.
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* Open the keyboard.
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*/
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*/
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static int
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static int
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KBD_Open(KBDDEVICE *pkd)
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KBD_Open(KBDDEVICE *pkd)
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{
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{
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return 1;
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return 1;
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}
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}
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/*
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/*
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* Close the keyboard.
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* Close the keyboard.
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*/
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*/
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static void
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static void
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KBD_Close(void)
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KBD_Close(void)
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{
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{
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}
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}
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/*
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/*
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* Return the possible modifiers for the keyboard.
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* Return the possible modifiers for the keyboard.
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*/
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*/
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static void
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static void
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KBD_GetModifierInfo(int *modifiers)
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KBD_GetModifierInfo(int *modifiers)
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{
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{
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*modifiers = bioskey(2); /* no modifiers available */
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*modifiers = bioskey(2); /* no modifiers available */
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}
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}
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/*
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/*
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* This reads one keystroke from the keyboard, and the current state of
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* This reads one keystroke from the keyboard, and the current state of
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* the mode keys (ALT, SHIFT, CTRL). Returns -1 on error, 0 if no data
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* the mode keys (ALT, SHIFT, CTRL). Returns -1 on error, 0 if no data
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* is ready, and 1 if data was read. This is a non-blocking call.
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* is ready, and 1 if data was read. This is a non-blocking call.
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*/
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*/
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static int
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static int
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KBD_Read(MWUCHAR *buf, int *modifiers)
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KBD_Read(MWUCHAR *buf, int *modifiers)
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{
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{
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/* wait until a char is ready*/
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/* wait until a char is ready*/
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if(!bioskey(1))
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if(!bioskey(1))
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return 0;
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return 0;
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/* read keyboard shift status*/
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/* read keyboard shift status*/
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*modifiers = bioskey(2);
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*modifiers = bioskey(2);
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/* read keyboard character*/
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/* read keyboard character*/
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*buf = bioskey(0);
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*buf = bioskey(0);
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if(*buf == 0x1b) /* special case ESC*/
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if(*buf == 0x1b) /* special case ESC*/
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return -2;
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return -2;
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return 1;
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return 1;
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}
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}
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static int
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static int
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KBD_Poll(void)
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KBD_Poll(void)
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{
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{
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if (bioskey(1)!=0)
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if (bioskey(1)!=0)
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return 1;
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return 1;
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else
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else
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return 0;
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return 0;
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}
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}
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