/****************************************************************************** Product: DOS console-based BSP, Turbo C++ 1.01* Last Updated for Version: 4.0.00* Date of the Last Update:  Apr 07, 2008**                    Q u a n t u m     L e a P s*                    ---------------------------*                    innovating embedded systems** Copyright (C) 2002-2008 Quantum Leaps, LLC. All rights reserved.** This software may be distributed and modified under the terms of the GNU* General Public License version 2 (GPL) as published by the Free Software* Foundation and appearing in the file GPL.TXT included in the packaging of* this file. Please note that GPL Section 2[b] requires that all works based* on this software must also be made publicly available under the terms of* the GPL ("Copyleft").** Alternatively, this software may be distributed and modified under the* terms of Quantum Leaps commercial licenses, which expressly supersede* the GPL and are specifically designed for licensees interested in* retaining the proprietary status of their code.** Contact information:* Quantum Leaps Web site:  http://www.quantum-leaps.com* e-mail:                  info@quantum-leaps.com*****************************************************************************/#include "qp_port.h"#include "bsp.h"#include <conio.h>#include <stdlib.h>#include <stdio.h>/* Local-scope objects -----------------------------------------------------*/static void interrupt (*l_dosTmrISR)();static void interrupt (*l_dosSpareISR)();#define TMR_VECTOR      0x08#define SPARE_VECTOR    0x81/*..........................................................................*/static void interrupt tmrISR() {    QF_INT_UNLOCK(dummy);                             /* unlock interrupts */    QF_tick();                              /*<-- process the QF clock tick */    QF_INT_LOCK(dummy);                           /* lock interrupts again */    geninterrupt(SPARE_VECTOR);     /* invoke the DOS timer ISR, see NOTE01 */}/*..........................................................................*/void BSP_init(int argc, char *argv[]) {    (void)argc;        /* avoid the compiler warning about unused parameter */    (void)argv;        /* avoid the compiler warning about unused parameter */}/*..........................................................................*/void QF_onStartup(void) {                                      /* save the origingal DOS vectors ... */    l_dosTmrISR   = getvect(TMR_VECTOR);    l_dosSpareISR = getvect(SPARE_VECTOR);    QF_INT_LOCK(dummy);    setvect(TMR_VECTOR, &tmrISR);    setvect(SPARE_VECTOR, l_dosTmrISR);    QF_INT_UNLOCK(dummy);}/*..........................................................................*/void QF_onCleanup(void) {                                    /* restore the original DOS vectors ... */    QF_INT_LOCK(dummy);    setvect(TMR_VECTOR, l_dosTmrISR);    setvect(SPARE_VECTOR, l_dosSpareISR);    QF_INT_UNLOCK(dummy);    _exit(0);                                                /* exit to DOS */}/*..........................................................................*/void QF_onIdle(void) {              /* NOTE: entered with interrupts LOCKED */    QF_INT_UNLOCK(dummy);                /* must at least unlock interrupts */    if (kbhit()) {        BSP_onConsoleInput((uint8_t)getch());    }}/*..........................................................................*/void Q_onAssert(char const Q_ROM * const Q_ROM_VAR file, int line) {    fprintf(stderr, "Assertion failed in %s, line %d", file, line);    QF_stop();}/****************************************************************************** NOTE01:* The sofware interrupt generated at the end of the tick ISR invokes the* original DOS tick ISR handler, which was installed at the spare vector* 0x81. The DOS tick ISR handler generates the EOI (End-Of-Interrupt)* to the master 8259A PIC.*/