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mem.c

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#include "mem.h"
#include <memory.h>
#include <windows.h>

#include <stdio.h>

//#define DEBUG

#ifdef DEBUG
#define POCET 1000000
typedef struct { BOOL read; UINT adr; unsigned char data; } item;
item DArr[POCET];
FILE* fil;
int volatile uk = 0;
#endif

unsigned char memory[MEMSIZE + 4];      
pIOFunc memio[IOHI - IOLO + 1];

CRITICAL_SECTION CSMemory;

unsigned char memgetb(UINT adr)
{
        unsigned char bget;
        EnterCriticalSection(&CSMemory);
#ifdef DEBUG
        if (uk>POCET) {
                int i;
                fil = fopen("out.txt", "a");
                for (i = 0; i<= POCET; i++) {
                        if (DArr[i].read == TRUE) {
                                fprintf(fil, "cti(%04x) = %02x\n", DArr[i].adr, DArr[i].data);
                        } else {
                                fprintf(fil, "nastav(%04x)<---%02x\n", DArr[i].adr, DArr[i].data);
                        }
                        fflush(fil);
                }
                uk = 0;
                fflush(fil);
                fclose(fil);
        }
        if (adr < 0xA000 || adr >= 0xD000){// fprintf(fil, "cti(%x)=", adr);
        DArr[uk].adr = adr;
        DArr[uk].read = TRUE;
        }
#endif
        if (adr < IOLO || adr > IOHI || memio[adr - IOLO] == NULL) {
                bget = memory[adr];
        }
        else {
                (memio[adr - IOLO])(adr, &bget, IOREAD);
        }
#ifdef DEBUG
        if (adr < 0xA000 || adr >= 0xD000){// fprintf(fil, "%x\n", bget);
        DArr[uk].data = bget;
        uk++;
        }
#endif
        LeaveCriticalSection(&CSMemory);
        return bget;
}

void memsetb(UINT adr, unsigned char bset)
{
        EnterCriticalSection(&CSMemory);
#ifdef DEBUG
        if (adr < 0xA000 || adr >= 0xD000){// fprintf(fil, "nastav(%x)<--", adr);
        DArr[uk].adr = adr;
        DArr[uk].read = FALSE;
        }
#endif
        if (adr < IOLO || adr > IOHI || memio[adr - IOLO] == NULL) {
                memory[adr] = bset;
        }
        else {
                (memio[adr - IOLO])(adr, &bset, IOWRITE);
        }
#ifdef DEBUG
        if (adr < 0xA000 || adr >= 0xD000){// fprintf(fil, "%x\n", bset);
        DArr[uk].data = bset;
        uk++;
        }
#endif
        LeaveCriticalSection(&CSMemory);
}

void InitMem()
{
        UINT i;
#ifdef DEBUG
        //fil = fopen("out.txt", "w");
#endif
        for (i = 0; i <= IOHI - IOLO; i++) {
                memio[i] = NULL;
        }
        InitializeCriticalSection(&CSMemory);
}

void SetIOFunc(pIOFunc piof, UINT loadr, UINT hiadr)
{
        UINT i;
        for (i = loadr - IOLO; i <= hiadr - IOLO; i++) {
                memio[i] = piof;
        }
}

void SetMemory(char *buf)
{
        memcpy(memory, buf, MEMSIZE);
}

#ifdef DEBUG
void printmsg(char* msg)
{
        fprintf(fil, "%s", msg);
}
#endif

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