AxibugEmuOnline/References/VirtuaNESex_src_191105/NES/NND.cpp
2024-08-05 17:58:53 +08:00

140 lines
3.0 KiB
C++

/******************************************************************************/
/* Nes Cart Dumper */
/* tpu<tpunix@126.com> */
/* last : 2006.11.14 */
/* first: 2003.05.05 */
/******************************************************************************/
#include <windows.h>
#include <stdio.h>
#include <stdlib.h>
#include <conio.h>
#include "mmu.h"
#include "nnd.h"
#define inb(a) _inp((unsigned short)a)
#define outb(a, d) _outp((unsigned short)a, (unsigned short)d)
int InstallGiveIo(void)
{
HANDLE h;
OSVERSIONINFO osvi;
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
if(osvi.dwPlatformId == VER_PLATFORM_WIN32_NT){ //OS=NT/2000
h = CreateFile("\\\\.\\giveio", GENERIC_READ, 0, NULL,
OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
CloseHandle(h);
if(h == INVALID_HANDLE_VALUE)
return 0;
else
return 0x2000;
}else{
return 0x0098; //OS=WIN98
}
}
void set_paddr(int addr)
{
outb(0x37b, 0);
outb(0x37c, addr&0xff);
outb(0x37b, 1);
outb(0x37c, (addr>>8));
}
void set_vaddr(int addr)
{
int data;
data = (~addr)&0x2000;
data <<= 1;
addr &= 0x3fff;
addr |= data;
outb(0x37b, 4);
outb(0x37c, addr&0xff);
outb(0x37b, 5);
outb(0x37c, addr>>8);
}
void vwrite(int addr, int data)
{
set_vaddr(addr);
outb(0x37b, 6);
outb(0x37c, data);
}
int vread(int addr)
{
int data;
set_vaddr(addr);
outb(0x37b, 6);
data = inb(0x37c);
return data;
}
int ppread(int addr)
{
int data;
if(addr<0x4000) return vread(addr);
set_paddr(addr);
outb(0x37b, 2);
data = inb(0x37c);
return data;
}
void ppwrite(int addr, int data)
{
if(addr<0x4000){
vwrite(addr, data);
return;
}
set_paddr(addr);
outb(0x37b, 2);
outb(0x37c, data);
}
void bus_reset(void)
{
int data;
//Reset
data = inb(0x37a);
data &= 0xfb;
outb(0x37a, data);
data = 0xc4;
outb(0x37a, data);
outb(0x37b, 8);
outb(0x37c, 0); //auto sync on
// outb(0x37c, 1); //auto sync off
set_vaddr(0x3fff);
}
void main(void)
{
BYTE filebuf_Prom[64*1024];
BYTE filebuf_Vrom[16*1024];
int retv, i;
retv = InstallGiveIo();
if(retv==0){
printf("Please install gaveio.sys first!\n");
}
bus_reset();
for(i=0x8000; i<0x10000; i++) filebuf_Prom[i-0x8000] = ppread(i);
CPU_MEM_BANK[4] = filebuf_Prom;
CPU_MEM_BANK[5] = filebuf_Prom + 0x2000;
CPU_MEM_BANK[6] = filebuf_Prom + 0x4000;
CPU_MEM_BANK[7] = filebuf_Prom + 0x6000;
for(i=0x0000; i<0x2000; i++) filebuf_Vrom[i] = ppread(i);
PPU_MEM_BANK[0] = filebuf_Vrom;
PPU_MEM_BANK[1] = filebuf_Vrom + 0x0400;
PPU_MEM_BANK[2] = filebuf_Vrom + 0x0800;
PPU_MEM_BANK[3] = filebuf_Vrom + 0x0c00;
PPU_MEM_BANK[4] = filebuf_Vrom + 0x1000;
PPU_MEM_BANK[5] = filebuf_Vrom + 0x1400;
PPU_MEM_BANK[6] = filebuf_Vrom + 0x1800;
PPU_MEM_BANK[7] = filebuf_Vrom + 0x1c00;
}