v6502cpp/v6502.cpp
2013-12-13 10:01:38 -05:00

95 lines
2.3 KiB
C++

#include <algorithm>
#include <utility>
#include <iterator>
#include <vector>
#include <set>
#include <map>
#include <stdlib.h>
#include <iostream>
#include <iomanip>
#include <fstream>
#include "addressbus.h"
#include "cpu.h"
#include "Cpu6502.h"
#include "TransNetwork.h"
#include "Trace.h"
//memory[0xFF] = 0x68; // PLA
//memory[0xFF] = 0xFF;
//memory[0xFFFF] = 0xFE;
//memory[0xFEFE] = 0xFD;
//memory[0xFDFD] = 0xFC;
//memory[0xFCFC] = 0xFB;
//memory[0xFBFB] = 0xFA;
//memory[0xFAFA] = 0xF9;
//void pZP() {
// int a = 0;
// for (int i = 0; i < 16; ++i) {
// pHexw(a);
// std::cout << ": ";
// for (int j = 0; j < 16; ++j) {
// pHex(memory[a++]);
// std::cout << " ";
// }
// std::cout << std::endl;
// }
//}
int main(int argc, char *argv[]) {
std::ifstream if_trans("transistors");
if (!if_trans.is_open()) {
std::cerr << "error opening file: transistors" << std::endl;
exit(EXIT_FAILURE);
}
TransNetwork tn(if_trans);
AddressBus mem;
Trace trace(tn.segs);
Cpu6502 cpu(tn,mem,trace);
/* Load some test program into memory */
mem.write(0x0200, 0xEA); // NOP
mem.write(0x0201, 0xEA); // NOP
mem.write(0x0202, 0xA9); // LDA #$5A
mem.write(0x0203, 0x5A); //
mem.write(0x0204, 0x85); // STA $88
mem.write(0x0205, 0x88); //
mem.write(0x0206, 0xA9); // LDA #$23
mem.write(0x0207, 0x23); //
mem.write(0x0208, 0xD0); // BNE $0200
mem.write(0x0209, 0xF6); //
mem.write(0xFFFC, 0x02); // RESET --> $0202
mem.write(0xFFFD, 0x02);
/* turn on the CPU */
std::cout << "----------------------------------------" << std::endl;
std::cout << "begin power-up..." << std::endl;
cpu.powerOn();
std::cout << "end power-up..." << std::endl;
std::cout << "----------------------------------------" << std::endl;
/* run it a bit, before resetting */
std::cout << "some power-up pre-reset cycles..." << std::endl;
for (int i(0); i < 10; ++i) {
cpu.tick();
}
std::cout << "----------------------------------------" << std::endl;
/* reset the CPU, and let it run for a little while, then exit */
std::cout << "RESET..." << std::endl;
cpu.reset();
for (int i(0); i < 50; ++i) {
cpu.tick();
}
return EXIT_SUCCESS;
}