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