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#include <cstdlib>
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#include <iostream>
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#include <wchar.h>
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#include <locale.h>
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#include <cstring>
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using namespace std;
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typedef uint16_t address_t;
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typedef uint8_t command_t;
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const address_t MEMORY_SIZE = 1024;
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const command_t CMD_GOTO = 100;
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const command_t CMD_SLEEP = 101;
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const command_t CMD_END = 102;
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/**
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* Reads the command on given position in memory and increments the index (position).
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*/
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command_t readCommand(command_t * memory, address_t &index) {
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// TODO: map higher memory to static hardcoded areas or peripherals
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command_t * value = reinterpret_cast<command_t*> (memory + index);
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index += sizeof (*value);
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return *value;
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}
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address_t readAddress(command_t * memory, address_t &index) {
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address_t * value = reinterpret_cast<address_t*> (memory + index);
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index += sizeof (*value);
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return *value;
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}
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void writeMemoryChar(command_t(&memory)[MEMORY_SIZE], address_t &index, const int value) {
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memory[index] = value;
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}
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void writeCommand(command_t * memory, address_t &index, const command_t value) {
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// command_t * m = (command_t*) (memory + index);
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command_t * m = reinterpret_cast<command_t*> (memory + index);
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*m = value;
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index += sizeof (value);
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}
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int main(int argc, char* argv[]) {
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setlocale(LC_ALL, "");
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command_t * memory = (command_t*) malloc(MEMORY_SIZE);
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{
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address_t a = 0;
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writeCommand(memory, a, CMD_SLEEP);
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writeCommand(memory, a, CMD_SLEEP);
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writeCommand(memory, a, CMD_SLEEP);
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writeCommand(memory, a, CMD_GOTO);
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writeCommand(memory, a, 8);
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writeCommand(memory, a, 0);
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writeCommand(memory, a, 1);
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writeCommand(memory, a, 1);
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writeCommand(memory, a, CMD_SLEEP);
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writeCommand(memory, a, CMD_END);
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}
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for (address_t i = 0; i < MEMORY_SIZE;) {
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wprintf(L"command %d = ", i);
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command_t ch = readCommand(memory, i);
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wprintf(L"%d\n", ch);
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string command;
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switch (ch) {
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case CMD_GOTO:
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i = readAddress(memory, i);
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command.append("GOTO ");
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break;
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case CMD_SLEEP:
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command.append("SLEEP");
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break;
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case CMD_END:
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command.append("END");
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i = MEMORY_SIZE;
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break;
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}
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if (!command.empty()) {
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wprintf(L"\t%s\n", command.c_str());
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}
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}
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wprintf(L"all done\n");
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return 0;
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}
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