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#include "apple.h"
#include "video/interface.h"
#include <unistd.h>
#include "cpu/6502.h"
#include "string.h"
#define HelpPrintout "\
Usage: apple-c [ options ]\n\
An Apple-I emulator written in C.\n\
\n\
Options:\n\
-m, --memory [NUM] Set RAM memory size to NUM pages; one page is 1024 bytes.\n\
Value must be between 4-64. 4 is the default.\n\
-t, --terminal Use ncurses (terminal) display mode. Default mode.\n\
-g, --graphical Use SDL (graphical) display mode.\n\
-i, --information Turn information overlay (default off).\n\
-l, --logging Toggle logging of computer state every cycle (default off).\n\
"
int main(int argc, char* argv[]) {
int print_info = 0;
int logging = 0;
int memory = 4;
//
// ARGUMENT PARSING
//
for (int i = 1; i < argc; i++) {
// Help
if (!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
// Print help and terminate straight away.
printf(HelpPrintout);
exit(0);
}
// Memory
if (!strcmp(argv[i], "-m") || !strcmp(argv[i], "--memory")) {
// Increment i, and check bounds.
if (++i >= argc) {
printf("Memory argument not set.\n");
exit(1);
}
// If able, get next argument, and set memory to it.
else {
memory = strtol(argv[i], NULL, 10);
if ((4 > memory) || (memory > 64)) {
printf("Invalid value for setting memory.\n");
exit(1);
}
}
goto SkipIteration;
}
// Display
if (!strcmp(argv[i], "-t") || !strcmp(argv[i], "--terminal")) {
SetDisplayMode(0);
goto SkipIteration;
}
if (!strcmp(argv[i], "-g") || !strcmp(argv[i], "--graphical")) {
SetDisplayMode(1);
goto SkipIteration;
}
// Logging
if (!strcmp(argv[i], "-l") || !strcmp(argv[i], "--information")) {
logging = 1;
goto SkipIteration;
}
// Information Display
if (!strcmp(argv[i], "-i") || !strcmp(argv[i], "--information")) {
print_info = 1;
goto SkipIteration;
}
printf("Unrecognized arguments.\n");
exit(1);
SkipIteration:
}
//
// EMULATION
//
AppleOn(memory);
DisplayInit();
FILE *Log;
if (logging) {
Log = fopen("log/log.raw", "w+");
}
int Time = 0;
while(1) {
// Computing
CallInstructionTable();
// Logging
if (logging) {
if (Time >= 0x2000)
// Stop logging after an arbitrary amount of time, so as to not create a huge file.
fclose(Log);
else {
fprintf(Log,
"%04x : %04x : %02x : %02x : %02x : %c%c_%c%c%c%c%c : %02x\n",
Time, PC, acc, X, Y,
GetFlag(flag_N) ? 'N':'.' ,
GetFlag(flag_V) ? 'V':'.' ,
GetFlag(flag_B) ? 'B':'.' ,
GetFlag(flag_D) ? 'D':'.' ,
GetFlag(flag_I) ? 'I':'.' ,
GetFlag(flag_Z) ? 'Z':'.' ,
GetFlag(flag_C) ? 'C':'.' ,
S);
fflush(Log);
Time++;
}
}
// Display information
if (print_info) {
PrintInfo();
}
}
DisplayClose();
return 0;
}
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