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Apple_II_Keyboard.ino
Normal file
299
Apple_II_Keyboard.ino
Normal file
@ -0,0 +1,299 @@
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#define IIKEYB_D0 4
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#define IIKEYB_D1 5
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#define IIKEYB_D2 6
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#define IIKEYB_D3 7
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#define IIKEYB_D4 8
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#define IIKEYB_D5 9
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#define IIKEYB_D6 10
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#define IIKEYB_RESET 11
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#define IIKEYB_STRB 12
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void setupIO()
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{
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pinMode(IIKEYB_D0, OUTPUT);
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pinMode(IIKEYB_D1, OUTPUT);
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pinMode(IIKEYB_D2, OUTPUT);
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pinMode(IIKEYB_D3, OUTPUT);
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pinMode(IIKEYB_D4, OUTPUT);
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pinMode(IIKEYB_D5, OUTPUT);
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pinMode(IIKEYB_D6, OUTPUT);
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pinMode(IIKEYB_RESET, INPUT_PULLUP);
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pinMode(IIKEYB_STRB, OUTPUT);
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digitalWrite(IIKEYB_D0, LOW);
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digitalWrite(IIKEYB_D1, LOW);
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digitalWrite(IIKEYB_D2, LOW);
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digitalWrite(IIKEYB_D3, LOW);
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digitalWrite(IIKEYB_D4, LOW);
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digitalWrite(IIKEYB_D5, LOW);
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digitalWrite(IIKEYB_D6, LOW);
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digitalWrite(IIKEYB_RESET, HIGH);
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digitalWrite(IIKEYB_STRB, HIGH);
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}
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void II_Reset(void)
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{
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pinMode(IIKEYB_RESET, OUTPUT);
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pinMode(IIKEYB_RESET, LOW);
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delay(10);
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pinMode(IIKEYB_RESET, INPUT_PULLUP);
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digitalWrite(IIKEYB_RESET, HIGH);
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}
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int II_putchar(int bOutput)
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{
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if (10 == bOutput)
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bOutput = '\r';
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if (0x0D == bOutput)
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bOutput = '\r';
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if (bOutput & 0b00000001)
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digitalWrite(IIKEYB_D0, HIGH);
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else
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digitalWrite(IIKEYB_D0, LOW);
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if (bOutput & 0b00000010)
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digitalWrite(IIKEYB_D1, HIGH);
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else
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digitalWrite(IIKEYB_D1, LOW);
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if (bOutput & 0b00000100)
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digitalWrite(IIKEYB_D2, HIGH);
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else
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digitalWrite(IIKEYB_D2, LOW);
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if (bOutput & 0b00001000)
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digitalWrite(IIKEYB_D3, HIGH);
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else
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digitalWrite(IIKEYB_D3, LOW);
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if (bOutput & 0b00010000)
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digitalWrite(IIKEYB_D4, HIGH);
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else
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digitalWrite(IIKEYB_D4, LOW);
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if (bOutput & 0b00100000)
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digitalWrite(IIKEYB_D5, HIGH);
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else
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digitalWrite(IIKEYB_D5, LOW);
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if (bOutput & 0b01000000)
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digitalWrite(IIKEYB_D6, HIGH);
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else
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digitalWrite(IIKEYB_D6, LOW);
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pinMode(IIKEYB_STRB, HIGH);
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delay(1);
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pinMode(IIKEYB_STRB, LOW);
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delay(10);
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return (bOutput);
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}
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int II_puts(const char *string)
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{
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int i = 0;
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while (string[i]) //standard c idiom for looping through a null-terminated string
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{
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if ( II_putchar(string[i]) == EOF) //if we got the EOF value from writing the char
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{
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return EOF;
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}
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i++;
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}
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if (II_putchar('\r') == EOF) //this will occur right after we quit due to the null terminated character.
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{
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return EOF;
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}
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return 1; //to meet spec.
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}
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char *convert(unsigned int num, int base)
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{
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static char Representation[] = "0123456789ABCDEF";
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static char buffer[50];
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char *ptr;
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ptr = &buffer[49];
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*ptr = '\0';
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do
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{
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*--ptr = Representation[num % base];
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num /= base;
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} while (num != 0);
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return (ptr);
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}
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void II_printf(char* format, ...)
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{
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char *traverse;
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unsigned int i;
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char *s;
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//Module 1: Initializing Myprintf's arguments
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va_list arg;
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va_start(arg, format);
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for (traverse = format; *traverse != '\0'; traverse++)
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{
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while ( *traverse != '%' )
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{
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II_putchar(*traverse);
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traverse++;
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}
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traverse++;
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//Module 2: Fetching and executing arguments
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switch (*traverse)
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{
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case 'c' : i = va_arg(arg, int); //Fetch char argument
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II_putchar(i);
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break;
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case 'd' : i = va_arg(arg, int); //Fetch Decimal/Integer argument
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if (i < 0)
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{
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i = -i;
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II_putchar('-');
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}
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II_puts(convert(i, 10));
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break;
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case 'o': i = va_arg(arg, unsigned int); //Fetch Octal representation
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II_puts(convert(i, 8));
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break;
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case 's': s = va_arg(arg, char *); //Fetch string
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II_puts(s);
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break;
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case 'x': i = va_arg(arg, unsigned int); //Fetch Hexadecimal representation
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II_puts(convert(i, 16));
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break;
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}
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}
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//Module 3: Closing argument list to necessary clean-up
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va_end(arg);
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}
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void setup()
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{
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Serial.begin(115200);
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setupIO();
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Serial.println("Apple II Keyboard started");
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II_puts(" ");
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while (Serial.available() == 0) {}
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//II_monitor();
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}
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char* monitorcode[40];
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void II_monitor(void)
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{
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II_puts("call -151");
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delay(500);
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monitorcode[0] = "0: 00 0A 00 40 00 00 00 00";
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monitorcode[1] = "8: 00 00 00 00 00 00 00 00";
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monitorcode[2] = "800: A9 00 85 07 A9 00 A8 AA";
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monitorcode[3] = "808: 85 06 A5 00 85 04 A5 01";
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monitorcode[4] = "810: 85 05 C0 04 D0 04 A5 04";
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monitorcode[5] = "818: 85 06 C0 05 D0 04 A5 05";
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monitorcode[6] = "820: 85 06 A5 06 81 04 A1 04";
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monitorcode[7] = "828: C5 06 D0 2E E6 04 D0 02";
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monitorcode[8] = "830: E6 05 A5 02 C5 04 D0 04";
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monitorcode[9] = "838: A5 03 C5 05 D0 D4 A5 00";
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monitorcode[10] = "840: 85 04 A5 01 85 05 C0 04";
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monitorcode[11] = "848: D0 04 A5 04 85 06 C0 05";
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monitorcode[12] = "850: D0 04 A5 05 85 06 A1 04";
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monitorcode[13] = "858: C5 06 D0 69 E6 04 D0 02";
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monitorcode[14] = "860: E6 05 A5 02 C5 04 D0 04";
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monitorcode[15] = "868: A5 03 C5 05 D0 D8 C0 00";
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monitorcode[16] = "870: D0 08 A9 FF 85 06 C8 4C";
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monitorcode[17] = "878: 0A 08 C0 01 D0 04 A9 01";
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monitorcode[18] = "880: D0 F2 C0 02 D0 08 06 06";
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monitorcode[19] = "888: 90 ED A9 7F D0 E6 C0 03";
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monitorcode[20] = "890: D0 08 38 66 06 B0 E0 C8";
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monitorcode[21] = "898: D0 DD C0 04 F0 F9 A9 50";
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monitorcode[22] = "8A0: 20 EC 08 A9 41 20 EC 08";
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monitorcode[23] = "8A8: A9 53 20 EC 08 A9 53 20";
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monitorcode[24] = "8B0: EC 08 20 1E 09 E6 07 A5";
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monitorcode[25] = "8B8: 07 20 F2 08 20 13 09 EA";
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monitorcode[26] = "8C0: EA EA 4C 04 08 48 98 20";
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monitorcode[27] = "8C8: F2 08 20 1E 09 A5 05 20";
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monitorcode[28] = "8D0: F2 08 A5 04 20 F2 08 20";
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monitorcode[29] = "8D8: 1E 09 A5 06 20 F2 08 20";
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monitorcode[30] = "8E0: 1E 09 68 20 F2 08 20 13";
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monitorcode[31] = "8E8: 09 00 EA EA 09 80 20 F0";
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monitorcode[32] = "8F0: FD 60 48 4A 4A 4A 4A 29";
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monitorcode[33] = "8F8: 0F 09 30 C9 3A 90 02 69";
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monitorcode[34] = "900: 06 20 EC 08 68 29 0F 09";
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monitorcode[35] = "908: 30 C9 3A 90 02 69 06 20";
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monitorcode[36] = "910: EC 08 60 A9 0D 20 EC 08";
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monitorcode[37] = "918: A9 0A 20 EC 08 60 A9 20";
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monitorcode[38] = "920: 20 EC 08 60";
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//monitorcode[39] = "0: 00 E0 00 F0"; //Setup E000 to EFFF
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monitorcode[39] = "0: 00 40 00 40"; //Setup 4000 to 7FFF
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for (int i = 0; i < 40; i++)
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{
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II_puts(monitorcode[i]);
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delay(50);
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}
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}
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void loop()
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{
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int incomingByte = 0;
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int II_Byte = 0;
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while (Serial.available() == 0) {}
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incomingByte = Serial.read();
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II_Byte = incomingByte;
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if (10 == incomingByte)
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II_Byte = '\r';
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if (0x0D == incomingByte)
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II_Byte = '\r';
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if (28 == incomingByte)
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II_Byte = 0x08;
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if (29 == incomingByte)
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II_Byte = 0x15;
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#if 0
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Serial.print("Received Value: 0x");
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Serial.print(incomingByte, HEX);
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Serial.print(" Wich shows as '");
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Serial.write(incomingByte);
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Serial.print("'. Sent as: 0x");
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Serial.print(II_Byte, HEX);
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Serial.println("' to Apple II");
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#endif
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Serial.write(II_Byte);
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II_putchar(II_Byte);
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}
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