LS7-Emulator/src/keyboard.c

#include <stdint.h>
#include <SFML/Window.h>

extern uint8_t systemRegister;
extern uint8_t keyboardResult;
extern sfKeyCode currentKey;

const static sfKeyCode scanMatrix[48] = {
    sfKeyNum1, 	sfKeyNum2, 		sfKeyNum3, 	sfKeyNum4, 	sfKeyNum5, 	sfKeyNum6, 	sfKeyNum7, 	sfKeyNum8,
    sfKeyQ, 	sfKeyW, 		sfKeyE, 	sfKeyR, 	sfKeyT, 	sfKeyY, 	sfKeyU, 	sfKeyI,
    sfKeyA, 	sfKeyS, 		sfKeyD, 	sfKeyF, 	sfKeyG, 	sfKeyH, 	sfKeyJ, 	sfKeyK,
    sfKeyZ, 	sfKeyX, 		sfKeyC, 	sfKeyV, 	sfKeyB, 	sfKeyN, 	sfKeyM, 	sfKeyComma,
    sfKeyNum9, 	sfKeyNum0,	 	sfKeyL, 	sfKeyO,	 	sfKeyP, 	sfKeyPeriod,sfKeyEnter,	sfKeyBackspace,
    sfKeyLShift,sfKeyLControl,	sfKeyLAlt, 	sfKeySpace, sfKeyUp, 	sfKeyRight, sfKeyDown, 	sfKeyLeft,
};


void scanKeyboard(){
    keyboardResult = 0;

    for (int i = 0; i < 8; i++) {
        if (currentKey == scanMatrix[i + (((systemRegister & 0x07) % 6) * 8)]){
            keyboardResult |= (0x80 >> i);
        }
    }

    keyboardResult ^= 0xFF;
}