Translated C# version to C

src/keyboard.c

@@ -0,0 +1,28 @@
+#include <stdint.h>
+#include <SFML/Window.h>
+
+extern uint8_t systemRegister;
+
+static uint8_t keyboardResult;
+
+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(const sfKeyCode key){
+	keyboardResult = 0;
+	
+	for (int i = 0; i < 8; i++) {
+		if (key == scanMatrix[i + (((systemRegister & 0x07) % 6) * 8)]){
+			keyboardResult |= (0x80 >> i);
+		}
+	}
+	
+	keyboardResult ^= 0xFF;
+}