Add 6502 TYA instruction

src/6502.c

@@ -5,6 +5,10 @@ void txa(FILE *outfile) {
   fwrite(TXA, 1, 1, outfile);
 }
 
+void tya(FILE *outfile) {
+  fwrite(TYA, 1, 1, outfile);
+}
+
 void inx(FILE *outfile) {
   fwrite(INX, 1, 1, outfile);
 }

src/6502.h

@@ -14,6 +14,7 @@
 #define NOP "\xEA"
 
 void txa(FILE *outfile);
+void tya(FILE *outfile);
 
 void inx(FILE *outfile);
 void iny(FILE *outfile);

src/main.c

@@ -41,6 +41,8 @@ void parser(char lexed_buf[512][128][128], FILE *outfile) { // outfile is needed
 			  iny(outfile);
 			} else if (!strcmp(lexed_buf[i][j], "TXA")) {
 			  txa(outfile);
+			} else if (!strcmp(lexed_buf[i][j], "TYA")) {
+			  tya(outfile);
 			} else {
 			  printf("Unrecognized command: %s\n", lexed_buf[i][j]);
 			  break;

tests/test.asm

@@ -1,3 +1,9 @@
 NOP
 INX
+INX
 INY
+TXA
+INY
+INY
+INY
+TYA

tests/test.bin

@@ -1 +1 @@
-киИ
+кииИЉИИИ<EFBFBD>