added add_eb_gb and add_ev_gv instructions, fixed some stuff ig

main.cpp

@@ -4,14 +4,23 @@ void emulate() {
     while (1) {
         uint32_t addr = physical_addr(CS, IP);
         uint8_t opcode = ram[addr];
-        
+        instrHandler handler = instr_table[opcode];
+
         IP++;
+
+        if (handler) handler();
+        else {
+            std::cout << "unknown opcode " << std::hex << opcode << "\n";
+            break;
+        }
     }
 }
 
 int main(int argc, char* argv[]) {
     CS = 0x0000;
-    IP = 0x0100;
+    IP = 0x0000;
+    AX.value = 0x7fff;
+    BX.value = 0x7fff;
 
     if (argc < 2) {
         std::cerr << "usage: " << argv[0] << "<filename>\n";
@@ -23,6 +32,7 @@ int main(int argc, char* argv[]) {
         return 1;
     }
 
+    init_instr_table();
     emulate();
     return 0;
 }