making bootloader to load the dos kernel to run a shell

assets/bootsec_source.js

@@ -0,0 +1,17 @@
+// load TVDOS.SYS
+let p = _BIOS.FIRST_BOOTABLE_PORT;
+com.sendMessage(p[0], 'OPENR"tvdos/TVDOS.SYS",'+p[1]);
+let r = com.getStatusCode(p[0]);
+if (r == 0){
+    com.sendMessage(p[0], "READ");
+    r = com.getStatusCode([0]);
+    if (r == 0) {
+        let g=com.pullMessage(p[0]);
+        eval(g);
+        0;
+    }
+    else
+        println("I/O Error");
+}
+else
+    println("TVDOS.SYS not found");