rom arg

src/main.zig

@@ -1,9 +1,20 @@
 const std = @import("std");
 
 pub fn main() !void {
-    // var gpa = std.heap.GeneralPurposeAllocator(.{}){};
-    // defer _ = gpa.deinit();
-    // const allocator = gpa.allocator();
+    var gpa = std.heap.GeneralPurposeAllocator(.{}){};
+    defer _ = gpa.deinit();
+    const allocator = gpa.allocator();
+
+    var args = try std.process.argsWithAllocator(allocator);
+    defer args.deinit();
+    _ = args.next();
+    const rom_path = args.next();
+
+    if (rom_path) |path| {
+        var file = try std.fs.cwd().openFile(path, .{});
+        defer file.close();
+        const rom = try file.readToEndAlloc(allocator, 0xFFFF);
+        defer allocator.free(rom);
 
         const mem: [0xFFFF]u8 = undefined;
         const ws: [0xFF]u8 = undefined;
@@ -14,8 +25,10 @@ pub fn main() !void {
             .rs = .{ .s = rs },
             .pc = 0x100,
         };
+        @memcpy(uxn.mem.m[0x100 .. 0x100 + rom.len], rom);
 
         while (true) uxn.loop();
+    } else return error.NoRom;
 }
 
 pub const Uxn = struct {