From 89a8fe403b19c7fb7c257e48ca3933ccbd710db4 Mon Sep 17 00:00:00 2001
From: Rekai Musuka <rekai@musuka.dev>
Date: Mon, 10 Jan 2022 02:55:41 -0400
Subject: [PATCH] feat(bus): have VCOUNT be addressable on the bus

---
 src/bus/io.zig | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/bus/io.zig b/src/bus/io.zig
index 4ea4e06..12e82ab 100644
--- a/src/bus/io.zig
+++ b/src/bus/io.zig
@@ -22,6 +22,7 @@ pub const Io = struct {
         return switch (addr) {
             0x0400_0000 => @as(u32, self.dispcnt.raw),
             0x0400_0004 => @as(u32, self.dispstat.raw),
+            0x0400_0006 => @as(u32, self.vcount.raw),
             else => std.debug.panic("[I/O:32] tried to read from {X:}", .{addr}),
         };
     }
@@ -30,6 +31,7 @@ pub const Io = struct {
         return switch (addr) {
             0x0400_0000 => self.dispcnt.raw,
             0x0400_0004 => self.dispstat.raw,
+            0x0400_0006 => self.vcount.raw,
             else => std.debug.panic("[I/O:16] tried to read from {X:}", .{addr}),
         };
     }
@@ -46,6 +48,7 @@ pub const Io = struct {
         return switch (addr) {
             0x0400_0000 => @truncate(u8, self.dispcnt.raw),
             0x0400_0004 => @truncate(u8, self.dispstat.raw),
+            0x0400_0006 => @truncate(u8, self.vcount.raw),
             else => std.debug.panic("[I/O:8] tried to read from {X:}", .{addr}),
         };
     }