From 89a1f9188f7020271df89656a2d4e80084a9378f Mon Sep 17 00:00:00 2001
From: Rekai Musuka <rekai@musuka.dev>
Date: Tue, 1 Mar 2022 21:47:14 -0400
Subject: [PATCH] feat: pretend unhandled I/O reads/writes never happened

Doom is now playable but I think it dereferences a null pointer every
once and a while (completely my fault)
---
 src/bus/io.zig | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/bus/io.zig b/src/bus/io.zig
index ef1a3e3..f8da076 100644
--- a/src/bus/io.zig
+++ b/src/bus/io.zig
@@ -110,7 +110,7 @@ pub fn write32(bus: *Bus, addr: u32, word: u32) void {
         },
         0x0400_0204 => log.warn("Wrote 0x{X:0>8} to WAITCNT", .{word}),
         0x0400_0208 => bus.io.ime = word & 1 == 1,
-        else => std.debug.panic("Tried to write 0x{X:0>8} to 0x{X:0>8}", .{ word, addr }),
+        else => log.warn("Tried to write 0x{X:0>8} to 0x{X:0>8}", .{ word, addr }),
     }
 }
 
@@ -128,7 +128,7 @@ pub fn read16(bus: *const Bus, addr: u32) u16 {
         0x0400_010A => failed_read("Tried to read halfword from TM2CNT_H", .{}),
         0x0400_010E => failed_read("Tried to read halfword from TM3CNT_H", .{}),
         0x0400_0204 => failed_read("Tried to read halfword from WAITCNT", .{}),
-        else => std.debug.panic("Tried to read halfword from 0x{X:0>8}", .{addr}),
+        else => failed_read("Tried to read halfword from 0x{X:0>8}", .{addr}),
     };
 }
 
@@ -190,7 +190,7 @@ pub fn write16(bus: *Bus, addr: u32, halfword: u16) void {
         0x0400_0202 => bus.io.irq.raw &= ~halfword,
         0x0400_0204 => log.warn("Wrote 0x{X:0>4} to WAITCNT", .{halfword}),
         0x0400_0208 => bus.io.ime = halfword & 1 == 1,
-        else => std.debug.panic("Tried to write 0x{X:0>4} to 0x{X:0>8}", .{ halfword, addr }),
+        else => log.warn("Tried to write 0x{X:0>4} to 0x{X:0>8}", .{ halfword, addr }),
     }
 }