diff --git a/src/cpu.rs b/src/cpu.rs
index 6b0a6b4..6993ff0 100644
--- a/src/cpu.rs
+++ b/src/cpu.rs
@@ -610,6 +610,7 @@ impl Default for CPU {
             stack: vec![],
             mem: mem! {
                 Charset [0x0050..0x00a0] = include_bytes!("mem/charset.bin"),
+                HiresCharset [0x00a0..0x0140] = include_bytes!("mem/hires.bin"),
                 Program [0x0200..0x1000],
             },
             font: 0x050,
diff --git a/src/cpu/mem.rs b/src/cpu/mem.rs
index 5c14a8f..9880843 100644
--- a/src/cpu/mem.rs
+++ b/src/cpu/mem.rs
@@ -76,6 +76,8 @@ impl Grab for Mem {
 pub enum Region {
     /// Character ROM (but writable!)
     Charset,
+    /// Hires character ROM
+    HiresCharset,
     /// Program memory
     Program,
     #[doc(hidden)]
diff --git a/src/mem/hires.bin b/src/mem/hires.bin
new file mode 100644
index 0000000..a95ff3c
Binary files /dev/null and b/src/mem/hires.bin differ