diff --git a/src/cpu/disasm.rs b/src/cpu/disasm.rs
index c7c0d95..4bc9071 100644
--- a/src/cpu/disasm.rs
+++ b/src/cpu/disasm.rs
@@ -459,8 +459,8 @@ mod disp {
                 Insn::LdImm16(r16) => write!(f, "ld\t{r16}, #u16"),
                 Insn::LdInd(src) => write!(f, "ld\ta, {src}"),
                 Insn::StInd(dst) => write!(f, "ld\t{dst}, a"),
-                Insn::LdC => write!(f, "ld\ta, [c]"),
-                Insn::StC => write!(f, "ld\t[c], a"),
+                Insn::LdC => write!(f, "ld\ta, [0xff00 + c]"),
+                Insn::StC => write!(f, "ld\t[0xff00 + c], a"),
                 Insn::LdAbs => write!(f, "ld\ta, [#u16]"),
                 Insn::StAbs => write!(f, "ld\t[#u16], a"),
                 Insn::StSpAbs => write!(f, "ld\t[#u16], sp"),