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-rw-r--r--baremetal/400.mu1
1 files changed, 1 insertions, 0 deletions
diff --git a/baremetal/400.mu b/baremetal/400.mu
index 1121a00a..0f36e3fe 100644
--- a/baremetal/400.mu
+++ b/baremetal/400.mu
@@ -1 +1,2 @@
 sig pixel screen: (addr screen), x: int, y: int, color: int
+sig read-key kbd: (addr keyboard) -> _/eax: byte