added PS/2 mouse code

[bootcensus] / src / asmops.h

diff --git a/src/asmops.h b/src/asmops.h
index dbe7ec8..1f42767 100644 (file)
--- a/src/asmops.h
+++ b/src/asmops.h
@@ -74,6 +74,7 @@ static inline uint32_t inl(uint16_t port)
                "outl %0, %1\n\t" \
                :: "a" ((uint32_t)(src)), "dN" ((uint16_t)(port)))
 
+/* delay for about 1us */
 #define iodelay() outb(0, 0x80)