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-rw-r--r--opl/opl_internal.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/opl/opl_internal.h b/opl/opl_internal.h
index 24e79644..2d027ad8 100644
--- a/opl/opl_internal.h
+++ b/opl/opl_internal.h
@@ -25,7 +25,7 @@ typedef int (*opl_init_func)(unsigned int port_base);
typedef void (*opl_shutdown_func)(void);
typedef unsigned int (*opl_read_port_func)(opl_port_t port);
typedef void (*opl_write_port_func)(opl_port_t port, unsigned int value);
-typedef void (*opl_set_callback_func)(unsigned int ms,
+typedef void (*opl_set_callback_func)(unsigned int us,
opl_callback_t callback,
void *data);
typedef void (*opl_clear_callbacks_func)(void);