Implement usleep using real time clock.

The old usleep implementation relied on ps2 port refresh bit which is
    not very portable.
This patch also refactors some of the code in clock.c.

1 files changed, 0 insertions, 3 deletions

diff --git a/src/cmos.h b/src/cmos.h
index 8a588e9d..6546b5a8 100644
--- a/src/cmos.h
+++ b/src/cmos.h
@@ -39,9 +39,6 @@
 #define CMOS_BIOS_DISKTRANSFLAG  0x39
 #define CMOS_BIOS_BOOTFLAG2      0x3d
 
-// CMOS_STATUS_B bitdefs
-#define CSB_EN_ALARM_IRQ (1<<5)
-
 // CMOS_FLOPPY_DRIVE_TYPE bitdefs
 #define CFD_NO_DRIVE 0
 #define CFD_360KB    1