Owner's Manual

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MS-96D9
mov dx, 04eh ;CR F7h: bit 4 ll 0 (clear event)
mov al, 0f7h
out dx, al
inc dx
in al,dx
and al, 0efh
out dx, al ;CR F6h: bit0~7 ll in counter time
E. Exit conguration mode
mov dx, 04eh
mov al, 0aah
out dx, al