Appendix
App-28
PL-5700 Series User’s Manual
INT 1Ah Setting/Reading Time and Date
INT 5Fh Expansion BIOS
*1
Backlight contrast control is available only on the PL-5700L1 and PL-5701l1. It is not
supported by the PL-5700T1 or PL-5701T1.
*2
8 contrast levels: D2, D1, D0, 000b (dark) ~ 111b (bright)
Backlight brightness: D4, 0b (dark) ~ 1b (bright)
Operatio n
Inpu t
O
u tpu t
Reading clock
A H = 01h
C X =
D X =
A L =
S ignifica nt 16 bits of current clock
data
Ins ignifica nt 16 bits of current
clock da ta
Overflow fla g on 24-hour system
S etti ng clock
AH =
C X =
D X =
01h
S ignifica nt 16 bits of clock
data
Ins ignifica nt 16 bits of
clock da ta
R ea ding time
AH = 02h
C H =
C L =
D H =
D L =
C Y=
Hours (B CD )
Minutes (B CD )
S econds (B CD )
S ummertime option (0 or 1)
E nd status
0: S ucces s fully completed
1: Error
S etti ng ti me
A H =
C H =
C L =
D H =
D L =
03h
Hours (B CD )
Minutes (B CD )
S econds (B CD )
S ummertime option (0 or
1)
R ea ding da te
AH = 04h
C
H =
C L =
D H =
D L =
C Y=
Wes tern calendar (Year given as 2-
digit BC D, significant 2 bits : 19 or
20)
Yea r (BC D)
Month (B CD )
D ay (B CD )
E nd status
0: S ucces s fully completed
1: Error
S etti ng date
A H =
C H =
C L =
D H =
D L =
05h
Wes tern calendar (Year
given as 2-digit B CD,
s ignificant 2 bits: 19 or 20)
Yea r (BC D)
Month (B CD )
D ay (B CD )
S etti ng a la rm
AH =
C H =
C L =
D H =
06h
Hours (B CD )
Minutes (B CD )
S econds (B CD )
C Y= End s ta tus
0: S ucces s fully completed
1: Error
C learing a la rm
AH = 07h
Operatio n
Input
O
utput
Display ON/OFF
(including backlight)
AX =
B L =
0800h
0 : OFF
1 : ON
AH = 0: Succes s fully completed
1: Error
R eading contrast *1
AX = 0A00h
AH =
AL =
AH =
AL =
0: S ucces s fully completed
C ontras t s etti ng (00h - 07h, 10H -
17H)
1: C MOS error
3: Default value
S etti ng contras t *2
AX =
B L =
00A01h
C ontras t s etti ng(00h -07h,
10h-17h)
AH =
=
0: S ucces s fully completed
1: C MOS error / contras t s etti ng
s ucces s fuly
completed
