Chapter 8 - Using MS-DOS
PL-5910 Series User Manual
8-25
Function 10h
Expansion Setting
Designates the type of data transmission method used. XON/XOFF and RTS can
be used at the same time.
Input:
AH = 10h
AL = Flow Control Method
Bit 0
Flow is controlled according to the XON/XOFF setting at
the time of data reception.
0: Not used for control (default) 1: Used for control
Bit 1
Flow is controlled according to the RTS setting at the time
of data reception.
0: Not used for control (default) 1: Used for control
Bit 2,3
Reserved
(Keep set to "0")
Bit 4
Other party's XON/XOFF setting during data transfer
0: Disabled (default) 1: Enabled
Bit 5
Other party's CTS setting during data transfer
0: Disabled (default) 1: Enabled
Bit 6,7
Reserved
(Keep set to "0")
CH = Timing used for enabling XON (default is 25)
Designates what percentage the buffer must empty to before the XON com-
mand is enabled.
CL = Timing used for enabling XOFF (default is 75)
Designates what percentage the buffer must fill to before the XOFF command
is enabled.
* Be sure that: 0 CH CL 100.
BH = Length of transmit time out (Unit = 500msec) Default - 6 [3 seconds]
BL = Length of receive time out (Unit = 500msec) Default - 6 [3 seconds]
DX = Port Number (0 to 3)
Output:
AH = Line Status
0: Normal exit
Other than 0: Designated error
