DOS Fn 440cH CL=45H: IOCTL Set Retry Iteration Count
Compatibility: 3.3+
Expects: AX 440cH
BX file handle (device or disk file)
CL 45H
CH device category: 00H=unknown
01H=COMn (DOS 3.3+)
03H=console (screen + keyboard) (DOS 3.3+)
05H=parallel printer (DOS 3.2+)
DS:DX addr of a 16-bit word containing the desired number of
retries
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Returns: AX error code if CF is set to CY
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Info: Sets the number of times the device driver is to try to send
output to the device before assuming that the device is busy.
DS:DX points to a 2-byte buffer that contains a 16-bit value
specifying the desired number of retries.
Notes: ■ This is used only for printer drivers that support
"Output Until Busy". See Device Requests and DvRq 10H.
■ This setting is system/global. Before changing it, you should
use fn 440CH 65H to obtain the current value. Change it back
before exiting.
See Also: Fn 44H (IOCTL)
Fn 440cH (generic IOCTL for character devices)
Fn 440cH 65H (query retry iteration count)
Generic IOCTL Data Packets
Device Drivers
DOS Functions
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