IPC@CHIP Documentation - SC12 @CHIP-RTOS V1.10

Parameters
AH
AL
BX
Must be 0x33.
Bit 0 = 1 set stdout, Bit 1 = 1 set stdin
Channel bits, see comment
Return Value
Comments
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AX=0 DX=0: Success
AX=DX=-1: Invalid parameter
Channel bits for BX register:
Bit 0: Serial port 0 (PORT EXT)
Bit 1: Serial port 1 (PORT COM)
Bit 2: Telnet server
Bit 3: User channel
Setting a bit to zero deactivates this channel, setting a bit to one activates the specified channel
Interrupt 0xA0 service 0x34: Get stdin/stdout settings
Parameters
AH
Get the stdin/stdout settings
Must be 0x34.
Return Value
Comments
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AX=0, BX contains stdout settings, CX: stdin settings
Return values
Bit 0 == 1: Serial port 0 (EXT)
Bit 1 == 1: Serial port 1 (COM)
Bit 2 == 1: Telnet server
Bit 3 == 1: User channel
Interrupt 0xA0 service 0x35: Install user specific stdio handlers
Installs user specific stdio channel handlers.
This API call allows the user to install their own stdio handler functions, e.g. for a user developed input/output device connected to
the IPC@CHIP (e.g. a display and/or keyboard device) or a user TCP application similar to Telnet.
The user must implement inside of their application four functions for reading and writing characters from/to their stdin/stdout device.
After installing these functions with this API call and setting stdin and/or stdout to include the user channel with Set stdio channels,
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