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

Parameters
AH
DL
0x02
Character to be output to stdout
Return Value
Comments
Returns nothing
Each potential output device has its own output buffer. This function queues the provided output
character into each device's output buffer for which stdout is configured.
The transmitters are interrupt driven buffered I/O. If space is available in the transmit buffer(s) when this
call is made, the character is stored and control returned immediately to the caller. Otherwise a wait
loop is entered, awaiting space in each configured transmit buffer.
This function does not check for Ctrl-C.
Related Topics
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stdout configuration
Interrupt 0x21 service 0x06: Direct Console Output
If DL!=0xFF: Send the character in DL to the standard output.
If DL==0xFF: read character from stdin if one is available.
Parameters
AH
DL
0x06
Character to be output to stdout
Return Value
If call with DL!=0xFF then no return value (only output to stdout)
If call with DL==0xFF then
If input character is available at stdinthen
Set BXregister to indicate the stdinchannel source of character,
where: 1: EXT , 2: COM , 4: Telnet.
Return input character in ALand reset CPU's zero flag
Else
Set CPU's zero flag to indicate no character available
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