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

DX
Port number: 0 for EXT, 1 for COM
Return Value
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AL: The byte received
Interrupt 0x14 service 0x03: Status request
Parameters
AH
DX
Return the status of the serial port.
0x03
Port number: 0 for EXT, 1 for COM
Return Value
Comments
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AH: Status code (bit field):
bit 6: Set if output buffer is empty.
bit 5: Set if output buffer is not full.
bit 4: Line break detected
bit 3: Framing error detected
bit 2: Parity error detected
bit 1: Set if overrun occurred on receiver.
bit 0: Set if data is available in receiver buffer.
Any reported UART error flags are cleared by hardware after the read is made for this call.
Interrupt 0x14 service 0x04: Initialize fossil driver
Parameters
AH
DX
Initialize the fossil driver for specified port.
0x04
Port specifier: 0 for EXT, 1 for COM
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