SS.ComSt Set Status

Used by the SCF manager to configure a serial port.

Entry Conditions
A	path number
B	SS.ComSt ($28)
Y	high byte: parity
	low byte: baud rate
Error Output
CC	carry set on error
B	error code

Additional Information

Baud Configuration. The high order byte of Y determines the baud rate, the word length, and number of stop bits. The byte is configured as follows:

PD.BAU  7 6 5 4 3 2 1 0
        | | | | |     |
        | +-+ | +-----+
        |  |  |    |
        |  |  |    +----- Baud rate
        |  |  +---------- Reserved
        |  +------------- Word length
        +---------------- Stop bits

Stop bits:
0	1
1	2
Word length:
00	8 bit
01	7 bit
Baud rate
0000	110
0001	300
0010	600
0011	1200
0100	2400
0101	4800
0110	9600
0111	19200
1xxx	undefined

Parity Configuration. The low order byte of Y determines parity. The byte is configured as follows:

PD.BAU  7 6 5 4 3 2 1 0
        |   | |       |
        +---+ +-------+
          |       |
          |       +----- Special use
          +------------- Parity

Parity
xx0	none
001	odd (ACIAPAK or MODPAK only)
011	even (ACIAPAK or MODPAK only)
101	transmit: mark
	receive: ignore
111	transmit: space
	receive: ignore

• The SCF manager uses SS.ComSt to inform a driver that serial port configuration information has been changed in the path descriptor. After calling SS.ComSt, a user routine must call the SS.Opt SetStat to correctly update the path descriptor.
• This call is for the use of the SCF manager. Use SS.Opt for changing baud, stop bit, and parity values.