SS.ComSt_Get_Status

Returns serial port configuration information.

Entry Conditions

A
path number

B
SS.ComSt ($28)

Exit Conditions

Y
high byte: parity

 
_ low byte: baud rate_

 
(See the SS.ComSt SetStat call for values)

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 this call when performing an SS.Opt GetStat on an SCF-type device. User calls to SS.ComSt do not update the path descriptor. Use the SS.Opt GetStat call for most applications because it automatically updates the path descriptor.