MachTen Baud Rates


UNIX systems traditionally support baud rates from 50 to 9600 baud. The Macintosh hardware does not support baud rates below 300 baud, but it does support baud rates higher than 9600 baud. To take advantage of these higher baud rates, MachTen translates requests for the traditional UNIX baud rates to the more useful set of baud rates supported by the Macintosh. The table below lists the actual baud rate used by MachTen when the traditional baud rates are requested.

Baud Rate

Unix Name

MachTen Baud Rate

50

B50

14400

75

B75

28800

110

B110

57600

134

B134

115200

150

B150

230400

200

B200

300

300

B300

300

600

B600

600

1200

B1200

1200

1800

B1800

1800

240

B2400

240

4800

B4800

4800

9600

B9600

9600

19200

EXTA

19200

38400

EXTB

38400



Baud rates higher than 9600 baud are supported if Apple Serial DMA version 2.0.2 or later is installed. Serial DMA is included with Apple MacOS System 7.5.3.


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