zsc
—
serial communications interface
The zsc
driver provides support for Z8530- and
Z85230-compatible EIA RS-232C (CCITT V.28) communications interfaces. The
Z8530 has a 3 character buffer, and the Z85230 has a 8 character buffer.
However, due to limitations in the design of the Z85230, the driver is unable
to distinguish it from the Z8530 and will not enable any enhanced features of
the controller.
Input and output for each line may set to one of following baud
rates; 50, 75, 110, 134.5, 150, 300, 600, 1200, 1800, 2400, 4800, 9600,
19200, 38400, 57600, 115200, 230400, or any other baud rate which is a
factor of 115200.
The zsc
driver was originally derived from the sun3
zs
driver and is currently under development.
Data loss is possible when using high speeds, particularly on older (68020 or
68030) Macintosh models and on busy systems.