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34 .\" from: @(#)dcl.4 8.1 (Berkeley) 6/9/93
43 98628A serial communications link
45 .Cd "dcl0 at dio? scode ? flags 0x1"
47 The 98628A is a buffered
52 communications interface.
53 It has one port with full modem control.
55 Input and output for each line may set to one of following baud rates;
56 0, 50, 75, 110, 134.5, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
61 may be set to 1 if the line should be treated as hard-wired with
62 carrier always present, or to 0 if modem control is desired.
66 cable "98626 \*[Am] 98628 opts.002,
69 5061-4216" to attach non-modem devices.
72 cable "98626 \*[Am] 98628 opts.001,
75 5061-4215" to attach modems.
77 The 98628A has a 256 byte input silo and a 256 output silo. Input interrupts
78 happen on a per character basis.
80 The high water and low water marks in the kernel tty routines are completely
81 inappropriate for a device like this with a large input buffer. Don't use
82 tandem mode if possible. A fast system can handle input at 19.2K baud without
85 For output to devices that make heavy use of
88 than 256 will improve performance marginally.
90 .Bl -tag -width /dev/ttyl[0-9] -compact
95 .It dcl%d: error 0x%x RESET CARD.
96 Where the errors are encoded:
97 .Bd -unfilled -offset indent
99 0x0d uart receive overflow
100 0x0e receive overflow
101 0x0f missing external clock
102 0x10 cts false too long
104 0x12 activity timeout
105 0x13 connection not established
106 0x19 illegal databits/parity
107 0x1a register address out of range
108 0x1b register value out of range
117 device is not actually supported in
119 This man page is only for information purposes in case someone wishes
120 to port the driver from 4.3BSD.
122 Breaks received at a faster rate than 1 break every second will be
123 recognized as a single break.
125 Console use is not supported.
130 modes of the card are not supported.