1 .\" $NetBSD: dl.4,v 1.11 2003/07/26 20:17:37 salo Exp $
3 .\" Copyright (c) 1997 Ben Harris. All rights reserved.
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6 .\" modification, are permitted provided that the following conditions
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32 .Tn DL-11 Ns / Ns Tn DLV-11
35 .Cd "dl0 at uba? csr 0176500"
36 .Cd "dl1 at uba? csr 0176510"
37 .Cd "dl2 at uba? csr 0176520"
38 .Cd "dl3 at uba? csr 0176530"
43 .Tn DL-11 Ns -compatible
44 asynchronous serial card, and probably things compatible with it. A
47 will appear four times in the device list, as the ports look like
48 separate cards to the driver.
53 driver provides the normal interface described in
55 but many of the configuration calls are unsupported, since their
56 functions are handled by jumpers or switches on the serial card
57 itself. Calls related to modem-control lines are also ignored, since
58 these cards lack them.
60 There's a chance this driver might also work with an
66 but it hasn't been tested.
68 .Bl -tag -width /dev/ttyJ? -compact
70 Special files for communicating with dl devices.
76 The character in the receive buffer wasn't read before the next
77 character arrived, and has been lost.
78 .It dl%d: stray rx interrupt.
79 The driver was called to service a receive interrupt, but there was
80 nothing for it to read.
88 driver was written for
91 Ben Harris \*[Lt]bjh21@NetBSD.org\*[Gt]
95 and friends only have single-character receive and transmit buffers,
96 so an interrupt is generated for every character received or
97 transmitted. Attempting to receive data at even moderately high rates
98 will cause rx overruns. Fast transmission seems to be fine though.
100 There is no support in the driver for the paper-tape reader on an
106 The overrun message is logged in the interrupt routine itself, which
107 will probably just make the problem worse.
109 The CSR printed on startup is that of the receiver, while the
110 interrupt vector is that of the transmitter.
112 In order to determine the card's interrupt vector, the driver sends a
114 to each port. This may confuse things attached to them.
116 The driver has so far only been tested on a
118 It may or may not work on the other cards it claims to support.