projects / unix-history / blame
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1 | .\" Copyright (c) 1987 The Regents of the University of California. |
| 2 | .\" All rights reserved. | |
| f7f632da | 3 | .\" |
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4 | .\" This code is derived from software contributed to Berkeley by |
| 5 | .\" Computer Consoles Inc. | |
| 6 | .\" | |
| 91cff1e1 | 7 | .\" %sccs.include.redist.man% |
| 766d117f | 8 | .\" |
| 91cff1e1 | 9 | .\" @(#)mpcc.4 6.5 (Berkeley) %G% |
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10 | .\" |
| 11 | .TH MPCC 4 "" | |
| 12 | .UC 7 | |
| 13 | .SH NAME | |
| 14 | mpcc \- Multi protocol communications controller | |
| 15 | .SH SYNOPSIS | |
| 66b23049 | 16 | device mp0 at vba? csr 0xffff5000 mpintr mpdlintr |
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17 | .br |
| 18 | thru | |
| 19 | .br | |
| 66b23049 | 20 | device mp15 at vba? csr 0xffff5f00 mpintr mpdlintr |
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21 | .SH DESCRIPTION |
| 22 | The MPCC has two different connecter panel styles. | |
| 23 | The 16 port MPCC will support any combination of SYNC or ASYNC ports. | |
| 24 | The 32 port MPCC will only support ASYNC ports. | |
| 25 | Each async line attached to the MPCC communications controller | |
| 26 | behaves as described in | |
| 27 | .IR tty (7) | |
| 28 | and may be set to run at any of 16 speeds; see | |
| 29 | .IR tty (7) | |
| 30 | for the encoding. | |
| 31 | .PP | |
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32 | Each MPCC controller uses 2 consecutive entries in the SCB for |
| 33 | download/handshake, and command/response interrupts. These entries | |
| 34 | start at 0xa0 for the 1st controllers download/handshake interrupts | |
| 35 | and 0xa1 for the 1st controllers command/response. | |
| 36 | .PP | |
| 37 | The MPCC controller requires a firmware download to be completed | |
| 38 | before it can function. See \fIdlmpcc\fP(8) and \fImpcctab\fP(4) | |
| 39 | for specific information on how to configure and download the | |
| 40 | firmware into the MPCC controller. | |
| 41 | .PP | |
| 42 | A maximum of 16 MPCC communication controllers can be supported. | |
| f7f632da | 43 | .SH FILES |
| 66b23049 | 44 | /dev/tty[A-P][0-f] for 16 port MPCC |
| f7f632da | 45 | .br |
| 66b23049 | 46 | /dev/tty[A-P][0-f,g-v] for 32 port MPCC |
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47 | .SH "SEE ALSO" |
| 48 | tty(7) | |
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49 | .SH BUGS |
| 50 | As of the 4.3BSD-tahoe release, only 16 port mpcc's work, and then | |
| 51 | only in async mode. Attempting to reload firmware on an mpcc with | |
| 52 | active ports may crash the system. This should be fixed within | |
| 53 | a short period of time; contact the CSRG at University of California, | |
| 54 | Berkeley, for upgrade information. |