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Installation
Prime Proprietary
2.8.10.10.2 AMLC Baud Rate Conversion
AMLC
boards
have
eight different line speeds that are selectable by
bits 8, 9 and 10 of the line configuration control word
(OTA
'0154).
Four of these line speeds are fixed at 110, 134.5, 300, and 1200 Baud.
One
line
is
a programmable rate, and three lines are selectable via
hardware jumpers.
The factory presets the
selectable
rates
at
75,
i150, and 1800 baud.
These
selectable
clocks
can be changed via the three jumpers on the
header dip at location 1K (see Table 2-33).
IC 1K
pins
1-8
contain
the available baud rates.
Selectable baud rates are on IC 1K pins 15,
10, and 13.
To change a selectable baud rate, control word bits 8, 9,
and 10 must be set to '101, '110, and '11l respectively.
TABLE 2-33: AMLC BAUD RATE CONVERSION
PIN NO.
BAUD RATE
75
600
290
19200
9600
4800
2400
1800
Standard baud rate selections are jumpered:
75 baud = IC LK pin 1 to 15
250 baud = IC LK pin 3 to 10
1800 baud = IC 1K pin 8 to 13
After
jumpering the selected baud rate, the baud rate can be assigned
using the PRIMOS AMLC command CONFIG parameter (refer to
#80
Service
Manual).
2.8.10.10.3 AMLC Cabling
Refer
to
Table
2-34
and Figure 2-39 for proper cabling procedures.
Each AMLC cable should be marked with the
actual
AMLC
(octal)
line
numbers connected to it.
TABLE 2-34: AMLC CABLE TO BULKHEAD CONFIGURATION
PHYSICAL
BULKHEAD
AMLC
CONNECTOR
BOARD
AMLC
PORT-CABLE
USER #
BOARD #
LINE
LINE #
CONNECTOR
i
i
0
J20
2
Device
Cc
2
2
J19
3
Address=
3
2
Ji8
4
54
4
3
Ji7
5
070-C
2-
68
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