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ENABLE REAL-TIME: CLOCK
When the jumper from 188 to 189 is installed, the real-time clock in
the Am9513 System Timing Controller is enabled.
ON-BOARD ROM TYPE SELECTION
Two ROM sockets are provided on the Am96/4116A board.
The user can
select 2708, 2716, 2732 E-PROMS or 2758 ROM.
The jumpers are listed in
table 2-10.
TABLE 2-10.
ROM TYPE JUMPER SELECTION
MEMORY DEVICES
FUriCTION
Am9708
Am9716
Am9732
2758
+12 V to pin 19
24- 25
-------
-------
-------
GND to pin 19
-------
-------
-------
25- 26
AA (bit 10)
-------
25- 27
25- 27
-------
AB (bit 11)
-------
-------
29- 30
-------
-~)
V to pin 21
30- 31
-------
-------
-------
+5 V to pin 21
-------
28- 30
-------
28- 30
ROM select
177-178
177-178
174-176
174-176
175-176
Note:
For 2708 types connect 70 to 71.
All others 71 to 72.
SYSTEM BUS PRIORITY
If the Am96/4116A is not the highest priority master, jumper pins 22 to
23.
Jumper pins 21 to 22 for highest priority.
Jumper pins 184 and
185 to dri ve BPRO* (Bus Pri ori ty OUT).
Jumpers i nsta
11
ed at the
factory are:
22-23 and 184-185 (sets up the daisy chain priority
scheme) •
INITIALIZE/POWER UP RESET
The power-up-reset function can be jumpered to the bus INIT line.
This
jumper is located between pins 190 and 191.
BUS CLOCK (BCLK,) AND CONSTANT CLOCK (CCLK) JUMPERS
The Am96/4116A can be used as the source of the 9.83 MHz BCLK and/or
CCLK Multibus clock signals.
The jumpers are 19 to 20 and 17 to 18.
2-9
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