Motorola MVME177 Installation And Use Manual page 32

Hardware Preparation and Installation
2
Header
Number
J9
Serial Port 4
clock
conÞguration
select headers
J10
MVME177 Header Notes:
1. The general purpose readable jumpers on header J1 can be read as I/O control
register 3 (at $FFF40088, bits 0-7) in the VMEchip2 LCSR (see Chapter 4,
VMEchip2). The bit values are read as a 1 when the jumper is off, and as a 0
when the jumper is on.
2. On the MVME177, pins 7 and 8 (bit 3) are removed for board ID and the bit
value is reserved.
2-8
Table 2-2. Configuring MVME177 Headers (Continued)
Header
Description ConÞguration
Receive RTXC4
Drive RTXC4
Receive TRXC4
Drive TRXC4
Jumpers
2 -- 3
(Factory
conÞguration)
1 -- 2
2 -- 3
(Factory
conÞguration)
1 -- 2
Notes
1 2 3
7
1 2 3
3
1 2
7
3
1 2