Hardware Preparation and Installation
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Serial Port 3 I/O Path Selection (J13)
On the MVME1600-011, serial port 3’s I/O signals are routed to backplane
connector P2 and to front panel connector J2. Header J13 determines the
state of the DSR, RI, and TM signals on serial port 3.
With a jumper installed on J13, DSR, RI, and TM come from the front
panel.
With the jumper removed, P2 I/O is selected. The DSR, RI, and TM signals
are not supported in this case, so DSR is held true while RI and TM are
held false.
General-Purpose Software-Readable Header (J14)
Header J14 provides eight readable jumpers. These jumpers can be read as
a register at ISA I/O address $80000801. Bit 0 is associated with header
pins 1 and 2; bit 7 is associated with pins 15 and 16. The bit values are read
as a zero when the jumper is installed, and as a one when the jumper is
removed.
The PowerPC firmware (PPCBug) reserves the four lower-order bits,
SRH3 to SRH0. They are defined as shown in the following list:
Jumper On = Front Panel I/O
DSR, RI, and TM from front panel
to 8536 device
Jumper Off = P2 I/O (factory configuration)
DSR to 8536 device held true
RI and TM to 8536 device held false
J13
J13
2
1
2
1
Содержание MVME1603
Страница 1: ...MVME1603 MVME1604 Single Board Computer Installation and Use V1600 1A IH4 ...
Страница 14: ...xiv ...
Страница 156: ...Using the Debugger 5 8 5 ...
Страница 176: ...ENV Set Environment 6 20 6 ...
Страница 190: ...EMC Compliance B 4 B ...
Страница 200: ...Proper Grounding C 10 C ...
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