Motorola MVME177P, Инструкция по установке и эксплуатации

Страница: 23 / 108

Preparing the Board
http://www.motorola.com/computer/literature 1-5
1
MVME177P Configuration
Figure 1-1 illustrates the placement of the jumper headers, connectors,
configuration switches, and various other components on the
MVME177P. Manually configurable jumper headers and configuration
switches on the MVME177P are listed in the following table.
General Purpose Readable Jumpers (J1)
Each MVME177P may be configured with readable jumpers. These
jumpers can be read as a register (at address $FFF40088) in the VMEchip2
Local Control/Status register (refer to the Programmer’s Reference Guide
for details). The bit values are read as a 1 when the jumper is off, and as a
0 when the jumper is on. The MVME177P is shipped from the factory with
all jumpers installed except GPI3 (pins 7-8), as diagrammed below.
Table 1-2. MVME177P Configuration Settings
Function Factory Default
General Purpose Readable Jumpers (J1) No jumper on 7-8
VME System Controller (J6) 1-2
SRAM Backup Power Source (J9) 1-3, 2-4
Serial Port 4 Clock Configuration (J10 and J11) 2-3, 2-3
Petra SDRAM Size (S3) Varies
Board EPROM/Flash Mode (S4) On-Off
J1
2
1
16
15
GPI0 GPI1 GPI2 GPI3 GPI4 GPI5 GPI6 GPI7
All Zeros but GPI3 (Factory Configuration)