User`s guide

2
System Jumpers and Connectors
The AlphaPC64 uses jumpers to implement variations in clock frequency and
L2 cache size and speed. These jumpers must be configured for the user’s
environment. Onboard connectors are provided for the I/O, memory SIMMs,
serial and parallel peripherals, integrated device electronics (IDE) devices, and
L2 cache SIMMs.
After the module is configured, you can apply power and run the debug
monitor. The debug monitor and its commands are described in the Alpha
Microprocessors Evaluation Board Debug Monitor User’s Guide. Appendix D
provides information about other software design tools.
2.1 Configuration Jumpers
The software and hardware configuration jumpers are identified in Figures 2–1
and 2–2, and are described in Tables 2–1 and 2–2.
2.1.1 Software Configuration Jumpers
The software configuration jumpers are completely programmable. Table 2–1
describes each jumper position.
The SROM code defines the software configuration jumpers sp_bit<7:0>,as
shown in Figure 2–2 (see Appendix B).
The board is shipped with the jumpers described in Tables 2–1 and 2–2 in the
default position.
System Jumpers and Connectors 2–1