User`s manual

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 B
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. Each
jumper position is described in Table 2–1.
The SROM code defines the software configuration jumpers sp_bit<7:0>,as
shown in Figure 2–2 (see also Chapter 4).
The board ships with the jumpers listed in Tables 2–1 and 2–2 in the default
position.
System Jumpers and Connectors 2–1