User`s manual

1.2 Board Components and Features

1.2.8 Software Support

The Alpha PCI 64–275 supports the Windows NT operating system through an

ARC ﬁrmware console. This console is resident on the module in 1MB of ﬂash

ROM. In addition to supporting the operating system, the console provides code

for power-up testing, initializing, and a debug monitor. Section 4.4 describes

the ﬂash ROM in more detail.

The basic debug monitor supports the following functions:

• Download ﬁles through serial port, I/O diskette, and optional Ethernet

port.

• Load data from the ﬂash ROM through the debug monitor to selected cache

locations.

• Examine and deposit the Alpha PCI 64–275 system register, 21064A

internal processor registers (IPRs), and I/O mapped registers.

• Examine and modify DRAM and I/O mapped memory.

• Disassemble CPU instructions in memory.

• Transfer control to programs in memory.

• Perform native debugging, including breakpoints and single stepping.

• Perform full source-level debugging, using DECladebug running on a host

communicating through an Ethernet connection.

A serial ROM (SROM) contains the 21064A initialization code. When reset is

deasserted, the contents of the SROM are read into the 21064A internal cache

(Icache) and are executed to perform initialization. After initialization, code is

loaded from the ﬂash ROM to memory, then control is transferred to the code

in memory.

1.2.9 Component Layout

Figure 1–3 shows the Alpha PCI 64–275 board component layout and

dimensions.

1.2.10 Board Summary

Table 1–2 lists the physical, performance, and operating characteristics of the

Alpha PCI 64–275.

1–6 Alpha PCI 64–275 Introduction