User`s guide

• Time-of-year (TOY) function provided by a Dallas DS1287 chip

• 1MB ﬂash ROM memory using the Intel 28F008SA chip

The ISA has two dedicated expansion slots and one shared expansion slot with

the PCI.

1.1.8 Software Support

Software support includes an industry-standard, 1MB ﬂash ROM containing

debug monitor code and a console interface. Source code listings for all

software (including boot code and diagnostic ROM monitor) are provided. The

debug monitor provides the ability to do the following:

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

port.

• Load data from the ﬂash ROM through the debug monitor.

• Examine and deposit the AlphaPC64 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 by using DECladebug software running

on a host communicating through an Ethernet connection.

Development code can be generated on a host system and loaded into the

AlphaPC64 through the serial line, optional Ethernet port, diskette, or ﬂash

ROM. Full design database and user documentation are provided.

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

is deasserted, the contents of the SROM are read into the instruction cache

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

is loaded from the ﬂash ROM. Following initialization, control is transferred to

the code in the ﬂash ROM.

AlphaPC64 Introduction 1–5