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Add more detail on CPUs to AS4100 section based on some experimentation.

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Minor misc. wordsmithing
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Wilko Bulte 2003-05-04 20:25:53 +00:00
parent 5d853216d2
commit 61c7d26dfc
1 changed files with 18 additions and 8 deletions
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26
release/doc/en_US.ISO8859-1/hardware/alpha/proc-alpha.sgml
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@ -44,6 +44,8 @@
<para>You will see references to DEC, Digital Equipment Corporation and
Compaq used more or less interchangeably. Now that Compaq has acquired
Digital Equipment it would be more correct to refer to Compaq only.
To be completely politically correct given that Hewlett Packard
in turn has acquired Compaq I probably should be using HP everywhere.
Given the fact that you will see the mix of names everywhere, I don't
bother.</para>
</note>
@ -2229,21 +2231,29 @@ cpu EV5 #dependent on CPU model installed</programlisting>
</listitem>
</itemizedlist>
<para>Rawhide can be equipped with a variety of CPU modules. CPU
modules exist in versions with and without external cache. In all
cases the CPU modules installed always must be of the same speed. A mix
of NT-only and full-blown Tru64/VMS CPUs works fine. It will however
result in the system reporting itself to the operating system
as a Digital Server 730x (so the NT-only variant). &os; does not care,
but such a system will not allow Tru64 or VMS to run.</para>
<para>Rawhide uses a maximum of 8 RAM modules. These modules are used
in pairs and supply 72 bits to the bus (this includes ECC bits).
Memory can be EDO RAM or synchronous DRAM. A fully populated AS4100
has 4 pairs of memory modules. The AS4000 model is limited to 2 pairs
of memory modules. Given the choice use SDRAM for
best performance. The highest capacity memory board must be in
memory slot 0. A mix of memory board sizes is allowed. A mix
of EDO and SDRAM works as well (assuming you don't
try to mix EDO and SDRAM in one module pair). A mix of EDO and SDRAM
best performance. The highest capacity memory boards must be in the
memory slots marked MEM0L and MEM0H. A mix of memory board
sizes is allowed. A mix of EDO and SDRAM works as well (assuming you don't
try to mix EDO and SDRAM in a single module pair). A mix of EDO and SDRAM
results in the <emphasis>entire</emphasis> memory subsystem running at
the slower EDO timing</para>
the slower EDO timing.</para>
<para>Rawhide has an embedded Symbios 810 chip that gives you a
narrow fast-SCSI bus. Generally only the SCSI CDROM is driven by
this interface. </para>
this interface.</para>
<para>Rawhides are available with a 8 64-bit PCI / 3 EISA
slot expansion backplanes (called <quote>Saddle</quote> modules). There
@ -2262,13 +2272,13 @@ cpu EV5 #dependent on CPU model installed</programlisting>
<note><para>EISA slots are currently unsupported, but the Compaq Qvision
EISA VGA adapter is treated as an ISA device. It therefore works
OK as a console. In case you use EISA options in your machine you
as a console. In case you use EISA options in your machine you
must run the EISA Configuration Utility (ECU) from floppy. Do yourself
a favor and use the Tru64/OpenVMS ECU, and not the WindowsNT ECU.
</para></note>
<para>Rawhide employs an I2C based power controller system. If
you want to be sure all power is removed from the system remove the
you want to be sure all power is removed from the system remove all
mains cables from the system.</para>
<para>Rawhide comes with RCM functionality, which means you can