12-16-2011
Physical Memory expansion
IBM says we cannot expand our physical memory on our 570's without upgrading all the existing DIMMS since all slots are currently full. Is it really so difficult for IBM to build servers that leave a couple vacant slots for future expansion? A technical explanation would be greatly appreciated. Thanks All.
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Memory size: 36854 Megabytes
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0 0 0 28220616 1318888 15 143 0 0 0 0 0 253 2 15 0 5215 14989 5917 7 0 93
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TR(4) BSD Kernel Interfaces Manual TR(4)
NAME
tr -- TROPIC based shared memory Token-Ring cards device driver
SYNOPSIS
tr0 at isa? port 0xa20 iomem 0xd800 irq ?
tr* at isa? port ? irq ?
tr* at isapnp?
tr* at mca? slot ?
tr* at pcmcia? function ?
DESCRIPTION
The tr device driver supports TROPIC I based shared-memory Token-Ring cards.
HARDWARE
Supported cards include the following IBM and 3Com models:
IBM Token-Ring Network PC Adapter
IBM Token-Ring Network PC Adapter II
IBM Token-Ring Network Adapter/A
IBM Token-Ring Network 16/4 Adapter
IBM Token-Ring Network 16/4 Adapter/A
IBM Token-Ring 16/4 Credit Card Adapter
IBM Token Ring Auto 16/4 Credit Card Adapter
IBM Turbo 16/4 Token Ring PC Card
IBM 16/4 ISA Adapter
IBM Auto 16/4 Token-Ring ISA Adapter
IBM Token Ring 16/4 Credit Card Adapter
IBM Token Ring Auto 16/4 Credit Card Adapter
IBM Turbo 16/4 Token Ring PC Card
3Com 3C619 TokenLink
3Com 3C319 TokenLink Velocity
3Com 3C389 TokenLink Velocity PC Card
SOURCE ROUTING
Setting IFF_LINK0 enables Token-Ring source routing. Setting IFF_LINK1 uses all-routes broadcasts otherwise single-route broadcasts are
used.
NOTES
The MCA attachment has been only tested on IBM Token Ring 16/4 Adapter/A so far. It doesn't support ifmedia(4) yet, too.
SEE ALSO
ifmedia(4), intro(4), isa(4), isapnp(4), mca(4), pcmcia(4), ifconfig(8)
HISTORY
The tr driver appeared in NetBSD 1.4.
BUGS
The PCMCIA attachment does not work with the cbb(4) CardBus driver.
BSD
April 14, 1999 BSD