comp.sys.3b1 FAQ part2

comp.sys.3b1 FAQ part2

Post by jbunc » Fri, 14 Nov 2003 08:33:49



Archive-name: 3b1-faq/part2
Version: $Id: 3b1-faq-part2,v 2.5 2000/09/05 19:17:48 jbunch




----------------------------------------------------------------------
| Answers to some frequently asked questions about the AT&T UNIX PC, |
| as well as some frequent problems, hints, and solutions. |
----------------------------------------------------------------------
| Make a Hard Copy on the FAQ *NOW*, it probably wont be readable if |
| it is on your machine when you *NEED* it. |
----------------------------------------------------------------------
[$Revision: 2.5 $ $Date: 00/09/05 19:17:48 $]
Send updates to XXXX@XXXXX.COM .

Part 2 of 2

------------------------------

Subject: 0.2. Table of Contents for part 2 of the faq.

0.2. Table of Contents for part 2 of the faq.
5.0. Upgrading continued.
5.3. Can I really get 4MB of memory, even with a 1.5MB combo
card, 512K RAM card, and 2MB of RAM on the motherboard?
5.4. What dynamic memory chips can be used to upgrade a
3b1/7300?
5.4. Can I hook up a 3.5" 720K floppy drive to my UNIX PC? How
about a 1.2MB or 1.44MB floppy drive? Can I run both the
3.5" drive and the 5.25" drive on my machine somehow?
5.5. Can I put a larger hard disk drive in the UNIX PC?
6.0. Maintenance
6.1. How do I park the hard disk heads before moving the machine?
6.2. How do I open the case and get to the motherboard?
6.3. Why does my fan sometimes speed up and slow down? Should I
replace it?
6.4. Why has my clock stopped?
7.0. Failures
7.1. What can I do when I turn on my UNIX PC and all I see is
a "green screen"?
7.2. What can I do when I turn on my UNIX PC and I have no
video?
7.3. What can I do when I get lots of FDERRs when
writing/formatting a floppy?
7.4. Why does rn fail with "Can't open /dev/tty" from the
built-in modem?
7.5. Can I connect my Starlan board to an Ethernet?
7.6. Can I run SLIP (Serial Line Internet Protocol) on my UNIX
PC?
7.7. What are the consequences of "fsck -s" (salvaging the
freelist)?
7.8. What does the "-s" option to dismount do?
7.9. How do I identify what motherboard revision I have?
7.10. How can the monitor fail?
8.0. Mysteries
8.1. What are the LED's left side of the machine for?
8.2. What's /etc/update? What does it do?
8.3. Why did the time display at the top of the screen go away?
8.4. How do I stop that darn double-ESC mode on console windows?
8.5. What do I do when the machine hangs at the boot message?
8.6. How can the UNIX PC be made more secure?
8.7. How do I access the expert menus in the diagnostics?
9.0. Credits

------------------------------

Subject: 5.0. Upgrading continued.

This is a continuation of the upgrading section from part 1 of the faq.

------------------------------

Subject: 5.3. Can I really get 4MB of memory, even with a 1.5MB combo
card, 512K RAM card, and 2MB of RAM on the motherboard?

The answer is yes. It does require a simple pin-ectomy. You
need to fool the hardware to think the 512K RAM card is in a slot that
doesn't physically exist on the UNIX PC. For more information on how
to do this, grab John Milton's HwNote06 from the archive sites.

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comp.sys.3b1 FAQ part2

Post by jbunc » Fri, 12 Dec 2003 11:16:10


Archive-name: 3b1-faq/part2
Version: $Id: 3b1-faq-part2,v 2.5 2000/09/05 19:17:48 jbunch




----------------------------------------------------------------------
| Answers to some frequently asked questions about the AT&T UNIX PC, |
| as well as some frequent problems, hints, and solutions. |
----------------------------------------------------------------------
| Make a Hard Copy on the FAQ *NOW*, it probably wont be readable if |
| it is on your machine when you *NEED* it. |
----------------------------------------------------------------------
[$Revision: 2.5 $ $Date: 00/09/05 19:17:48 $]
Send updates to XXXX@XXXXX.COM .

Part 2 of 2

------------------------------

Subject: 0.2. Table of Contents for part 2 of the faq.

0.2. Table of Contents for part 2 of the faq.
5.0. Upgrading continued.
5.3. Can I really get 4MB of memory, even with a 1.5MB combo
card, 512K RAM card, and 2MB of RAM on the motherboard?
5.4. What dynamic memory chips can be used to upgrade a
3b1/7300?
5.4. Can I hook up a 3.5" 720K floppy drive to my UNIX PC? How
about a 1.2MB or 1.44MB floppy drive? Can I run both the
3.5" drive and the 5.25" drive on my machine somehow?
5.5. Can I put a larger hard disk drive in the UNIX PC?
6.0. Maintenance
6.1. How do I park the hard disk heads before moving the machine?
6.2. How do I open the case and get to the motherboard?
6.3. Why does my fan sometimes speed up and slow down? Should I
replace it?
6.4. Why has my clock stopped?
7.0. Failures
7.1. What can I do when I turn on my UNIX PC and all I see is
a "green screen"?
7.2. What can I do when I turn on my UNIX PC and I have no
video?
7.3. What can I do when I get lots of FDERRs when
writing/formatting a floppy?
7.4. Why does rn fail with "Can't open /dev/tty" from the
built-in modem?
7.5. Can I connect my Starlan board to an Ethernet?
7.6. Can I run SLIP (Serial Line Internet Protocol) on my UNIX
PC?
7.7. What are the consequences of "fsck -s" (salvaging the
freelist)?
7.8. What does the "-s" option to dismount do?
7.9. How do I identify what motherboard revision I have?
7.10. How can the monitor fail?
8.0. Mysteries
8.1. What are the LED's left side of the machine for?
8.2. What's /etc/update? What does it do?
8.3. Why did the time display at the top of the screen go away?
8.4. How do I stop that darn double-ESC mode on console windows?
8.5. What do I do when the machine hangs at the boot message?
8.6. How can the UNIX PC be made more secure?
8.7. How do I access the expert menus in the diagnostics?
9.0. Credits

------------------------------

Subject: 5.0. Upgrading continued.

This is a continuation of the upgrading section from part 1 of the faq.

------------------------------

Subject: 5.3. Can I really get 4MB of memory, even with a 1.5MB combo
card, 512K RAM card, and 2MB of RAM on the motherboard?

The answer is yes. It does require a simple pin-ectomy. You
need to fool the hardware to think the 512K RAM card is in a slot that
doesn't physically exist on the UNIX PC. For more information on how
to do this, grab John Milton's HwNote06 from the archive sites.

------