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Unix-PC/3b1 Computers FAQ



Frequently Asked Questions about AT&T UNIX PC, PC7300, and 3B1 computers

This FAQ about 3b1 computers was compiled and written by John B. Bunch with numerous contributions by others. It should be read by all who want to participate in the comp.sys.3b1 newsgroup.

Part I: General

-1.1. What exactly are the AT&T UNIX PC, PC7300, and 3B1?
comp.sys.3b1 FAQ: . What exactly are the AT&T UNIX PC, PC7300, and 3B1?
-1.2. What is the operating system? Its origins?
comp.sys.3b1 FAQ: . What is the operating system? Its origins?
-1.3. What are the "OSU Archives"?
comp.sys.3b1 FAQ: . What are the
-1.4. Who supports these machines? Are there any user groups?
comp.sys.3b1 FAQ: . Who supports these machines? Are there any user groups?
-1.5. Where can I get my machine serviced or fixed?
comp.sys.3b1 FAQ: . Where can I get my machine serviced or fixed?

Part II: Software

-2.1. How do I get my free Personal Calendar program?
comp.sys.3b1 FAQ: . How do I get my free Personal Calendar program?
-2.2. What is "THE STORE!" and how can I access it?
comp.sys.3b1 FAQ: . What is
-2.3. Is there any GNU software available?
comp.sys.3b1 FAQ: . Is there any GNU software available?
-2.4. Is the X Window system available for the UNIX PC?
comp.sys.3b1 FAQ: . Is the X Window system available for the UNIX PC?
-2.5. What's MGR?
comp.sys.3b1 FAQ: . What's MGR?
-2.6. How can I get a full 360kB when I format a MS-DOS floppy on the UNIX PC?
comp.sys.3b1 FAQ: . How can I get a full 360kB when I format a MS-DOS floppy on the UNIX PC?
-2.7. Are there any other utilities for fiddling with MS-DOS floppies?
comp.sys.3b1 FAQ: . Are there any other utilities for fiddling with MS-DOS floppies?
-2.8. What commercial software was available for the UNIX PC?
comp.sys.3b1 FAQ: . What commercial software was available for the UNIX PC?

Part III: Software Development

-3.1. Can I use the GNU C compiler in place of the hard-to-find development set?
comp.sys.3b1 FAQ: . Can I use the GNU C compiler in place of the hard-to-find development set?
-3.2. What do I with old object-file archives?
comp.sys.3b1 FAQ: . What do I with old object-file archives?

Part IV: Administration

-4.1. How do I restore from a backup when one of the floppies is bad?
comp.sys.3b1 FAQ: . How do I restore from a backup when one of the floppies is bad?
-4.2. How can I make a floppy-disk-based UNIX for fsck'ing the hard drive?
comp.sys.3b1 FAQ: . How can I make a floppy-disk-based UNIX for fsck'ing the hard drive?
-4.3. How can I get the machine to ask the device and program to boot from?
comp.sys.3b1 FAQ: . How can I get the machine to ask the device and program to boot from?
-4.4. How do I get multiple login windows?
comp.sys.3b1 FAQ: . How do I get multiple login windows?
-4.5. What the heck is a +IN suffix on a file?
comp.sys.3b1 FAQ: . What the heck is a +IN suffix on a file?
-4.6. What do the HDERR (FDERR, or TPERR) messages in /usr/adm/unix.log mean?
comp.sys.3b1 FAQ: . What do the HDERR (FDERR, or TPERR) messages in /usr/adm/unix.log mean?
-4.7. Why are the header files missing after an install of the Development Set?
comp.sys.3b1 FAQ: . Why are the header files missing after an install of the Development Set?
-4.8. Why is the machine is booting over and over?
comp.sys.3b1 FAQ: . Why is the machine is booting over and over?
-4.9. Is HoneyDanBer UUCP available to replace the stock uucp software?
comp.sys.3b1 FAQ: . Is HoneyDanBer UUCP available to replace the stock uucp software?
-4.10. Why doesn't the On-Board Modem (OBM) work with some other modems?
comp.sys.3b1 FAQ: . Why doesn't the On-Board Modem (OBM) work with some other modems?
-4.11. How do I get my on-board modem to be a dial-out-only modem?
comp.sys.3b1 FAQ: . How do I get my on-board modem to be a dial-out-only modem?
-4.12. Does the on-board modem support 2400 bps?
comp.sys.3b1 FAQ: . Does the on-board modem support 2400 bps?
-4.13. Why aren't the lpadmin, accept, and reject commands working right?
comp.sys.3b1 FAQ: . Why aren't the lpadmin, accept, and reject commands working right?
-4.14. Why are all the jobs on the printer always followed by a formfeed?
comp.sys.3b1 FAQ: . Why are all the jobs on the printer always followed by a formfeed?
-4.15. Why can't I send bitmapped images to the printer correctly?
comp.sys.3b1 FAQ: . Why can't I send bitmapped images to the printer correctly?
-4.16. How do I configure a Hayes compatible external modem on the UNIX PC?
comp.sys.3b1 FAQ: . How do I configure a Hayes compatible external modem on the UNIX PC?
-4.17. Any tips on building Cnews?
comp.sys.3b1 FAQ: . Any tips on building Cnews?
-4.18. What are lipc and nipc, and how can I use nipc instead of lipc?
comp.sys.3b1 FAQ: . What are lipc and nipc, and how can I use nipc instead of lipc?

Part V: Upgrading

-5.1. What third-party hardware is available?
comp.sys.3b1 FAQ: . What third-party hardware is available?
-5.2. Can I put a 68881 math coprocessor in my machine?
comp.sys.3b1 FAQ: . Can I put a 68881 math coprocessor in my machine?
-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?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . What dynamic memory chips can be used to upgrade a 3b1/7300?
-5.5. 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?
comp.sys.3b1 FAQ: . Can I hook up a 3.5
-5.6. Can I put a larger hard disk drive in the UNIX PC?
comp.sys.3b1 FAQ: . Can I put a larger hard disk drive in the UNIX PC?

Part VI: Maintenance

-6.1. How do I park the hard disk heads before moving the machine?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . Why does my fan sometimes speed up and slow down? Should I replace it?
-6.4. Why has my clock stopped?
comp.sys.3b1 FAQ: . Why has my clock stopped?

Part VII: Failures

-7.10. How can the monitor fail?
comp.sys.3b1 FAQ: . How can the monitor fail?
-7.1. What can I do when I turn on my UNIX PC and all I see is a "green screen"?
comp.sys.3b1 FAQ: . What can I do when I turn on my UNIX PC and all I see is a
-7.2. What can I do when I turn on my UNIX PC and I have no video?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . Why does rn fail with
-7.5. Can I connect my Starlan board to an Ethernet?
comp.sys.3b1 FAQ: . Can I connect my Starlan board to an Ethernet?
-7.6. Can I run SLIP (Serial Line Internet Protocol) on my UNIX PC?
comp.sys.3b1 FAQ: . Can I run SLIP (Serial Line Internet Protocol) on my UNIX PC?
-7.7. What are the consequences of "fsck -s" (salvaging the freelist)?
comp.sys.3b1 FAQ: . What are the consequences of
-7.8. What does the "-s" option to dismount do?
comp.sys.3b1 FAQ: . What does the
-7.9. How do I identify what motherboard revision I have?
comp.sys.3b1 FAQ: . How do I identify what motherboard revision I have?

Part VIII: Mysteries

-8.1. What are the LED's left side of the machine for?
comp.sys.3b1 FAQ: . What are the LED's left side of the machine for?
-8.2. What's /etc/update? What does it do?
comp.sys.3b1 FAQ: . What's /etc/update? What does it do?
-8.3. Why did the time display at the top of the screen go away?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . 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?
comp.sys.3b1 FAQ: . What do I do when the machine hangs at the boot message?
-8.6. How can the UNIX PC be made more secure?
comp.sys.3b1 FAQ: . How can the UNIX PC be made more secure?
-8.7. How do I access the expert menus in the diagnostics?
comp.sys.3b1 FAQ: . How do I access the expert menus in the diagnostics?









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