Difference between revisions of "4.1 BSD"

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(added info on the 1981 tape I found on bitsavers)
(move my notes into a dedicated tutorial page.)
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== Getting this to run ==
 
== Getting this to run ==
 
=== 4.1 ===
 
=== 4.1 ===
A tape image for 4.1 has surfaced on [[bitsavers]], named [http://bitsavers.trailing-edge.com/bits/UCB_CSRG/4.1_BSD_19810710.zip 4.1_BSD_19810710.zip]  The bootblock programs do not run under SIMH using the [[4.0 BSD]] strategy, however it is possible to swap tapes when restoring the root slice, and then restoring the tars.
+
A tape image for 4.1 has surfaced on [[bitsavers]], named [http://bitsavers.trailing-edge.com/bits/UCB_CSRG/4.1_BSD_19810710.zip 4.1_BSD_19810710.zip]  The bootblock programs do not run under SIMH using the [[4.0 BSD]] strategy, however it is possible to swap tapes when restoring the root slice, and then restoring the tars.  Using this modified tape, I've created an installation guide [Installing 4.1 BSD on SIMH].
  
My simplified notes are:
 
<pre>
 
mkfs /dev/hp0g 145673
 
cd /dev
 
MAKE ht0
 
mount /dev/hp0g /usr
 
cd /usr
 
mt rew
 
mt fsf
 
mt fsf
 
tar -xvf /dev/rmt0
 
 
 
dd if=/usr/mdec/uboot of=/dev/rhp0a bs=1b count=1
 
 
cp /etc/fstab.rp06 /etc/fstab</pre>
 
 
with a bootlog of:
 
 
<pre>
 
VAX 11/780 simulator V4.0-0 Beta        git commit id: b8049645
 
 
Boot
 
: hp(0,0)vmunix
 
123060+27528+24628 start 0xF5C
 
Berkeley VAX/UNIX Version 4.9  Wed Feb 17 15:27:46 PST 1982
 
real mem  = 8322048
 
avail mem = 7738368
 
mcr0 at tr1
 
mcr1 at tr2
 
uba0 at tr3
 
dz0 at uba0 csr 160100 vec 300, ipl 15
 
mba0 at tr8
 
hp0 at mba0 drive 0
 
hp1 at mba0 drive 1
 
hp2 at mba0 drive 2
 
hp3 at mba0 drive 3
 
mba1 at tr9
 
ht0 at mba1 drive 0
 
tu0 at ht0 slave 0
 
tu1 at ht0 slave 1
 
root on hp0
 
WARNING: clock lost 153 days -- CHECK AND RESET THE DATE!
 
WARNING: should run interleaved swap with >= 2Mb
 
Automatic reboot in progress...
 
Sun Feb  1 18:35:49 GMT 1976
 
/dev/hp0a: 676 files 4278 blocks 3345 free
 
/dev/rhp0g: 6042 files 33710 blocks 107868 free
 
Sun Feb  1 18:35:49 GMT 1976
 
Mounted /usr on /dev/hp0g
 
preserving editor files
 
clearing /tmp
 
starting daemons: update cron accounting network mail printer.
 
Sun Feb  1 18:35:49 GMT 1976
 
 
 
Berkeley 4.1 VAX/UNIX (Amnesia-Vax)
 
 
login:</pre>
 
  
 
=== 4.1c ===
 
=== 4.1c ===
 
This version includes the Bill Joy TCP/IP implementation.
 
This version includes the Bill Joy TCP/IP implementation.
 
  
 
== Games ==
 
== Games ==

Revision as of 06:35, 2 February 2016


4.1 BSD
41bsd.png
Logging into a 4.1 BSD system
Type: Multitasking, multiuser
Creator: CSRG
Architecture: VAX, theoretically portable
Current Version: 4.1 (1981)
Year Introduced: 1981


This version addressed many of the performance shortcomings in 4.0 BSD that were brought up in a VMS vs BSD paper. Many of the changes are outlined in Bug fixes and changes in 4.1bsd.

Other features included:

  • job control
  • automatic kernel config
  • vfork()

4.1 was largely a debug version with several interm releases. There is a known 4.1, 4.1a and 4.1c release, and possibly others.

Getting this to run

4.1

A tape image for 4.1 has surfaced on bitsavers, named 4.1_BSD_19810710.zip The bootblock programs do not run under SIMH using the 4.0 BSD strategy, however it is possible to swap tapes when restoring the root slice, and then restoring the tars. Using this modified tape, I've created an installation guide [Installing 4.1 BSD on SIMH].


4.1c

This version includes the Bill Joy TCP/IP implementation.

Games

These are what is available on the 1981 tape:

aardvark    banner      ching       lib         snake
adventure   bcd         cribbage    mille       snscore
advfiles    bogdict     fish        monop       trek
arithmetic  boggle      fortune     number      wump
backgammon  chess       hangman     quiz        zork

Documents

Bug fixes and changes in 4.1 BSD