6 Apr
1998
6 Apr
'98
1:44 a.m.
On Apr 6, 9:15, Greg Lehey wrote:
Hmm. That's a big difference in favour of Begemot.
>
On Fri, 3 April 1998 at 12:17:19 +0000, Pete Turnbull
wrote:
I don't want to clutter everyone's mailbox with a 32K file, so I've put it
on
http://www.dunnington.u-net.com/public/dhrystone.c
and anyone who wants can grab it from there. If there's any problem accessing
that page from that server, please do two things:
1) tell me! so I can complain, and
2) try http://www.personal.u-net.com/~dunnington/public/dhrystone.c
or http://www.dunnington.u-net.com/ and follow the "no intel" link :-)
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
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I don't have numbers for anything running
under the emulator, but I do have
Dhrystone sources (and some figures for real PDP-11s of various sorts with
various operating systems and compilers). If anyone wants to try it, I can
post the source.
I'd be interested. From "Steven M. Schultz"
<sms(a)moe.2bsd.com> Mon Apr 6 14:25:26 1998
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From: "Steven M. Schultz" <sms(a)moe.2bsd.com>
Message-Id: <199804060425.VAA11498(a)moe.2bsd.com>
To: grog(a)lemis.com, pups(a)minnie.cs.adfa.oz.au, shoppa(a)alph02.triumf.ca,
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Subject: Re: Bug in Bob Supnik's Emulator!
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From: Greg Lehey <grog(a)lemis.com>
I don't know which directories you compiled, but here are the results
on a K6/233 running FreeBSD 3.0 and the Begemot emulator:
/usr/src/lib/c2 39.4 real 30.5 user
8.4 sys
/usr/src/lib/ccom 223.6 real 186.9 user 36.2 sys
I just compiled the 'ccom' directory (the C compiler itself) and not
the optimizer or preprocessor
date(1) showed times consistent with time(1).
Interesting! So P11's time/clock handling is doing the right/expected
thing.
I'd give P11 a try but it's refusing to configure and build at the
moment. Also the version (2.0) in the archive is about 4 years old
and only (from the looks of it) supports RL02 disks. I've a nice
RP06 image built using Bob's emulator that I could "boot up" if
P11 handled 'SMD' (i.e 'xp') disks.
Steven
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From Greg Lehey <grog(a)lemis.com> Mon Apr 6
14:38:00 1998
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From: Greg Lehey <grog(a)lemis.com>
To: "Steven M. Schultz" <sms(a)moe.2bsd.com>
Cc: PDP UNIX Preservation Society <pups(a)minnie.cs.adfa.oz.au>
Subject: Re: Bug in Bob Supnik's Emulator!
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On Sun, 5 April 1998 at 21:25:26 -0700, Steven M. Schultz wrote:
From: Greg
Lehey <grog(a)lemis.com>
I don't know which directories you compiled, but here are the results
on a K6/233 running FreeBSD 3.0 and the Begemot emulator:
/usr/src/lib/c2 39.4 real 30.5
user 8.4 sys
/usr/src/lib/ccom 223.6 real 186.9 user 36.2 sys
I just compiled the 'ccom' directory (the C compiler itself) and not
the optimizer or preprocessor date(1) showed times consistent with time(1).
>
> Interesting! So P11's time/clock handling is doing the right/expected
> thing.
It's not 100% accurate. On my machine, it loses a few minutes a day.
But all the numbers add up, and it didn't lose noticably more time
during the build.
I'd give P11 a try but it's refusing to
configure and build at the
moment. Also the version (2.0) in the archive is about 4 years old
and only (from the looks of it) supports RL02 disks. I've a nice
RP06 image built using Bob's emulator that I could "boot up" if
P11 handled 'SMD' (i.e 'xp') disks.
I'll put some stuff together. I've exchanged some mail on the
subjecte today with J�rg Micheel, one of the authors. Hartmut Brandt,
the other, is in Germany and thus probably sleeping. The version I
have him includes images for 2.11BSD, which I can't give to anybody,
though I suppose we can make an exception in your case :-) I'll see
what I can put together.
Greg
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From Bob Supnik <Bob.Supnik(a)digital.com> Tue Apr
7 07:25:57 1998
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From: Bob Supnik <Bob.Supnik(a)digital.com>
To: pups(a)minnie.cs.adfa.oz.au
Subject: RE: Bug in Bob Supnik's Emulator?
Date: Mon, 6 Apr 1998 17:25:57 -0400
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There is indeed a bug in the floating point emulator: MODf was setting
the condition codes off the integer result, not the fractional result.
To fix the bug, look for this code fragment in source module pdp11_fp.c
case 3: /* MODf */
ReadFP (&fsrc, GeteaFP (dstspec, lenf), dstspec, lenf);
F_LOAD (qdouble, FR[ac], fac);
newV = modfp11 (&fac, &fsrc, &modfrac);
F_STORE (qdouble, fac, FR[ac | 1]);
F_STORE (qdouble, modfrac, FR[ac]);
==> FPS = setfcc (FPS, fac.h, newV);
break;
Change the indicated code line to be:
==> FPS = setfcc (FPS, modfrac.h, newV);
and recompile.
Thanks to Warren Toomey for getting me the source to FACTOR, which
showed the bug.
(I can't believe this is the problem with vi, but who knows? A bug in
MODf could affect the binary to decimal conversion routines in the run
time libraries.)
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From "Steven M. Schultz"
<sms(a)moe.2bsd.com> Tue Apr 7 08:03:34 1998
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To: Bob.Supnik(a)digital.com
Subject: modf
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Bob -
Change the indicated code line to be:
==> FPS = setfcc (FPS, modfrac.h, newV);
and recompile.
Thanks to Warren Toomey for getting me the source to FACTOR, which
showed the bug.
The 'primes' program also uses 'modf' so it might encounter the same
problem as FACTOR.
(I can't believe this is the problem with vi, but
who knows? A bug in
MODf could affect the binary to decimal conversion routines in the runtime
'modf' is used in the runtime routines which compute 'long' (and
unsigned long) remainders. So if 'vi' is doing something like
"long % X" or "unsigned long % X" it's possible (likely) that
it's
getting a wrong answer and becoming extremely confused.
I'll check this later tonight.
Steven
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From "David C. Jenner"
<djenner(a)halcyon.com> Tue Apr 7 08:58:38 1998
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Subject: License AU-1 arrives!
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I don't know if this is the first posting, but it sure is the first
license: AU-1!
Now, to do something with it.
Dave
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Tue
Apr 7 09:56:31 1998
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Subject: Re: License AU-1 arrives!
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In article by David C. Jenner:
I don't know if this is the first posting, but it
sure is the first
license: AU-1!
Now, to do something with it.
Dave
You swine Dave, you beat us all! Congratulations. Once I hear from
Dion, you'll get access to the archive.
Warren
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From "David C. Jenner"
<djenner(a)halcyon.com> Tue Apr 7 10:05:21 1998
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Well, I agree. I really shouldn't have been first. Probably you,
Warren, should have been an "honorary" first, for all the effort you put
into it.
But, look at it this way. Notice that the licenses are all "AU-#". We
are all paying homage to "au" for bring this about.
Dave
Warren Toomey wrote:
In article by David C. Jenner:
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I don't know if this is the first posting,
but it sure is the first
license: AU-1!
Now, to do something with it.
Dave
You swine Dave, you beat us all! Congratulations. Once I hear from
Dion, you'll get access to the archive.
Warren From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Tue
Apr 7 10:09:43 1998
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Subject: Re: License AU-1 arrives!
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"Apr 6, 98 05:05:21 pm"
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In article by David C. Jenner:
Well, I agree. I really shouldn't have been
first. Probably you,
Warren, should have been an "honorary" first, for all the effort you put
into it.
But, look at it this way. Notice that the licenses are all "AU-#". We
are all paying homage to "au" for bring this about.
Dave
I don't think the licensing section in San Francisco knows me from Adam.
I asked Dion if AU stood for Ancient Unix, Australia or both :-)
I'm so glad at least two people have got licenses (Charles Retter too).
It sets a legal precedent, in case SCO ever change their mind.
Warren
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From John Holden
<johnh(a)psychvax.psych.usyd.edu.au> Tue Apr 7 10:35:46 1998
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Perhaps we should ask SCO to issue licence AU-0 to Warren, in keeping
with his work on maintaining interest in old versions of Unix and we all
know that computer programmers start counting from zero!
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From "Ed G." <edgee(a)cyberpass.net> Tue
Apr 7 10:42:54 1998
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From: "Ed G." <edgee(a)cyberpass.net>
To: pups(a)minnie.cs.adfa.oz.au, Bob Supnik <Bob.Supnik(a)digital.com>
Date: Mon, 6 Apr 1998 20:42:54 -0400
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Subject: Mag Tape Bug in Bob's Emulator?
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Is this another bug? What do you all think?
Ed G.
sim> att tm0 emutar.tap
TM: creating new file
sim> cont
ta: not found
# tar cvf /dev/rmt0 mysqrt.c
a mysqrt.c 1 blocks
# cd tmp
# tar vxf /dev/rmt0
x mysqrt.c, 383 bytes, 1 tape blocks
x mysqrt.c, 383 bytes, 1 tape blocks
x mysqrt.c, 383 bytes, 1 tape blocks
x mysqrt.c, 383 bytes, 1 tape blocks
x mysqrt.c, 383 bytes, 1 tape blocks
x mysqrt.c, 383 bytes, 1 tape blocks
...etc.
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From: "Ed G." <edgee(a)cyberpass.net>
To: pups(a)minnie.cs.adfa.oz.au, Bob Supnik <Bob.Supnik(a)digital.com>
Date: Mon, 6 Apr 1998 20:42:54 -0400
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Subject: Floating Point Bug in Bob's Emulator
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I wrote a little square root program in "C" to test the floating
point in Bob Supnik's emulator (see attached code). The program
works fine under Linux, but bombs on Bob's emulator, confirming
people's theory that the emulator has a floating point bug.
I used Newton's method for the algorithm and only uses add,
subtract, multiply and divide. The emulator produced identical
incorrect results for two different versions of the program one using
floats, the other doubles.
Here's what the program does on Bob Supnik's emulator:
# cc mysqrt.c
# a.out
Initial guess: 85070586659632214000000000000000000000.0000000000000000
guess: 1.0000000000000000
guess: 85070586659632214000000000000000000000.0000000000000000
guess: 1.0000000000000000
guess: 85070586659632214000000000000000000000.0000000000000000
guess: 1.0000000000000000
guess: 85070586659632214000000000000000000000.0000000000000000
guess: 1.0000000000000000
Here's what the program does on Linux:
[root@oskar uv7]# gcc mysqrt.c
[root@oskar uv7]# a.out
Initial guess: 1.0000000000000000
guess: 1.5000000000000000
guess: 1.4166666666666667
guess: 1.4142156862745099
guess: 1.4142135623746899
My square root is: 1.4142135623746899
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File: MYSQRT.C
Date: 6 Apr 1998, 23:50
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From "Ed G." <edgee(a)cyberpass.net> Tue
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From: "Ed G." <edgee(a)cyberpass.net>
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Date: Mon, 6 Apr 1998 20:42:54 -0400
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Subject: Floating Point-How Important to Unix?
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Curious about how heavily uv7 relies on floating point?
I was. I wrote a little program to count the occurences of op code
'17' (the prefix for all PDP-11 floating point op codes) in Unix
executables. It would seem from my results that Unix relies rather
heavily on floating point.
Are my results in error?
Here's what I found in the bin directory:
awk 2540
refer 1644
xsend 1326
tbl 1315
graph 1300
xget 1288
adb 1152
eqn 918
enroll 915
neqn 874
nroff 841
make 822
spline 812
yacc 789
sa 714
tar 706
lex 628
tek 618
prof 608
t300s 604
dc 601
vplot 582
iostat 579
t300 576
t450 574
em 530
bc 509
ratfor 474
quot 452
tsort 407
sh 381
expr 380
units 379
ac 365
sort 358
ps 327
restor 323
rmail 321
ptx 320
egrep 313
ls 310
ps.old 306
m4 304
random 298
su 296
tp 285
ops 282
diff 277
pr 275
sed 267
dump 261
deroff 255
icheck 251
ls.11 249
ld 246
login 240
cptree 230
passwd 227
login.old 218
cc 210
prep 205
at 203
dumpdir 197
join 196
wc 193
tc 192
nm 191
pstat 190
file 187
pr.old 186
crypt 182
date 181
grep 180
ranlib 174
fgrep 172
ncheck 159
checkeq 157
du 155
who 152
od 151
roff 149
ar 146
vpr 144
tk 141
time 139
rm 138
mv 134
newgrp 133
factor 132
write 125
primes 124
cmp 121
dfOLD 120
size 117
v6sh 116
vcopy 113
col 110
ln 106
sum 105
clri 104
tail 103
sleep 101
stty 98
touch 96
tty 91
split 90
uniq 89
rev 86
chown 84
kill 83
yes 79
tr 58
sp 57
test 53
basename 34
tee 24
echo 4
sync 2
u3b2 0
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Tue
Apr 7 10:46:42 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199804070046.KAA00659(a)henry.cs.adfa.oz.au>
Subject: Re: License AU-1 arrives!
To: johnh(a)psychvax.psych.usyd.edu.au (John Holden)
Date: Tue, 7 Apr 1998 10:46:42 +1000 (EST)
Cc: pups(a)minnie.cs.adfa.oz.au
In-Reply-To: <199804070035.KAA11206(a)psychvax.psych.usyd.edu.au> from John Holden at
"Apr 7, 98 10:35:46 am"
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In article by John Holden:
Perhaps we should ask SCO to issue licence AU-0 to
Warren, in keeping
with his work on maintaining interest in old versions of Unix and we all
know that computer programmers start counting from zero!
I like that :-) and will pass it on to Dion. I think mine's in the mail
already, though. And of course I'm away for Easter, so it'll sit forlorn
in my mail box until Tuesday next week.
For those people interested in the PUP Archive, once their license arrives.
It is still changing (growing), as we get stuff. We plan to do a `freeze'
of material around the end of April, and cut a CD image then.
Anybody who wants a CD copy will get this CD image. The archive will diverge
from the CD of course, but I will be providing ftp access. We don't want to
create new images more than once or twice a year. You will need to pay the
volunteers to burn and mail you a CD.
Cheers,
Warren
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Tue
Apr 7 10:51:05 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199804070051.KAA00727(a)henry.cs.adfa.oz.au>
Subject: Re: Mag Tape Bug in Bob's Emulator?
To: edgee(a)cyberpass.net
Date: Tue, 7 Apr 1998 10:51:05 +1000 (EST)
Cc: pups(a)minnie.cs.adfa.oz.au (PDP Unix Preservation)
In-Reply-To: <199804070042.UAA07206(a)renoir.op.net> from "Ed G." at
"Apr 6, 98 08:42:54 pm"
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In article by Ed G.:
Is this another bug? What do you all think?
Is your tape just a raw format tape, or are you using the 32-bit
preamble/postambles to indicate the record/block sizes?
Read the tail-end of simh_doc.txt for details.
Warren
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From Greg Lehey <grog(a)lemis.com> Tue Apr 7
14:21:15 1998
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Subject: Re: License AU-1 arrives!
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On Tue, 7 April 1998 at 10:46:42 +1000, Warren Toomey wrote:
In article by John Holden:
Anybody who gets a tape from me will get the latest version. The same
will probably apply to CDs if I ever get round to installing a burner.
Greg
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Perhaps we should ask SCO to issue licence AU-0
to Warren, in keeping
with his work on maintaining interest in old versions of Unix and we all
know that computer programmers start counting from zero!
I like that :-) and will pass it on to Dion. I think mine's in the mail
already, though. And of course I'm away for Easter, so it'll sit forlorn
in my mail box until Tuesday next week.
For those people interested in the PUP Archive, once their license arrives.
It is still changing (growing), as we get stuff. We plan to do a `freeze'
of material around the end of April, and cut a CD image then.
Anybody who wants a CD copy will get this CD image. The archive will diverge
from the CD of course, but I will be providing ftp access. We don't want to
create new images more than once or twice a year. You will need to pay the
volunteers to burn and mail you a CD. From Greg Lehey <grog(a)lemis.com> Tue Apr 7
14:23:13 1998
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From: Greg Lehey <grog(a)lemis.com>
To: edgee(a)cyberpass.net, pups(a)minnie.cs.adfa.oz.au
Subject: Re: Floating Point-How Important to Unix?
References: <199804070043.UAA07210(a)renoir.op.net>
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On Mon, 6 April 1998 at 20:42:54 -0400, Ed G. wrote:
Curious about how heavily uv7 relies on floating
point?
I was. I wrote a little program to count the occurences of op code
'17' (the prefix for all PDP-11 floating point op codes) in Unix
executables. It would seem from my results that Unix relies rather
heavily on floating point.
Are my results in error?
How did you recognize the instructions words? Just because it's in
the text segment doesn't mean it's instructions.
Greg
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Tue
Apr 7 15:51:21 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199804070551.PAA01173(a)henry.cs.adfa.oz.au>
Subject: Receipt of 12 License Details
To: pups(a)minnie.cs.adfa.oz.au (PDP Unix Preservation)
Date: Tue, 7 Apr 1998 15:51:21 +1000 (EST)
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All,
I have the list of the first 12 SCO AU license holders in front of
me. Unfortunately, I'm not one of them :-( Anyway, things are humming along.
Charles, David, Doug, Ed, James, Jennine, John, Jorgen, Ken, Matthias,
Paul P, Paul V, Steven
Cheers,
Warren
P.S Matthias has the most interesting number, AU-3B 8-)
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pete＠dunnington.u-net.com