9 May
1998
9 May
'98
8:46 p.m.
On May 9, 21:43, Pete Turnbull wrote:
Is it possible that you're mistakenly disassembling embedded data as if it
were code? And perhaps that those data items contain arrangements of byte
values which translate to FP instructions?
-brian.
---
Brian "JARAI" Chase | http://world.std.com/~bdc/ | VAXZilla LIVES!!!
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I need to make a bootable 7th Edition system disk on
an RL02...
and then thought, "I wonder if there's some easy way to tell what numbers
were used on an existing system disk, if the prototype file no longer
exists?"
--
Pete Peter Turnbull
Dept. of Computer Science
University of York
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From Brian D Chase <bdc(a)world.std.com> Sun May 10
18:17:06 1998
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From: Brian D Chase <bdc(a)world.std.com>
To: "Ed G." <edgee(a)cyberpass.net>
Cc: Greg Lehey <grog(a)lemis.com>om>, pups(a)minnie.cs.adfa.oz.au
Subject: Re: Floating Point-The Results Are In!
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On Fri, 8 May 1998, Ed G. wrote:
I'll
believe this when you pinpoint the instructions.
Your skepticism spurred me to examine a Unix utility in depth to see
whether my results hold up. They do. From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Sun
May 10 18:26:23 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199805100826.SAA02363(a)henry.cs.adfa.oz.au>
Subject: Re: mkfs on an RL02
To: pete(a)dunnington.u-net.com
Date: Sun, 10 May 1998 18:26:23 +1000 (EST)
Cc: pups(a)minnie.cs.adfa.oz.au
In-Reply-To: <9805092143.ZM1440(a)indy.dunnington.york.ac.uk> from Pete Turnbull at
"May 9, 98 08:43:26 pm"
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In article by Pete Turnbull:
I'm looking for some advice...
For the first time in umpteen years, I need to make a bootable 7th Edition
system disk on an RL02 that previously had some other O/S on it. This disk
has to have the swap space, as well. The machine it will be used on has
256K bytes RAM.
How many blocks should I leave for swap? Or, to put it another way, what
magic number pair would people suggest I put in the prototype file for the
number of blocks and number of inodes?
The best & only answer here is to consult to xxconf file used to generate
the 7th Edition kernel, as this will tell you how much swap to reserve.
Vanilla V7 didn't come with RL02 support, so all I can give you are the
parameters used for the RL02 images I have here with V7:
rl
tm
root rl 0
swap rl 0
swplo 18000
nswap 2480
In other words, the filesystem should be no bigger than 18,000 blocks.
The mkfs manual says:
If the prototype file cannot be opened and its name con-
sists of a string of digits, mkfs builds a file system
with a single empty directory on it. The size of the file
system is the value of proto interpreted as a decimal num-
ber. The number of i-nodes is calculated as a function of
the filsystem size. The boot program is left uninitial-
ized.
Distribution V7 had roughly 2,600 files & directories. If I had to
set a value, I'd choose 5,000 or so.
Hope this helps,
Warren
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From Warren Toomey <wkt(a)henry.cs.adfa.oz.au> Sun
May 10 18:27:43 1998
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From: Warren Toomey <wkt(a)henry.cs.adfa.oz.au>
Message-Id: <199805100827.SAA02382(a)henry.cs.adfa.oz.au>
Subject: Re: mkfs on an RL02
To: pete(a)dunnington.u-net.com
Date: Sun, 10 May 1998 18:27:43 +1000 (EST)
Cc: pups(a)minnie.cs.adfa.oz.au (PDP Unix Preservation)
In-Reply-To: <9805092146.ZM1447(a)indy.dunnington.york.ac.uk> from Pete Turnbull at
"May 9, 98 08:46:36 pm"
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In article by Pete Turnbull:
> On May 9, 21:43, Pete Turnbull wrote:
> I need to make a bootable 7th Edition system disk on
an RL02...
>
> and then thought, "I wonder if there's some easy way to tell what numbers
> were used on an existing system disk, if the prototype file no longer
> exists?"
You'd have to disassemble the kernel. Alternatively, consult the
size of the free block list on the disk's image.
Warren
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