HDTenEightyP/NetNews huggingface dataset:
From: djk@bby.com.au (David James Keegel)
Subject: Re: Executing compressed .EXE files? Is it possible?
Organization: Burdett, Buckeridge & Young, Melbourne, Australia
Distribution: aus
Date: Fri, 16 Oct 1992 06:45:12 GMT

ddavidso@metz.une.edu.au (Dean Davidson) writes:

] Of course it is for real.  Why do you find this so suprising?

] LZEXE, PKLITE and their equivalents do compression of the .EXE file
] and then add code at the beginning to uncompress the original .EXE
] The only penalty is that the load time of the program is longer
] due to uncompression having to be done first.

Don't forget that a compressed .EXE file will take less time to transfer
off disk into RAM, because it takes up less disk blocks.  Whether it is
actually going to be faster or slower depends on :-
	(*) how much the code is compressed (compression ratio)
	(*) how much is added to the .exe to do uncompression
	(*) how fast the uncompression is
	(*) how fast the disk is (in particular the transfer speed)
	(*) the degree of disk fragmentation when the .exe was written.

If they have fast, small uncompression code which does a reasonable job,
it's possible that it would be *faster* to load the compressed .exe.

-- 
+----------------------------------------------------------------------------+
| David Keegel   <djk@bby.com.au>   Ph: +61 3 614-8922   Fax: +61 3 614-8742 |
+----------------------------------------------------------------------------+
Newsgroups: aus.computers.ibm-pc
From: hui@apaturia.trl.OZ.AU (Alvaro Hui)
Subject: Re: SX and DX ? 386 and 486 ?
Organization: Telecom Research Labs, Melbourne, Australia
Distribution: aus
Date: Tue, 13 Oct 1992 03:17:30 GMT

u906271@bruny.cc.utas.edu.au (H G Chew) writes:

>guac@brt.deakin.edu.au writes:

>>I'm confused by systems : 386SX, 386DX, 486SX and 486DX.

How about DX2, DX+OverDrive...Both seems to use clock
"doubling" technology!

Computer buyer be cautious!

Alvaro,
a.hui@trl.oz.au
------------------------------------------------------------------
Alvaro HUI
a.hui@trl.oz.au
Synchronous Network Research
TeleCom Research Labortaries Australia.
==================================================================
2M->VC12->TU12->TUG2->TUG3->VC4->STM-1(AU-1);
140M->VC4->STM-1(AU-1)
==================================================================
Newsgroups: aus.computers.ibm-pc
From: vthrc@mailbox.uq.oz.au
Subject: Re: Reading Mac disks in PC?
Organization: Vision, Touch & Hearing Research Centre
Date: Wed, 14 Oct 1992 10:39:12 GMT

Roderick Nasir DAVID (ruffus@tartarus.uwa.edu.au) writes:
>
>	Or you could use a prog for the mac called Access PC 
>	for the Mac.This is really good as It reads Ibm as a mac    
>	disk and it also reads 1.44 and 720k disks with no hassles.
>	The best thing is its shareware!.

Is that why it is *sold* commercially? Maybe ruffus is talking about a
different bit of software, but to quote from my v1.1 AccessPC manual page vii
"The software described in this document is furnished under a license agreement
or non-disclosure agreement. It is against the law to copy the software on any
medium except as specifically allowed in the license or non-disclosure
agreement... [stereotypical legalese omitted]"

I certainly recommend the program. It was developed by the authors of SoftPC
and the technology was licensed to Apple for there recently-announced
equivalent but the licence agreement makes it rather difficult to distribute it
as shareware.

cheers,
X500: @c=AU [I'm about to update VTHRC entries, soon...]
       @o=University of Queensland
        @ou=Physiology and Pharmacology Department
         @ou=Vision Touch and Hearing
          @cn=Danny Thomas
           @rfc822Mailbox=vthrc@cc.uq.oz.au

Newsgroups: aus.computers.ibm-pc
From: ins480w@lindblat.cc.monash.edu.au (Kim Oldfield)
Subject: Re: Executing compressed .EXE files? Is it possible?
Organization: Monash University
X-Newsreader: TIN [version 1.1 PL6]
Distribution: aus
Date: Fri, 16 Oct 1992 02:20:14 GMT

Dean Davidson (ddavidso@metz.une.edu.au) wrote:
] 
] LZEXE, PKLITE and their equivalents do compression of the .EXE file
] and then add code at the beginning to uncompress the original .EXE
] The only penalty is that the load time of the program is longer
] due to uncompression having to be done first.
] 
This is not always the case, it depends on what disk type and computer speed.
I have found that when running a program off a floppy disk, that the load
time is decreased, as less disk access has to be done.
--
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-#
|       Kim Oldfield                  |   "Reality, what  |
# email kim@yoyo.cc.monash.edu.au     #   concept."       #
| or ins480w@aurora.cc.monash.edu.au  |   Robin Williams  |
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-#
I am a .sig file virus, please copy me into you .sig file.
Newsgroups: aus.computers.ibm-pc
From: markw@cltr.uq.oz.au (Mark White)
Subject: Question RE HDD type?
Organization: Centre for Language Teaching and Research, Uni of Queensland, AUSTRALIA.
Distribution: aus
Date: Wed, 7 Oct 1992 22:43:01 GMT

I have a 386SX that I seriously want to upgrade/sell.  It does, however
have a 120 (or therabouts) MB Hard Disk Drive, which would be adequate
storage space for a new PC.

It's a Seagate ST114A, and it plugs directly onto the motherboard.
My question is this-- what sort of controller can I assume that it is?
I would like to buy one of these super-cheap 486's, with just a simple,
small HDD and swap them around, and sell the SX (with the smaller HDD)
for anything I can get for it.  But I need to know aht sort of controller/
drive combination I need on the new PC to ensure their compatibility.

Can anyone help?  Please?

Mark

P.S.  Oh, if it helps, the PC is a Hyundai 386S.......
--
Mark White                                        | 
National Centre for Studies in Travel and Tourism | EMail: markw@cltr.uq.oz.au
James Cook University of North Queensland         | Fax:   +61 7 371 8485
P.O. Box 705 Indooroopilly QLD 4068  AUSTRALIA    | Phone: +61 7 870 9212
From: ardtlong@adam.adelaide.edu.au (Dale T. Long)
Newsgroups: aus.computers.ibm-pc
Subject: IRQ questions.
Date: 7 Oct 92 06:27:24 GMT
Organization: The University of Adelaide
NNTP-Posting-Host: adam.adelaide.edu.au


On examining my system (a HT12A (286) based machine) I was given the following
results. I used two programs; QA Plus and MSD (Microsoft's, of course).

IRQ     QA Plus                 MSD
-----------------------------------------------------
0       Timer                   Timer
1       Keyboard                Keyboard
2       [Cascade]               Second 8259A  (through the BIOS)
3       COM2                    COM2
4       COM1                    COM1
5       available               LPT2  (not installed)
6       Floppy Disk             Floppy Disk
7       LPT1                    LPT1
8       Clock/Calendar          Clock/Calendar
9       available               Redirected IRQ 2
10      available               reserved
11      available               reserved
12      available               reserved
13      reserved                reserved  (for co-processor)
14      Fixed Disk              Fixed Disk
15      available               reserved

I would like to know what the [cascade] of IRQ2 means and why MSD shows it as
a 'second 8259A'. As well as why MSD shows IRQ9 as being a redirected IRQ2.
What does this all mean? Why is it redirected? Is this something all 286
achines have or is it something particular to my machine (HT12A)?
What tricks does an 8259A do?

Dale Long.
ardtlong@adam.adelaide.edu.au
From: ddavidso@metz.une.edu.au (Dean Davidson)
Newsgroups: aus.computers.ibm-pc
Subject: Re: Executing compressed .EXE files? Is it possible?
Date: 15 Oct 92 22:43:45 GMT
Distribution: aus
Organization: University of New England, Armidale, Australia

In article <1992Oct13.234437.25513@mailhost.ocs.mq.edu.au> johns@macadam.mpce.mq.edu.au (John Savage) writes:
>
>The latest catalog from SELTEC ( a shareware company now located in Gosford),
>lists a compression program:

Also available on archie.au of course, with none of the cost of buying it
from SELTEC!

>
>      LZE/LZESHELL: a public domain program, compresses an (sic) .EXE file
>      to almost half its size!  This isn't compression that must be 
>      decompressed to use the file; this is compression of the code, so 
>      the program can be used as is.
>
>Is this for real??  (BTW, it is not an April edition of the catalog.)

Of course it is for real.  Why do you find this so suprising?

LZEXE, PKLITE and their equivalents do compression of the .EXE file
and then add code at the beginning to uncompress the original .EXE
The only penalty is that the load time of the program is longer
due to uncompression having to be done first.

Hope this helps

-- 
Dean Davidson                                 ddavidso@metz.une.oz.au
Dept Psychology                               Phone 61 67 73 2585
University of New England                     Fax   61 67 72 9816
Armidale NSW 2351 Australia                   VK2 ZID
From: 11437294@eng2.eng.monash.edu.au (NATHAN WHEAT)
Newsgroups: aus.computers.ibm-pc
Subject: Mac LC for sale (Melbourne)
Keywords: mac lc sale melbourne
Date: 11 Oct 92 21:51:12 GMT
Organization: Faculty of Engineering, Monash University

For those interested:

	Mac LC
	4MB RAM
	40MB Hard Disk
	Superdrive
	14" colour monitor (256 colours, 640*480)
	512k VRAM
	maths-coprocessor
	System 7.0/tuneup

Includes SoftPC, IBM emulator, for free.  Has all manuals, cables and etc.

Asking for $2800, please send offers to address above.

Nathan.
From: s915074@otto (Vitor TEN)
Newsgroups: aus.computers.ibm-pc
Subject: sorcery 101
Date: 11 Oct 92 23:52:01 GMT
Organization: RMIT Computer Centre
NNTP-Posting-Host: otto.bf.rmit.oz.au

HELP!!!!!!

the university has just been deserted and I don't know how to escape

Thanks in advance.
s915074@otto.bf.rmit.oz.au
Newsgroups: aus.computers.ibm-pc
From: eepjm@wombat.newcastle.edu.au (Peter Moylan)
Subject: Re: SX and DX ? 386 and 486 ?
Organization: University of Newcastle, AUSTRALIA
Date: Tue, 13 Oct 1992 04:53:27 GMT

In article <1992Oct12.111258.8155@brt.deakin.edu.au>, guac@brt.deakin.edu.au writes:
> 
> I'm confused by systems : 386SX, 386DX, 486SX and 486DX.

The problem lies in the word "systems".  The numbers mentioned here
refer to processor chips, not systems.

> I was told the difference between SX and DX is a math-coprocessor, that is the
> SX does not have the math coprocessor but DX has.

Correct.

>                                                 However I found my friend's
> 486SX-33 has a math-coprocessor when I use Norton to check.

Your friend probably has a 486SX-33 processor - which does not include
a coprocessor - together with a *separate* coprocessor chip.

If you buy an 8086, a 186, a 286, etc., then in addition to the
processor chip you have to buy a coprocessor (assuming you want one -
and it turns out that most people do, because the alternative is
slow software emulation of floating point operations).  Likewise
if you buy a 386SX or a 486SX you're stuck with having to buy a
coprocessor, because sooner or later you discover that your system is
too slow without one.  If, on the other hand, you buy the DX versions
then you don't need a coprocessor, because a coprocessor is built in
to the processor chip.

-- 
Peter Moylan                      eepjm@wombat.newcastle.edu.au
From: cej@dstos3.dsto.gov.au
Newsgroups: aus.computers.ibm-pc
Subject: Re: DOS 5 and Drive Manager
Date: 9 Oct 92 18:38:37 GMT
Organization: Defence Science and Technology Organisation

In article <1992Oct6.231545.6187@g2syd.genasys.com.au>, simonr@g2syd.genasys.com.au (Simon Rivett) writes:
> I have been running DOS3.3 on a 286 (4Mb memory) for yonks and decided
> (finally) to upgrade to DOS 5.0.  I have a 300Mb Seagate drive partitioned
> as C: to H: drives, and hence have Drive Manager's dmdrvr.bin as a driver
> in my config.sys file.
>
> When I attempted the upgrade, it would hang when it came to load dmdrvr.bin
> in the config.sys file, regardless where it sat in the file (at the top, or
> end, etc).  Dead end.

Well we have DM 5.10, and it works with DOS 5 fine.If you have this version,
I would suggest:
1)Backup
2)Boot DOS 5 on floppy
3)Use fdisk to erase all your partitions (copy down those params for reference)
4)Run DM to create a large partition OR just use DOS 5's fdisk to create a
  single DOS partition (if your CMOS has the drive type or a modifiable type 47)
  (Otherwise DM is required & will produce two partitions.)
5) Copy over all the other DOS files (unpack as required)
6) Restore all the other files..
Note:Your DOS distribution disk can go to the DOS prompt if you quit from the
install prog at it's start.
Good luck...

--
Chris Jones                                  E-mail: cej@dstos3.dsto.gov.au
CSS/CD/ERL                                    Phone: +61 8 259 6758
DSTO Salisbury, South Australia                 Fax: +61 8 259 6328

Disclaimer: The opinions expressed are purely personal and do NOT represent
            the official view of DSTO.

"I'm going to put the shame file in the sludge file!  Or is that the sludge
 file in the shame file? Shame, sludge, sludge, shame, ...
 That's life, get nicked.."   Derrin Hunch, Fast Forward
From: guac@brt.deakin.edu.au
Newsgroups: aus.computers.ibm-pc
Subject: More Qs about SX ?
Date: 13 Oct 92 18:45:44 GMT
Organization: Deakin University, Melbourne

Hi netters,

Thanks for so many replies !

So the 486SX doesn't have a math-coprocessor build in,(I assume the Norton
does work properly this time.) but I couldn't find a socket on the mainboard
to put in an optional math-coprocessor(80487). Does it mean this knid of main
board can't put an optional math-coprocessor ? What should he do if he needs
a math-coprocessor ? Have to change his mainboard to be 486DX ?

Some netters said there are only 20Mhz and 25Mhz for 486SX, but my friend was
told it is a 486SX-33Mhz,because the dealer showed him on the mainboard there
is a "cyx... 66" (66/2 =33Mhz), however he only gets a 486SX-20Mhz manual as
the dealer says all 486SX mainboard menus are same.

Thanks for all your help !

Cathy
From: cej@dstos3.dsto.gov.au
Newsgroups: aus.computers.ibm-pc
Subject: Re: IRQ questions.
Date: 8 Oct 92 18:37:38 GMT
Organization: Defence Science and Technology Organisation

In article <ardtlong.718439244@adam.adelaide.edu.au>, ardtlong@adam.adelaide.edu.au (Dale T. Long) writes:
>
> On examining my system (a HT12A (286) based machine) I was given the following
> results. I used two programs; QA Plus and MSD (Microsoft's, of course).
>
> IRQ     QA Plus                 MSD
> -----------------------------------------------------
> 0       Timer                   Timer
> 1       Keyboard                Keyboard
> 2       [Cascade]               Second 8259A  (through the BIOS)
> 3       COM2                    COM2
> 4       COM1                    COM1
> 5       available               LPT2  (not installed)
> 6       Floppy Disk             Floppy Disk
> 7       LPT1                    LPT1
> 8       Clock/Calendar          Clock/Calendar
> 9       available               Redirected IRQ 2
> 10      available               reserved
> 11      available               reserved
> 12      available               reserved
> 13      reserved                reserved  (for co-processor)
> 14      Fixed Disk              Fixed Disk
> 15      available               reserved
>
> I would like to know what the [cascade] of IRQ2 means and why MSD shows it as
> a 'second 8259A'. As well as why MSD shows IRQ9 as being a redirected IRQ2.
> What does this all mean? Why is it redirected? Is this something all 286
> achines have or is it something particular to my machine (HT12A)?
> What tricks does an 8259A do?
>
> Dale Long.
> ardtlong@adam.adelaide.edu.au

For XTs, there are only 8 IRQs available; for AT bus types there are 16.
The second 8259A controls IRQs 9..15. Interrupts are passed along to IRQ2
so the system recognises an interrupt (i.e. a cascade occurs). IRQ2 is thus
reserved, and redirected to IRQ9.

Note: The above gives you a rough idea, grab a tech manual if you need
more details or want to set up some interrupts in your program.

--
Chris Jones                                  E-mail: cej@dstos3.dsto.gov.au
CSS/CD/ERL                                    Phone: +61 8 259 6758
DSTO Salisbury, South Australia                 Fax: +61 8 259 6328

Disclaimer: The opinions expressed are purely personal and do NOT represent
            the official view of DSTO.

"I'm going to put the shame file in the sludge file!  Or is that the sludge
 file in the shame file? Shame, sludge, sludge, shame, ...
 That's life, get nicked.."   Derrin Hunch, Fast Forward
From: markj@ee.su.oz.au (Mark Johnson, Sydney Univ. Elec. Eng., Tel: (+61-2) 692 2013)
Newsgroups: aus.computers.ibm-pc
Subject: priveleged, protected mode PC memory access
Date: 15 Oct 92 02:14:42 GMT
Reply-To: markj@ee.su.oz.au (Mark Johnson, Sydney Univ. Elec. Eng., Tel: (+61-2) 692 2013)
Distribution: aus
Organization: Electrical Engineering, The University of Sydney, Australia

I am looking for information about protected mode access on PC's.

I need to access a memory mapped I/O board with a 32 bit address, and also
I/O ports requiring 16 bit addresses. The application is a very high
performance data sampling machine. Digital data is supplied through a memory mapped dual port RAM, and must be transferred to a SCSI disk subsystem.
Data rate is 4Mbytes per second sustained. (EISA bus, SCSI 2 fast disks.)

It appears that I can approach it 2 ways - either finding or building a protected mode shell, or using some kind of programming language environment
that fully supports protected mode and privileged access.

I already have MASM 6.0 which supports the required instructions, and a large
amount of data on DPMI. I don't want to have to write a full protected mode 
shell for what is a fairly small code application. 

I also have GNU gcc & go32, which provide the protected mode interface, but
don't provide the physical address access I need (I can allocate memory, but
not at a fixed physical addresses without access to control registers).

If anyone knows of some preexisting shell which allows privelege 0, protected
mode access to assembler code I would be most grateful if you could contact me.
Alternatively, if anyone can provide more details on physical memory access
within "gcc", I would also appreciate it. If you have had experience with
some product (including commercial ones) with these capabilities I would be 
interested in your comments.

I can be contacted as

markj@ee.su.oz.au

or by phone - (02) 692 2013
or fax        (02) 692 3847

I am rather busy at the moment and am only getting a chance to read news about
weekly. I would therefore prefer an email response.

Thanks

Mark Johnson 
Dept of Elec Eng
Syd Uni
Newsgroups: aus.computers.ibm-pc
From: johns@macadam.mpce.mq.edu.au (John Savage)
Subject: Executing compressed .EXE files? Is it possible?
Originator: johns@macadam.mpce.mq.edu.au
Organization: School of MPCE, Macquarie University, Australia.
Distribution: aus
Date: Tue, 13 Oct 1992 23:44:37 GMT


The latest catalog from SELTEC ( a shareware company now located in Gosford),
lists a compression program:

      LZE/LZESHELL: a public domain program, compresses an (sic) .EXE file
      to almost half its size!  This isn't compression that must be 
      decompressed to use the file; this is compression of the code, so 
      the program can be used as is.

Is this for real??  (BTW, it is not an April edition of the catalog.)
                                              __       __
__________________________________________   {  \_____/  }  __________________
                                             {           }
  i\     /i           John Savage            '~. `[ ]` .~'     Australia -
  | '^^^' |                                    (.  =--.)                     
  | c   c |     Department of Computing       _/ ~~~~~ \_   beautiful one day
 _(_  ^  _)_     Macquarie  University       (w         w)
 --- _^_ ---            Sydney                (         )   perfect the next
                                               \__ _ __/
====internet: johns@macadam.mpce.mq.edu.au====  \_) (_/   ====================
                                                                             

Newsgroups: aus.computers.ibm-pc
From: tpearson@titan.trl.OZ.AU (Trevor Pearson)
Subject: Re: SX and DX ? 386 and 486 ?
Organization: Telecom Research Labs, Melbourne, Australia
Date: Tue, 13 Oct 1992 00:24:56 GMT

guac@brt.deakin.edu.au writes:
> Hi all,
> 
> I'm confused by systems : 386SX, 386DX, 486SX and 486DX.
> 
> I was told the difference between SX and DX is a math-coprocessor, that is the
> SX does not have the math coprocessor but DX has. However I found my friend's
> 486SX-33 has a math-coprocessor when I use Norton to check.
> 
> Anyone can help me to clearify these configurations ?
> 
> Thanks in advance !
> 
> Cathy

Some versions of Norton do not know about 486SX CPU's. They detect a 486
and asume it has a co-pro. The 486SX does not have a co_pro but you can
add one just as you can with a 386.


 *****************************************
 * Trevor Pearson                        *
 * TRL. Clayton, Australia               *
From: ruffus@tartarus.uwa.edu.au (Roderick Nasir DAVID)
Newsgroups: aus.computers.ibm-pc
Subject: Re: Reading Mac disks in PC?
Date: 14 Oct 1992 03:49:17 GMT
Organization: The University of Westrn Australia
NNTP-Posting-Host: tartarus.uwa.edu.au
X-Newsreader: Tin 1.1 PL5


	Or you could use a prog for the mac called Access PC 
	for the Mac.This is really good as It reads Ibm as a mac    
	disk and it also reads 1.44 and 720k disks with no hassles.
	The best thing is its shareware!.


				ruffus
From: guac@brt.deakin.edu.au
Newsgroups: aus.computers.ibm-pc
Subject: SX and DX ? 386 and 486 ?
Date: 12 Oct 92 16:12:58 GMT
Organization: Deakin University, Melbourne

Hi all,

I'm confused by systems : 386SX, 386DX, 486SX and 486DX.

I was told the difference between SX and DX is a math-coprocessor, that is the
SX does not have the math coprocessor but DX has. However I found my friend's
486SX-33 has a math-coprocessor when I use Norton to check.

Anyone can help me to clearify these configurations ?

Thanks in advance !

Cathy
From: skcgoh@tartarus.uwa.edu.au (Shaw Goh)
Newsgroups: aus.computers
Subject: 386sx Mboard
Date: 12 Oct 1992 04:05:57 GMT
Organization: The University of Westrn Australia
NNTP-Posting-Host: tartarus.uwa.edu.au
X-Newsreader: Tin 1.1 PL5

OK.  I've inserted this posting before but someone did a bad deal on me.
I still have the 386 SX 16 Mhz Motherboard.  Has 2Mb DRAM, Intel
Chipset, Phoenix BIOS.

I'll seriously consider any offer at all but please make it reasonable!

Please email me direct

Shaw...
skcgoh@tartarus.uwa.edu.au
From: lodge@mundil.cs.mu.OZ.AU (John Wesley LODGE)
Newsgroups: aus.computers
Subject: For Sale
Date: 16 Oct 92 03:22:13 GMT
Distribution: aus
Organization: Computer Science, University of Melbourne, Australia



I have currently for sale several items.
They are :

	Omnidata(addler) dds1 system.
	 This system contains a terminal with 2 SS 5.1/4 drive
	 A daisywheel printer and Wordprocessing,Accounting,
	 and Database software. It worcks and came from an insurance 
	 Agent.
					$100 

        1 Teleray terminal 
			$30

	1 Telvideo 960 terminal.
	  I am not sure on what type of mode this terminal 
	  can support but it does have an extended graphics 
	  installed on it.
			$50

	1 386dx -25 motherboard and Cyrix copro
	The motherboard is about year old 
	and the copro the same.
	(I am not sure about the ages as I am posting
	this for a friend but the reason for sale is h
	upgrade to a 486sx)
			$300


	email me if interested at lodge@munagin.ee.mu.oz.au
	(All prices are negotiable and I can deliver if in melbourne area)
Newsgroups: aus.computers