Info-IBMPC@WSMR-SIMTEL20.ARMY.MIL (03/09/89)
Info-IBMPC Digest Thu, 9 Mar 89 Volume 89 : Issue 34
Today's Editor:
Gregory Hicks - Chinhae Korea <COMFLEACT@Taegu-EMH1.army.mil>
Today's Topics:
720kb x 1.44mb compatibility.
A Question on Data Files
Educational SW
Resetting the PC
Tektronix 4105 emulator
Floyd-Steinberg
HP Plotter
info on drafting program requested
Information on a program called CAUSE
INT 19H not working
Lotus 123 internam data format
Mandelex (V89 #29)
Request for CD software
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Date: Tue, 28 Feb 89 14:00:15 CET
From: Georg Moe <EDB87003%NOBIVM.BITNET@CUNYVM.CUNY.EDU>
Subject: 720kb x 1.44mb compatibility.
Yes, the problem still exists| We have had some problems here, using true
blues and clones (new machines with clean diskheads).
Having formatted 720kb disks on a 1.44 mb drive on one machine, has caused
problems on PC's with only 720 kb drives. I do not say that this is
happens every time, the rule seems to be Murphys law... (which can be
more frustrating)
Georg Moe
DP Department
Norwegian School of Management
PO. Box 580, N-1301 SANDVIKA, NORWAY
Tlf (47 2) 47 07 03
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Date: Tue, 28 Feb 89 08:30:31 EST
From: reid@thinman.ctc.contel.com (Tom Reid)
Subject: A Question on Data Files
There is an easy way to have programs find overlay files. You need the
following things in your autoexec.bat or config.sys files: Lastdrive=h:
(or some high letter), tell wordstar that its overlay files are in drive
h: and then use the subst command to redirect drive h: to the actual
location of the files. This works well with older versions of turbo
pascal also.
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Date: Tue, 28 Feb 89 14:55:02 HMT
From: Kostas Antonopoulos <NETSTU01%GREARN.BITNET@CUNYVM.CUNY.EDU>
Subject: Educational SW
I am searching for Whatever Educational Software exists for IBM
PC/XT/AT/386 and clones.
Tnank you for your help,
-Kostas-
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Date: Mon, 27 Feb 89 20:55:07 PST
From: Alan Ariel <1052P%NAVPGS.BITNET@CUNYVM.CUNY.EDU>
Subject: Resetting the PC
There is a file at SIMTEL called PD1:<msdos.sysutl>WARMCOLD.BOOT
which describes how to do this without INT 19H. The code is as follows:
mov dx,0040
mov ds,dx
mov bx,0072
mov word ptr [bx], 1234
jmp ffff:0000
I did it just like that with DEBUG and it's worked fine. If you want to
do a cold boot with memory check, etc., use 0000 instead of 1234.
Alan D. Ariel BITNET: 1052P@NAVPGS
LT USN DDN: 1052P@CC.NPS.NAVY.MIL
SMC 1624 (or) LEEKW@A.ISI.EDU
Naval Postgraduate School Tel: (408) 646-2786
Monterey, CA 93943 AV: 878-2786
Acknowledge-To: <1052P@NAVPGS>
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Date: Mon, 27 Feb 89 02:22:08 EDT
From: "Tony G. Papadimitriou" <37KGLLQ%CMUVM.bitnet@cunyvm.cuny.edu>
Subject: Tektronix 4105 emulator
Does anyone know of a shareware or public domain Tektronix 4105 (or
higher) emulator that will run on PC-compatibles? It must run on a CGA
(or better a Tandy 1000 or PCjr CGA). Any help would be appreciated.
Please respond to 37KGLLQ@CMUVM.
Thanks in advance, -- Tony Papadimitriou
Acknowledge-To: <37KGLLQ@CMUVM>
------------------------------
Date: Tue, 28 Feb 89 00:13 EST
From: DLV%CUNYVMS1.BITNET@CUNYVM.CUNY.EDU
Subject: Floyd-Steinberg
The primary reference is R. W. Floyd, L. Steinberg. An adaptive algorithm
for special grey scale. SID 75 digest. Society for Information Display,
1975, 36--37.
(A very simple idea, not very good results.)
A related paper is M. R. Shroeder. Images for computers. IEEE Spectrum
6, 3 (March 1 969) 66-78 Comm. ACM 12 (1969), 95--101.
A much better approach to dithering, with spectacular results, is in
Donald E. Knuth (who else!). Digital halftones by dot diffusion. ACM
Trans. on Graphics, 6, #4 (October 87), 245--273. (The issue with Mona
Lisa on the cover---get this first)
Some related source code (in WEB) can be found in
Donald E. Knuth. Fonts for digital halftones. TUGBoat 8 (1987),
135--160.
Na zdorov'ye!
-Dimitri Vulis
-Department of Mathematics
-Graduate Center, City University of New York
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Date: Tue, 28 Feb 89 07:57 PST
From: Michael L. Farkas <Farkas@GODZILLA.SCH.Symbolics.COM>
Subject: HP Plotter
I'm looking for a program that will convert Postscript to HP-GL. I also
need the source code. Anything out there?
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Date: TUE 28 FEB 1989 09:43:00 CST
From: Tom Mittan <J2MT%SDSUMUS.BITNET@VM1.NoDak.EDU>
Subject: info on drafting program requested
I have found that I have the need for a drafting type program, that
will be able to draw basic floor plans, and has a library of predrawn
shapes to use also. If anyone would have any information or exprience on
a program of this type, please send information to me.
TOM MITTAN
BITNET: J2MT000@SDSUMUS
[A commercial program of this sort is one called "Magic Mover". I have
never used it, but have seen it used by one of the workers in my office.
gph]
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Date: Tue, 28 Feb 89 13:45:21 CET
From: Georg Moe <EDB87003%NOBIVM.BITNET@CUNYVM.CUNY.EDU>
Subject: Information on a program called CAUSE
The other day I read an short note in BYTE-magazine about an object
oriented application generator called CAUSE. The article said that it was
available on both the Macintosh and IBM PC's, and that it creates
stand-alone applications.
Has someone out there some experience with that piece of software? Is it
a good solution if you want to develop applications that run on the
Macintosh and PC's (how portable is the source...)? Is it easy to learn
(depends on how one defines the word "easy", my background is BASIC, Turbo
Pascal, PROGRESS (4GL)).
Other comments...
Thanks
Georg Moe
DP Department
Norwegian School of Management
PO. Box 580, N-1301 SANDVIKA, NORWAY
Tlf (47 2) 47 07 03
------------------------------
Date: 27 Feb 1989 22:45-CST
From: SAC.DYESGPF@E.ISI.EDU
Subject: Re: INT 19H not working
Although I can not confirm it at the moment (this machine is not a clone),
about a year ago I was poking around in the ROM in segment F000 and if I
remember correctly there is a long jump at F000:FFF0 that enters the boot-
up routine. I believe it is the same routine that is used when the system
is first powered-up; without the "wear-and-tear" of switching off and on.
I tested this by setting up a long jump to F000:FFF0 (?) within debug and
when executed the system did reboot and there where config.sys and
autoexec files present.
Al Holecek
<SAC.DYESGPF@E.ISI.EDU>
<DYESS_SGPF@SACEMNET.ARPA>
------------------------------
Date: Tue, 28 Feb 89 10:30:24 EST
From: Don Story <R1STORY%AKRONVM.BITNET@CUNYVM.CUNY.EDU>
Subject: Lotus 123 internal data format
I am writing a small spreadsheet application, and would like more
information on the how Lotus 123 internally stores its cell data. Could
anyone out there in PC-Land help me or give me a reference? In a recent
issue of PCMag, there was some discussion on how Lotus stores this info on
disk. Does it use this same format in memory?
Thanks
DPS
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Date: Tue, 28 Feb 89 01:09:38 EST
From: Jeff_MacKie-Mason@um.cc.umich.edu
Subject: Mandelex (V89 #29)
A reader wrote that the Mandelbrot-set generating program Mandelex was not
recognizing his computer. I had this problem too, and found that the
solution in my case was simple and silly: the environment string given to
identify the computer *must* be in capital letters! I.e., SET
COMPATIBILITY=IBM, not ibm.
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Date: Tue, 28 Feb 89 09:45:14 CST
From: AXVSCCN%UICVMC.BITNET@UICVM.uic.edu (Chris Novy)
Subject: Request for CD software
Hi all:
I've got a Hitachi CDR-1503S CD-ROM player/disk drive. Unlike the other
CD-ROM's we use here at work, this one has audio jacks on it as well as
data. Does anyone in netland have or know of software that will let me
use the player to play standard audio CD's? I was sent a photocopy of a
bug-ridden BASIC program to play CD's but I have little patience for
debugging the work of non-programmer's. Thanks.
Chris Novy BITNET: axvsccn@uicvmc
Southern Illinois Univ. Internet: axvsccn@uicvmc.aiss.uiuc.edu
Carbondale, IL 62901 Packet: WA9V@WD9EBQ
Phone: (618) 453-2336
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End of Info-IBMPC Digest
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