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INFO-MAC Digest V2 #24

Posted: April 25th, 1985, 11:29 pm
by Info-Mac
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From: info-mac@uw-beaver
Newsgroups: fa.info-mac
Subject: INFO-MAC Digest V2 #24
Message-ID:
Date: Fri, 29-Mar-85 22:03:54 EST
Article-I.D.: uw-beave.973
Posted: Fri Mar 29 22:03:54 1985
Date-Received: Sun, 31-Mar-85 02:37:02 EST
Sender: daemon@uw-beaver
Organization: U of Washington Computer Science
Lines: 232

From: Moderator John Mark Agosta


INFO-MAC Digest Saturday, 30 Mar 1985 Volume 2 : Issue 24

Today's Topics:
Saddle desk accessory
Source code for 'Saddle'
Comments on ExperLogo
Applebus Developer's Handbook
cheap 300/1200 baud modems
Want info about digitial speech input to a Mac
MacIntosh monitor and headaches


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Date: Wednesday, 27 March 1985 16:43:04 EST
From: [email protected]
Subject: Saddle desk accessory

'Saddle' is a desk accessory which draws saddle-like patterns in its
window. I adapted it from a program that one of my officemates had
running on a PERQ. It doesn't work very well from inside the Finder;
apparently the Finder does not call SystemTask (the source of DA
cycles) very often. However, it does run at a reasonable speed from
inside BinHex, FEdit, etc.

This message contains the accessory, in .HQX-encoded D.A.M. format,
and the next message contains the source code, written for Megamax C
(version 2.0, mixed-case toolbox names).
(Note: these files have already been posted to net.sources.mac;
there's no need to forward them.)

-- [email protected]

[The encoded version is in da-saddle.hqx -jma ]

------------------------------

Date: Wednesday, 27 March 1985 16:47:34 EST
From: [email protected]
Subject: Source code for 'Saddle'

This is the source code for the Saddle desk accessory, written for
Megamax C version 2.0 (mixed-case toolbox names). See my previous
message for details. [ This has been archived as
da-saddle.c -jma ]

(It has already been posted to net.sources.mac, so there is no need to
forward it.)

------------------------------

Date: 27 Mar 85 1851 PST
From: Fred Lakin
Subject: Comments on ExperLogo

Gayle Curtis writes:

We've been using ExperLogo for a few weeks now, primarily as a
sketching tool for designing user-interface scenarios in a
process-control application. (and I've been having a great time
working with the package):

1. The working environment is very easy to get along with, providing
a 'Listener window for immediate execution of single-line expressions
and for monitoring system output.

2. Multiple 'Edit-Buffer windows are supported; each may be
independently scrolled, resized, etc., and it seems you can have as
many on-screen as you can bear to look at. Chunks of code can be moved
between editbuffers and the Listener Window.

3. 'Graphic windows co-exist with the text windows and all together
they can offer a blow-by-blow view of program execution. Very handy.

4. In addition to the 2D 'Bunny graphics, which act a lot like turtle
graphics, ExperLogo offers both 3D (pitch, roll, yaw) and spherical
(2D mapped onto a sphere) graphics. All these graphics are created by
"relative geometry" commands, e.g.,"forward 60 right 45,..." etc.

5. The graphics run fast enough to do what you might call "simple
animation."

6. A large set of the builtin Mac Quickdraw functions are available,
and we've been finding it quicker to mock-up Quickdraw graphics using
ExperLogo than going through the Pascal Workshop. More QD is to be
available on the next release.

7. We're running on Lisa under MacWorks. Version 'C of Macworks
alleged to be required. Version 'B will get you up, but may induce
bugs.

8. Problems we've had:

a. Copy-protection/validation scheme doesn't seem to work on our system,
and as a result we need to insert the Master diskette everytime we fire-up
the ExperLogo system, for validation. This isn't too bad,though, because
every ExperLogo source file you've got is accessible from within
the editor.

b. At first, we'd get really unreasonable error conditions, like
functions not taking variables as argments when they should, etc.
I've taken to throwing away the "StdEnv" file and forcing
regeneration, at the first sign of trouble, and most problems have
gone away. This procedure is outlined in an addendum to the manual.

c. A related problem had to do with apparent memory limitations.
("Not enugh
memory....Better save your work.") This problem is related to the
Standard Environment condition, and also a function of the size of
file
you're trying to compile. Suggestion from ExperTelligence was to
run
the file in smaller chunks. Tried it and it worked. Only a
problem on
very large files.

9. Error messages are cryptic and do not refer to line numbers (there
being none), though it will tell you which function the error occured
in. This was annoying at first, but now it's manageable.

10 Other features: many LISP functions, some documented and some not
...
car - first, cdr - butfirst, append - (not doc), nconc -
nconc,
funcall - funcall, apply - apply, apropos - apropos,
cons - (not doc), putprop - pprop, get - gprop, assoc -
findkey ...

If you do APROPOS
Subject: cheap 300/1200 baud modems

Why not buy a PROMETHEUS PROMODEM for $339 at SGC Fremont, CA
415/791-7091 & have the best? Comes with MAC PAK--modem to mac cable &
Promodem_M, not so hot, in that it doesnt simulate a VT100, but is
there a better modem? You download the manual updates from a BBS. Also
has nifty options: 64k buffer for storing msgs. going or coming; sent
or received in the nite (anytime), etc.

They advertise in Micro Times.

No I don't work for...da dah da dah.................

------------------------------

Date: 27 Mar 1985 16:23-EST
Sender: [email protected]
Subject: Want info about digitial speech input to a Mac
From: [email protected]

Does anyone know anything about getting digital speech input into a
Macintosh? I would be particularly interested in any special devices
for this purpose available for the Mac, or pre-packaged
general-purpose devices which produce serial output in RS-232 or
RS-422 compatible form which could be fed directly into the Mac's
serial port. I do not particularly care what digitilization scheme is
used (PCM, ADPCM, Delta, or whatever) -- just as long as I can
interface it easily and it is fairly inexpensive (i.e., under around
$1000)

------------------------------

Date: Wed 27 Mar 85 16:52:26-PST
From: Lee Altenberg
Subject: MacIntosh monitor and headaches

I find that there is something about the MacIntosh monitor that gives
me headaches very quickly once I start working at one. I have never
experienced this with any other monitors, VT100, Datamedia, Lisa, etc.
Does any one know 1) What unique properties the Mac monitor may have,
in terms of refresh
pattern, frequency, etc.? 2) Whether any of the above
parameters can be modified? 3) If anyone else has had similar
experiences?

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End of INFO-MAC Digest
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