[Coco] D.L. Logo question
devries.bob at gmail.com
Thu Nov 22 20:58:36 EST 2007
Here's an excerpt from the D.L. Logo manual, page 6:
LOGO in Action
One of the best things about owning a new product is to see it working well.
To let D.L. LOGO show off, leave your backup diskette in drive 0, and type
the following command:
LOAD "DEMO" [ENTER]
The blue cursor disappears, and drive 0 runs for a few moments. When the
blue cursor reappears on the screen (your screen shows a question mark (?)
followed by a blue block), type:
If you have a Speech/Sound cartridge installed, the demonstration program
greets you audibly, as well as on the screen display, and speaks to you
throughout the demonstration. Sit back and enjoy the display. When the
program ends, it repeats itself.To stop the program, press [BREAK].
All the programs used in the demonstration are on your D.L. LOGO diskette.
Following is a complete list or directory of all the programs provided with
These instructions come immediately after showing how to start LOGO from the
OS-9 command line.
D.L. LOGO, as supplied, will not run on a coco3, because it has a version
01.01.00 of OS-9 level 1.
As you can see, no extra memory allocation is required for it to run, and
the program repeats without problem.
Regards, Bob Devries, Dalby, Queensland, Australia
Isaiah 50:4 The sovereign Lord has given me
the capacity to be his spokesman,
so that I know how to help the weary.
my blog: http://bdevries.invigorated.org/
----- Original Message -----
From: "Robert Gault" <robert.gault at worldnet.att.net>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Friday, November 23, 2007 10:35 AM
Subject: [Coco] D.L. Logo question
> Let me start by saying I don't know the Logo language and never used it
> until the following occurred.
> I was given a disk image of what I believe is the original D.L. Logo disk
> for OS-9 Level-I. The disk contains a Demo program and several data files
> that are part of Demo. I been testing the disk image in MESS and the odd
> thing is the program won't run as written; Out of Memory Error.
> If this program was supplied with D.L. Logo, it is strange that it won't
> run as written. The best I've been able to do is start Logo as follows:
> logo #24K
> After boosting data memory (default is about 10K) the program will at
> least run a single pass to completion. However, the program is written to
> repeat in an endless loop. With 24K, the program runs out of memory on the
> second pass. I've not been able to give logo more memory nor get the
> program to run through more than one pass.
> Can anyone owning D.L. Logo provide information on the above? Were there
> instructions in the owner's manual on increasing the amount of memory
> available to Logo? Is there some garbage clearing command for Logo which
> should be used in the program after each pass?
> It seems to me that the demo program chews up data space with recursive
> routines. I've no idea if Logo has memory flooding or what it does to
> clear data memory when a recursive program ends (if necessary).
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> Coco at maltedmedia.com
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