[Coco] error trapping

[Bob Devries]

hmmmm,

where did I read that programming in assembler (or here, using a system 
call) is like digging with a spoon; you have ultimate control over all the 
dirt :)

Regards, Bob Devries

--
Besides a mathematical inclination, an exceptionally good mastery of one's 
native tongue is the most vital asset of a competent programmer.

Edsger W.Dijkstra, 18 June 1975

----- Original Message ----- 
From: "Wayne Campbell" <asa.rand at yahoo.com>
To: "CoCoList for Color Computer Enthusiasts" <coco at maltedmedia.com>
Sent: Wednesday, December 02, 2009 10:12 AM
Subject: Re: [Coco] error trapping



> OK. Seems I can never get this right. Think BEFORE you ask! LOL

>

> I slept on it after posting this, and when I woke up this morning, the 

> first thing in my mind was "use the system call". I did, and it's working 

> fine.

>

> Wayne

>

>

>

>

> ________________________________

> From: Wayne Campbell <asa.rand at yahoo.com>

> To: coco at maltedmedia.com

> Sent: Tue, December 1, 2009 1:58:31 AM

> Subject: [Coco] error trapping

>

> I need to know how to trap an error generated by the makdir command when 

> it's being executed with a SHELL statement in a Basic09 subroutine. If I 

> try to use it, and the directory already exists, the error is displayed on 

> the screen, despite the fact that I am using a ON ERROR GOTO statement to 

> trap it. Execution resumes in the correct location in the code, but I 

> can't find anything in the OS-9 manual about suppressing error messages.

>

> Can anyone help?

>

> Wayne

>

>

>

>

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