Groups > comp.sys.acorn.programmer > #6208

Re: Getting extra memory

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From	Martin <News03@avisoft.f9.co.uk>
Subject	Re: Getting extra memory
Newsgroups	comp.sys.acorn.programmer
Date	Wed, 04 Nov 2020 17:23:18 +0000 (GMT)
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In article <58ca26a060bob@sick-of-spam.invalid>,
   Bob Latham <bob@sick-of-spam.invalid> wrote:
> In article <58ca23d0f5News03@avisoft.f9.co.uk>,
>    Martin <News03@avisoft.f9.co.uk> wrote:
> > In article <58ca210e71bob@sick-of-spam.invalid>,
> >    Bob Latham <bob@sick-of-spam.invalid> wrote:

> > Not sure what, if or how you have set workspace.
> It starts out as just the "next" slot 640K.

So how is the expression 'workspace' set to &8000+next ?

> > I am not sure why you are resorting to assembler, when you could
> > do it in BASIC quite easily. 

> 1. For the speed.

The time will be largely spent in OS_File for load and save, which is
the same in Basic & assembler.

> 2. This is for pleasure, I like assembler. Always my first choice
> unless I need chunky maths then I'm forced into Basic. 

Aaah!  It was not clear you are a masochist :-))

[snip simple BASIC]

> Thanks for that. I can see that may well be the sensible way but I
> do want to understand why my assembler code errors.

Have you looked at the output from the *Showregs command?
And checked what code the abort is in (eg with *Where)
It in BASICVFP in this 5.28 ROM, but yours is probably different.

-- 
Martin Avison 
Note that unfortunately this email address will become invalid
without notice if (when) any spam is received.

Thread

Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 12:47 +0000
  Re: Getting extra memory Martin <News03@avisoft.f9.co.uk> - 2020-11-04 13:17 +0000
    Re: Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 13:48 +0000
      Re: Getting extra memory Martin <News03@avisoft.f9.co.uk> - 2020-11-04 17:23 +0000
        Re: Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 18:04 +0000
          Re: Getting extra memory Martin <News03@avisoft.f9.co.uk> - 2020-11-04 18:44 +0000
            Re: Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 22:03 +0000
      Re: Getting extra memory druck <news@druck.org.uk> - 2020-11-04 18:06 +0000
        Re: Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 18:33 +0000
  Re: Getting extra memory Steve Drain <steve@kappa.me.uk> - 2020-11-04 17:38 +0000
    Re: Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 18:11 +0000
      Re: Getting extra memory Bob Latham <bob@sick-of-spam.invalid> - 2020-11-04 18:32 +0000

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