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Re: Saving animated sprites from a simple BASIC graphic program

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In article <cec7dc5358.Matthew@sinenomine.freeserve.co.uk>, Matthew
Phillips <spam2011m@yahoo.co.uk> wrote:
> In message <5853b30d57basura@invalid.addr.uk> on 19 Mar 2020
>  Richard Ashbery  wrote:

[snip lots of useful feedback]

> > Apparently my method of generating the sprites is deprecated
> > (went out with the arc I believe) - I'll have a look at Druck's
> > SWI, OS_SpriteOP though I suspect I might need help understanding
> > it.

> What you need is

> SYS"OS_SpriteOp",14,0,STR$(n),0

> to replace the VDU command.  Or possibly

> SYS"OS_SpriteOp",14,0,STR$(n),1

I'll have a look. Thanks

> You could go further than that and DIM a block of memory in the
> BASIC so that you can define your own sprite area rather than the
> system sprite area.  Then you would not have to mess around
> altering the system sprite area allocation, which on most machines
> these days starts out as 0K.

That would be a definite improvement over method I've used.

> I don't think I have used *slist or *ssave this millennium -- it
> was very helpful to have the extra instructions.  

It was reasonably well documented in the BBC BASIC Guide and having just
checked the date - wow! that was early in the 1990s. What's surprising
is that it still works :-)

Richard

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Thread

Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-17 16:57 +0000
  Re: Saving animated sprites from a simple BASIC graphic program "John Williams (News)" <UCEbin@tiscali.co.uk> - 2020-03-17 17:28 +0000
    Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-17 20:30 +0000
      Re: Saving animated sprites from a simple BASIC graphic program "John Williams (News)" <UCEbin@tiscali.co.uk> - 2020-03-17 21:12 +0000
        Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-17 21:23 +0000
      Re: Saving animated sprites from a simple BASIC graphic program News <chrisjohnson@spamcop.net> - 2020-03-17 23:39 +0000
  Re: Saving animated sprites from a simple BASIC graphic program Steve Fryatt <news@stevefryatt.org.uk> - 2020-03-17 22:44 +0000
    Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-18 17:44 +0000
      Re: Saving animated sprites from a simple BASIC graphic program druck <news@druck.org.uk> - 2020-03-18 20:55 +0000
      Re: Saving animated sprites from a simple BASIC graphic program Steve Fryatt <news@stevefryatt.org.uk> - 2020-03-19 00:08 +0000
        Re: Saving animated sprites from a simple BASIC graphic program Steve Fryatt <news@stevefryatt.org.uk> - 2020-03-19 07:38 +0000
          Re: Saving animated sprites from a simple BASIC graphic program News <chrisjohnson@spamcop.net> - 2020-03-19 10:17 +0000
          Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-19 20:05 +0000
            Re: Saving animated sprites from a simple BASIC graphic program Steve Fryatt <news@stevefryatt.org.uk> - 2020-03-19 21:10 +0000
              Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-19 21:59 +0000
      Re: Saving animated sprites from a simple BASIC graphic program Matthew Phillips <spam2011m@yahoo.co.uk> - 2020-03-19 08:23 +0000
        Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-19 13:34 +0000
          Re: Saving animated sprites from a simple BASIC graphic program Matthew Phillips <spam2011m@yahoo.co.uk> - 2020-03-19 21:10 +0000
            Re: Saving animated sprites from a simple BASIC graphic program Richard Ashbery <basura@invalid.addr.uk> - 2020-03-19 21:40 +0000
  Re: Saving animated sprites from a simple BASIC graphic program "Derek.Moody" <derek.moody@casterbridge.net> - 2020-03-17 18:05 +0000

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