BB4W version 6.15a Released

New releases of BB4W and BBCSDL, and other updates, will be announced here
DDRM
Posts: 396
Joined: Mon 02 Apr 2018, 18:04

BB4W version 6.15a Released

Post by DDRM »

Cross-posted from Kendall's forum:

I have released version 6.15a of BBC BASIC for Windows. This is a maintenance release, primarily to fix a serious bug discovered in version 6.14a. I have also taken the opportunity to improve compatibility with BBC BASIC for SDL 2.0 by introducing a few features supported in that version but not previously in BB4W.

The changes are as follows:
  • Interpreter / Run-Time Engine:

    Fixed a nasty memory leak on partially initialising a string array. Oops!

    Fixed a bug in VDU 127 (DEL) when in VDU 5 mode, which did not work correctly if the text direction was changed. Also altered its behaviour to match Acorn versions (the background is always plotted opaque, irrespective of the GCOL mode).

    Added support for (e.g.) DIM ]^P% 1000, for compatibility with 64-bit editions of BBC BASIC.

    Added the SUM (modulo-64-bit addition) operator, for compatibility with BBCSDL.

    Added GCOL modes 5-7, for compatibility with BBCSDL and Acorn versions.

    Increased the palette size to 256 entries, for compatibility with BBCSDL (although the COLOUR and GCOL statements limit the number of logical colours to 128).

    Improved support for odd-value graphics coordinates, especially relative coordinates; errors should no longer accumulate.

  • Libraries:

    Updated the IMGLIB library to support loading and displaying animated GIFs.

  • Example Programs:

    Added the following example programs, virtually identical to those supplied with BBC BASIC for SDL 2.0:

    In EXAMPLES\GENERAL: CONWAY.BBC and KERNING.BBC.
    In EXAMPLES\GRAPHICS\: ANIGIF.BBC.
    In EXAMPLES\PHYSICS\: CRADLE.BBC.
    In EXAMPLES\SOUNDS\: METRONOME.BBC.
To upgrade the full (paid-for) version of BBC BASIC for Windows to v6.15a download and install upgrade.exe from the web site; remember that you are allowed to install it on multiple computers so long as only one copy is in use at any given time. To upgrade the trial version (or install it from scratch) download and install bbcwdemo.exe from the same place. It is possible that these executables may trigger security alerts until they have acquired a reputation for safety.

Edja
Posts: 43
Joined: Tue 03 Apr 2018, 12:07

Re: BB4W version 6.15a Released

Post by Edja »

A very positive proof of ongoing support. Even when Richard has decided -sadly enough- to remain somewhere in the background, he is still behind his creation and continues to bring out bug fixes and improvements. Great !!

Hated Moron
Posts: 98
Joined: Thu 07 Apr 2022, 10:10

Re: BB4W version 6.15a Released

Post by Hated Moron »

DDRM wrote:
Sun 03 Apr 2022, 16:52
Cross-posted from Kendall's forum:
I have released version 6.15a of BBC BASIC for Windows. This is a maintenance release, primarily to fix a serious bug discovered in version 6.14a.
If you're unsure whether or not to upgrade, I suggest that your mind will be easily made up by running this (seemingly) innocuous code:

Code: Select all

      DIM a$(2)
      REPEAT
        a$() = "Hello ", "world!"
      UNTIL FALSE
which in versions prior to v6.15a will (inexcusably) result in an instant No room error. :shock:
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