1.01/1.02

Changes?  Absolutely NO changes.  Only, a bug in the ARP docs caused and
incredibly wide range of problems, from memory completely wiped (including
the backed-up battery clock) to a simple crash-on-exit. Now, thanks to
Christopher A.  Wichura, the 1.01 code is ok.  So, even you, if you're using
ARP, beware:

ARPALLOC() DOES NOT PASS ANY TRACKER BACK THROUGH LASTTRACKER!!!!

You must use the memory pointer you get as a DefaultTracker *, too. Or
you'll get a NULL tracker pointer...

The same holds for ArpAllocFReq().

                                                seba

1.04

I fixed a couple of thing.  No major changes tho 8^(.

The dreaded RGB reading guru has gone.  Now Mostra complains that "Too many
bitplanes" if you try to display a 24-bitplanes IFF RGB file. The same
happens if you try to display a DPaint stencil (0 bitplanes). In this case,
of course, the message is "No bitplanes".  I consider them both broken IFF
specs.

The keyboard handling is much smarter and closer to Commodore's guidelines.
SHIFT-cursor brings you to the borders of the picture, ALT-cursor moves by a
screen width/height-16 pixels, and cursor alone (CTRLed) moves by 8 (16)
pixels.

The priority handling is much smarter, too.  If you start Mostra with a
priority higher than 1, no priority change will be issued. Moreover, at exit
the original task priority will be restored (previously Mostra set the
priority to 0).

Moving to the bottom of a SHAM interlaced picture with an odd number of
lines caused confusion in the copperlist.  This has been fixed, but with the
loss of the display of the last line of the picture (nothing so terrible
anyway).

A SHAM image displayed in a screen taller than its height produced a random
copperlist.  This has been fixed.

A new option allows to lock the input from the keyboard during the display.

Another new option locks the picture (you can't scroll around) but the
memory in which the file was loaded is immediately freed after the
decompression.  This should allow for double buffering on a 512K machine.
The new memory management is also automatically activated if the option SECS
is used or the picture dimensions are less than the screen dimensions (since
the picture scrolling is locked anyway).

There are other areas which needed updates, but I'm busy on my copier,
SuperDuper.

I would like to thank Walter Dörwald (Germany), Jürgen E.  Haug (Germany),
Svante Kleist (Sweden), Tim Beard (Australia) and Christian König (Germany)
for having sent the shareware contribution for Mostra.


1.06

This is an interim release. I'm working on Mostra 2.0, which will work only
under 2.04 and won't need ARP.

CTBL support has gone. Too many times I erroneously tried to view a CTBL
image and I god deadlocks and crashes from Dyna-Show. Instead, Mostra 1.06
supports multi-palette pictures via the new PCHG (Palette CHanGes) chunk. If
you're interested in line-by-line palette change technology, you should
definitely look at the PCHG proposal, which is available on BIX and on
CBMNET at cbmita!~/sebamiga/PCHG.lzh. Utilities such as Wasp and HamLab are
available for converting from SHAM/CTBL to the new technology, and it's my
hope that more and more programs will support PCHG. Mostra supports the full
range of PCHG capabilities. I kept SHAM support just because it was easy to
build a (smaller) fake PCHG chunk from a SHAM chunk. The whole issue is too
complex to be treated here: I simply suggest you to convert your SHAM/CTBL
pictures to PCHG using Wasp or another tool. PCHG gives you thousand of
colors in any Amiga video mode (HAM, hires, EHB...) while retaining full
compatibility with Intuition and giving you full overscan. Note that under
1.2/1.3 some bugs of the system MrgCop() function can screw up overscanned
multi-palette pictures.

The centering code is smarter now. The limits for an overscan picture are
the Release 2 standard ones---362x283 on PAL, 362x241 on NTSC. When running
under under Release 2, the new system overscan handling functions are used.

Moreover, the byterun unpacking routine is fairly faster.

Finally, the movement keys correspond to the _new_ Commodore guidelines.
SHIFT moves by page, while ALT moves to the top/bottom.

Upto bug fixes, this is the last release which will work under 1.2/1.3.


1.07

A very stupid bug slipped in 1.06, but it was important to fix it in order
to allow PCHG compatibility to enter smoothly in. If a FORM contained both
PCHG and SHAM chunks (for compatibility with older viewers/systems) Mostra
would have thought it was a bad IFF file.

1.08

The bug fix of 1.07 introduced a crashing bug. ::sigh::

The documentation is now written with GNU's Texinfo. The distribution is
as follows:

Mostra.texinfo --- the base Texinfo file. If you want to recompile with
                   a customized texinfo.tex file.
Mostra.guide --- the AmigaGuide® file obtained with makeguide.
Mostra.doc --- a plain ASCII file for people without AmigaGuide®.
Mostra.dvi --- a ready-to-print dvi file for people with TeX but without
               texinfo.tex.

The content of all these documents is the same, it's just the format that's
changing.

1.09

Full support for the AGA chip set is now available. This includes the the
correct computation of bitmap widths and the correct parsing of the CAMG
word.

A small bug in the mouse blanking function has been fixed.

The mininum screen width and height are now set to 128.

Of couse, using ARP under 3.0 is a bit ridiculous. Mostra 2.0 will drop
ARP in favour of Release 2.