Steigar WHDLoad Pack

README
Short:    HD Installer for Steigar
Author:   DJ Mike (djmike@crystalmike.com)
Uploader: DJ Mike (djmike@crystalmike.com)
Version:  1.1
Type:     game/patch
Requires: WHDLoad 18, 512k chip mem

This patch applies to "Steigar" (c) 1989 Screen 7
Two versions are supported, including SPS 2120.

Thanks to Carlo Pirri and Christoph Gleisberg for supplying the originals.

REQUIREMENTS:
- Slave requires WHDLoad V10+.
- Game requires 512k chip mem
  (+657k other memory for preload option)

FEATURES:
- Game loads fully from HD
- Uses real files, which can be compressed with Propack, CrunchMania or FImp
- Quit game at any time (default key F10), including on 68000 machines
- Rob Northen Copylock v1/v2 removed (depending on version)
- OS accesses removed
- Access fault fixed (incorrect CIAA address)
- Small fix to Level 3 (VBL) Interrupt routine
- Keyboard routine entirely rewritten to avoid game freezing bug
- Unnecessary delays removed
- Memory access bugs in music routine fixed
- CPU-dependent (empty DBF) loop in music routine fixed
- Toggle the ingame sound on/off with the TAB key
- Highscores loaded and saved (except when you cheat)
- Trainer modes:
  * Infinite Lives - set CUSTOM1=1
  * Invulnerability - press HELP during game to toggle on/off
- Rom/New/Color Icons by Captain HIT
- Source code included

HISTORY:
Version 1.1 (2024-08-04)
- Additional version (SPS 2120) supported (Mantis issue #4265)
- Updated to use WHDLoad 18+ with splash screen options
- Fixed game bug where sound effects played part way through
- Source code now included

Version 1.0 (2002-09-03)
- Initial release

A WORD FROM THE AUTHOR:

My original comment that this game "was hell personified to fix" still stands.
But I've learned a lot more in the intervening 22 years since I first patched
this game, so I'm more forgiving. :-)

The Rob Northen Copylocks differ depending on the release. The version I
originally patched was a v1, while a subsequent release (SPS #2120) uses
a v2 copylock. In both cases game code is decrypted inside the copylock, so
not just a case of wiring a key!

The game itself has issues. It randomly froze due to misuse of CIA timers.
The sound effect engine is not great (one channel used for most sfx, which
basically ends up dominated by an explosion). Plus other random bits that
needed fixing.

The actual game isn't all that bad, a light shoot-'em-up which doesn't
really reward a great deal, and is certainly no Silkworm/SWIV, but a
short diversion nonetheless.

Greetings to Codetapper, Galahad, Wepl and the rest of the WHDLoad team!
Thanks to Codetapper and Galahad in particular for our discussions back in
2002 about the possible problems behind the freezing.

-- DJ Mike (4th August 2024)

         Bug report form, full WHDLoad package and other installs:
                          http://www.whdload.de/

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