THIS PACKAGE COMES WITH ABSOLUTELY NO WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, STATUTORY OR OTHERWISE. THE ENTIRE RISK AS TO USE, RESULTS AND
PERFORMANCE OF THE PACKAGE IS ASSUMED BY YOU AND IF THE PACKAGE SHOULD PROVE
TO BE DEFECTIVE, YOU ASSUME THE ENTIRE COST OF ALL NECESSARY SERVICING,
REPAIR OR OTHER REMEDIATION.
UNDER NO CIRCUMSTANCES, CAN THE AUTHOR BE HELD RESPONSIBLE FOR ANY DAMAGE
CAUSED IN ANY USUAL, SPECIAL, OR ACCIDENTAL WAY, ALSO IF THE OWNER OR A THIRD
PARTY HAS BEEN POINTED AT SUCH POSSIBILITIES OF DAMAGE.
This install applies to "Megademo 3" © 1989 Alcatraz.
This install requires WHDLoad and RawDIC to be in the path.
These programs can be found in the WHDLoad package.
To install from a different drive than DF0: select installation mode Expert.
The installed demo requires 0.5 MB ChipMem (+0.7 MB for preload).
It can be quit by pressing F10 (key can be changed with Tooltype "QuitKey=").
- Full load from HD (real files!)
- Self-modifying code fixed
- Interrupts fixed
- DMA settings fixed
- Wrong blitter waits in part 4 (wrong branch) fixed (x16)
- Modulo bug in copperlist fixed (part 4)
- CPU dependent timing fixed
- Decrunchers (ByteKiller) relocated to fast memory and error check added
- Bplcon0 color bit fixes (x19)
- OCS only DDFSTART fixed
- Blitter wait added
- DMA wait in replayer fixed (x7)
- Byte write to volume register fixed (x10)
- Copperlist termination fixed (x3)
- Write to $dff000 disabled
- NewIcon (created by me)
- Source code included as usual
- Quit option that works on 68000 machines (default key is 'F10')
I had this patch more or less finished since October 2011 but back then
I couldn't be bothered to create the install package. Today I remembered the
patch, converted it to use real files, relocated all ByteKiller decrunchers,
added a few more fixes and finally created the install package too.
In this demo the effect commonly referred to as "Kefrens Bars" made its
first appearance. It always annoys me when someone uses "Kefrens Bars"
because this effect should be called "Alcatraz Bars" for obvious reasons!
Not that Detron's version of this very effect was bad, far from it, but he
did not invent it!
That being said, this is a classic demo which deserved to be patched.
The code isn't that bad but contains a few mistakes which had to be fixed.
One particular stupid bug were the blitter waits in part 4, due to a wrong
branch distance the code actually never waited for the blitter, I suppose
a buggy macro was used.
I have relocated the ByteKiller decrunchers and added an error check, if
decrunching fails WHDLoad will quit with an appropriate error message.
Enjoy this classic from HD and have a nice summer everyone.
Greetings to all in Scarab and Scoopex, the WHDLoad team, PMC,
Musashi5150, Skan, Slummy, Loaderror, Frequent, Wayne Kerr, Mr.Spiv,
Alpha One, CFou!, Paradroid and all the other usual suspects. :)
Special greetings to all Golf MK1 fans worldwide except those
lowlifes who "borrowed" my MK1 for a joyride!
Extra greetings to the usual suspects on #amigascne, see you all at
Revision 2014! :)
version 1.02 (14.04.2020)
- more Bplcon0 color bit fixes
- OCS only DDFSTRT fixed
- blitter wait added
version 1.01 (05.01.2014)
- 3 more byte writes to volume register fixed
- copperlist termination fixed in part 2, 5 and 6
- write to $dff000 disabled
version 1.00 (04.08.2013) done by StingRay:
- initial release
- source code included
If you have problems with this installation please try and get a newer
version of this package from the WHDLoad WWW-Page. If that doesn't help try
some Tooltypes like NOCACHE, NOAUTOVEC, EXPCHIP, NOMMU, PAL or NTSC. If
that also fails, please inform the author via the Bug-Report-Form which
can be accessed on the WHDLoad WWW-Page.
For the full WHDLoad package, other installs and updates refer to: