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Megademo 2 - Illemmings< >Megademo 4

Megademo 3 (Alcatraz)

download the install packageAlcatraz_Megademo3.lha
created at2014-01-05
size of install package26477 Bytes
Author/Contact
(use it to report problems with that install)
StingRay
Mantis BugTracker1242
BitWorld3264
Pout14533
download images for that installftp.amigascne.org


 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.

 Requirements:
 -------------
 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=").


 Features:
 ---------
 - 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 (x15)
 - 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.
 Sting, 04-Aug-2013



 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! :)



 History:
 --------
 
 version 1.01 (05.01.2013)
 - 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



 Contact:
 --------
 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:
	http://www.whdload.de/
 or	aminet:dev/misc/whdload#?
 and	aminet:game/patch/

Icons contained in install package

WHDLoad Slave information
Megademo3.slave - 05.01.2014 10:03:12 - 2080 bytes
required WHDLoad version17
flagsNoError ClearMem
required Chip Memory512 KiB ($80000)
Expansion Memory0 KiB
info nameMegademo 3
info copy1989 Alcatraz
info installinstalled by StingRay/[S]carab^Scoopex
Version 1.01 (05.01.2014)
Kickstart name0
Kickstart size0 KiB ($0)
Kickstart checksum$0000
Configuration

Install Archive Content Listing
UnpackedLvlMethodPackedOSDate/TimeName
15841lh51046Amiga2007-09-05 22:15:12Megademo3_Install.info
348151lh58719Amiga2013-08-04 16:49:20Megademo3_Install/Install
7101lh5354Amiga2013-08-04 16:42:14Megademo3_Install/Install.info
3161lh5250Amiga2013-08-04 16:38:18Megademo3_Install/Megademo3.islave
125071lh54646Amiga2013-08-04 16:43:22Megademo3_Install/Megademo3.newicon
20801lh51533Amiga2014-01-05 10:03:12Megademo3_Install/Megademo3.slave
39651lh52098Amiga2014-01-05 10:07:56Megademo3_Install/ReadMe
19901lh51310Amiga2000-09-10 23:37:22Megademo3_Install/ReadMe.info
27991lh5987Amiga2013-08-04 13:38:44Megademo3_Install/Source/Megademo3_ImagerSlave.s
149121lh54871Amiga2014-01-05 10:01:40Megademo3_Install/Source/MegaDemo3_WHD.s

Old Install Archives
Alcatraz_Megademo3-20130804.lha

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last change : 2015-12-23
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