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Megademo< >Megademo

Megademo (Vision)

download the install packageVision_Megademo.lha
created at2013-08-20
size of install package27465 Bytes
Author/Contact
(use it to report problems with that install)
StingRay
BitWorld2392
Pout1469
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"  1989 Vision.

 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!)
 - All OS stuff patched
 - Decruncher (ByteKiller) relocated to fast memory and error check added (x7)
 - Hardware register setup/restore recoded
 - Self-modifying code fixed
 - DMA wait in replayer fixed (x7)
 - Byte write to volume register in replayer fixed (x5)
 - Access faults ($5dff058->$dff058) fixed (x2)
 - Timing fixed
 - Reset part can be enabled with CUSTOM1
 - CPU dependent delay loops fixed
 - Interrupts fixed
 - NewIcon (created by me)
 - Source code included as usual
 - Quit option that works on 68000 machines (default key is 'F10')

 And yet another patch for a classic demo is finished. I started this
 4 years ago in August 2009 shortly after I patched Vision's Megademo 2
 and then somehow forgot about it. Yesterday I restarted the work on the
 patch and ended up completely recoding it. I also coded a RawDIC imager
 for it as it now uses real files, back then I used a disk image.

 The code had a few problems, there were some CPU dependent delay loops
 used for timing, some parts used self-modifying code and 2 of the parts
 caused an access fault because of a typo, instead of $dff058 $5dff058
 was used, no problem on 68000 machines but on true 32 bit machines this
 will not work anymore of course. Vision's second Megademo also has this
 problem. In some parts direct ROM access was used to acknowledge the
 interrupts, same problem as in Megademo 2 again. Most of the parts
 used a level 6 interrupt, since this caused problems for whatever reason
 I changed the level 6 interrupts to normal vertical blank interrupts.
 What else to say? It's quite a classic demo and I still enjoy the parts,
 the code isn't that advanced but there are some nice graphics (specially
 logos) and effects so enjoy!

 The reset part is supported, to enable it use the CUSTOM1 tooltype.

 The demo can be downloaded here:
 ftp://ftp.amigascne.org/pub/amiga/Groups/V/Vision/VISION-Megademo.dms

 Enjoy another classic demo from HD and have a nice summer everyone.
 Sting, 20-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 1.00 (20.08.2013) 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
Megademo.slave - 20.08.2013 15:17:32 - 2756 bytes
required WHDLoad version17
flagsNoError EmulTrap ClearMem
required Chip Memory512 KiB ($80000)
Expansion Memory0 KiB
info nameMegademo
info copy1989 Vision
info installinstalled by StingRay/[S]carab^Scoopex
Version 1.00 (20.08.2013)
Kickstart name0
Kickstart size0 KiB ($0)
Kickstart checksum$0000
ConfigurationC1:B:Run Reset Part

Install Archive Content Listing
UnpackedLvlMethodPackedOSDate/TimeName
15841lh51046Amiga2007-09-05 23:15:12Megademo_Install.info
348161lh58719Amiga2013-08-19 16:53:16Megademo_Install/Install
7091lh5354Amiga2013-08-19 16:52:16Megademo_Install/Install.info
3201lh5251Amiga2013-08-20 14:39:30Megademo_Install/Megademo.islave
147281lh54848Amiga2013-08-20 14:41:22Megademo_Install/Megademo.newicon
27561lh51847Amiga2013-08-20 15:17:32Megademo_Install/Megademo.slave
40491lh52156Amiga2013-08-20 15:54:08Megademo_Install/ReadMe
19901lh51310Amiga2000-09-11 00:37:22Megademo_Install/ReadMe.info
28181lh5985Amiga2013-08-19 19:29:14Megademo_Install/Source/Megademo_ImagerSlave.s
174861lh55301Amiga2013-08-20 15:17:26Megademo_Install/Source/Megademo_WHD.s

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last change : 2015-12-23
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