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Megademo< >Megademo

Megademo (Megaforce)

download the install packageMegaforce_Megademo.lha
created at2013-08-17
size of install package29287 Bytes
Author/Contact
(use it to report problems with that install)
StingRay
Pout10384
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"  1988 Megaforce.

 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
 - Blitter wait added
 - Decrunchers (ByteKiller, RLE) relocated and error check added
 - Color flashing during decrunching can be enabled with CUSTOM1
 - DMA wait in replayer fixed (x3)
 - Byte write to volume register in replayer fixed (x3)
 - DMA settings fixed
 - Interrupts fixed
 - CPU dependent delay loops fixed (x8)
 - Graphics problems caused by wrong load address fixed (part 2) 
 - 3 NewIcons (all created by me)
 - Source code included as usual
 - Quit option that works on 68000 machines (default key is 'F10')

 Finally this one is finished too, started it 3 days ago when I arrived
 at work and had an almost fully working patch after a while.
 Back home I tested it, fixed some minor things and encountered problems
 with 2 of the parts. These took a little while to fix as I had to
 find the reason for the problems. Part 2 had trashed colors which was
 caused by loading the part too high into memory. No idea why that
 caused the trashed colors but using a slightly lower load address
 fixed the problem. The other problem were graphics bugs in the
 scroller in part which appeared on fast machines. A blitter wait
 fixed the problem. There also were a few CPU dependent delay loops
 which I had to fix of course. Other than that there were no major
 problems with the code.

 All but one parts were crunched with ByteKiller, I have relocated
 the decruncher and added an error check, if decrunching fails WHDLoad
 will quit with an appropriate error message. If you like the flashing
 colors during decrunching that were in the original demo you can enable
 them with the CUSTOM1 tooltype. 1 part has been crunched with a simple
 ByteRun cruncher, I have relocated and slightly optimised that decruncher
 too but there's no error check.
 
 Apparently Crazy Typer's assembler had a bug as in the original
 ByteKiller decruncher the instruction to calculate the checksum
 (which wasn't checked anyway) was incorrect. Instead of "eor.l dx,dy"
 it was "cmp.l dx,dy".

 Enjoy yet another classic demo from HD and have a nice summer everyone.
 Sting, 17-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 (17.08.2013) 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 - 17.08.2013 13:31:32 - 1692 bytes
required WHDLoad version17
flagsNoError EmulTrap ClearMem
required Chip Memory512 KiB ($80000)
Expansion Memory0 KiB
info nameMegademo
info copy1988 Megaforce
info installinstalled by StingRay/[S]carab^Scoopex
Version 1.00 (17.08.2013)
Kickstart name0
Kickstart size0 KiB ($0)
Kickstart checksum$0000
ConfigurationC1:B:Color Flash During Decrunching

Install Archive Content Listing
UnpackedLvlMethodPackedOSDate/TimeName
15841lh51046Amiga2007-09-05 23:15:12Megademo_Install.info
348161lh58717Amiga2013-08-15 09:57:44Megademo_Install/Install
7091lh5353Amiga2013-08-17 13:41:10Megademo_Install/Install.info
3081lh5239Amiga2013-08-17 13:33:34Megademo_Install/Megademo.islave
125061lh52738Amiga2013-08-17 13:36:30Megademo_Install/Megademo.newicon
125061lh52990Amiga2013-08-17 13:36:54Megademo_Install/Megademo.newicon2
125061lh52141Amiga2013-08-17 13:37:30Megademo_Install/Megademo.newicon3
16921lh51256Amiga2013-08-17 13:31:32Megademo_Install/Megademo.slave
41551lh52158Amiga2013-08-17 13:56:56Megademo_Install/ReadMe
19901lh51310Amiga2000-09-11 00:37:22Megademo_Install/ReadMe.info
28431lh5992Amiga2013-08-14 07:24:16Megademo_Install/Source/Megademo_ImagerSlave.s
134761lh54561Amiga2013-08-17 13:31:24Megademo_Install/Source/Megademo_WHD.s

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last change : 2015-12-23
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