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Megademo< >Megademo

Megademo (Brainstorm)

download the install packageBrainstorm_Megademo.lha
created at2022-11-27
size of install package28704 Bytes
Author/Contact
(use it to report problems with that install)
StingRay
BitWorld685
Pout10302
download images for that installftp.untergrund.net
ftp.untergrund.net


 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"  1990 Brainstorm.

 Requirements:
 -------------
 This install requires WHDLoad and DIC 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 (+1.8 MB for preload).
 It can be quit by pressing F10 (key can be changed with Tooltype "QuitKey=").


 Features:
 --------
 - Full load from HD
 - Protection removed (trace vector decoder in loader part)
 - OS stuff emulated (DoIO)
 - Self-modifying code fixed
 - Byte writes to CopJmp1 fixed (x3) 
 - Bplcon0 color bit fixes (x10)
 - Wrong copper wait for PAL area fixed
 - Wrong raster line waits fixed (x3)
 - Line drawing problem in part 5 (caused by level 3 interrupt) fixed 
 - DMA wait in replayer fixed (x9)
 - Byte write to volume register fixed (x9)
 - Blitter waits added (x5)
 - CPU dependent delay/timing loops fixed (x5)
 - Interrupts fixed
 - All decrunchers (ByteKiller) relocated to fast memory and error check added
 - NewIcon (created by me)
 - Source code included (also on my GitHub: https://github.com/MK1Roxxor/WHDLoad_Patches)
 - Quit option that works on 68000 machines

 This is an old favorite of mine, always liked this demo. Started to create
 a patch for it years ago, but never finished it. Some days ago Keito asked
 for a patch for this very demo, so I started from scratch and finally
 finished the patch for this nice demo.
 Worth mentioning is that the loader part was protected with a trace vector
 decoder, something not too common for Amiga demos. Coding the decrypter was
 fun and didn't take that long, as I used the "educated guessing" approach
 to avoid the need to fully understand the trace vector code.
 Other than that, the code is quite good for a 1990 demo, there weren't too
 many problems to fix.

 The "Insert Disk 2" part has been disabled as it is no longer needed.
 If you want to see it, you can use the CUSTOM1 tooltype.


 Latest sources for this patch can be found on my GitHub repository at
 https://github.com/MK1Roxxor/WHDLoad_Patches/tree/master/Demos/Brainstorm_Megademo_WHD.s

 Enjoy the demo from HD and have a good festive season everyone,
 Sting, 27-Nov-2022 
 

 History:
 --------
 version 1.00 (27.11.2022) done by StingRay:
 - initial release



 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 - 27.11.2022 11:57:56 - 2048 bytes
required WHDLoad version17
flagsNoError EmulTrap ClearMem
required Chip Memory512 KiB ($80000)
Expansion Memory0 KiB
info nameMegademo
info copy1990 Brainstorm
info installinstalled by StingRay/[S]carab^Scoopex
Version 1.00 (27.11.2022)
Kickstart name0
Kickstart size0 KiB ($0)
Kickstart checksum$0000
ConfigurationC1:B:Enable "Insert Disk 2" Part

Install Archive Content Listing
UnpackedLvlMethodPackedOSDate/TimeName
15841lh51047Amiga2022-11-27 11:51:28Megademo_Install.info
406111lh510203Amiga2022-11-27 11:52:42Megademo_Install/Install
7091lh5353Amiga2022-11-27 11:52:04Megademo_Install/Install.info
188751lh55836Amiga2022-11-27 11:56:46Megademo_Install/Megademo.newicon
20481lh51528Amiga2022-11-27 11:57:56Megademo_Install/Megademo.slave
33911lh51832Amiga2022-11-27 12:42:36Megademo_Install/ReadMe
19901lh51310Amiga2022-04-20 20:57:56Megademo_Install/ReadMe.info
194691lh56084Amiga2022-11-27 00:38:28Megademo_Install/Source/Brainstorm_Megademo_WHD.s

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last change : 2023-03-02
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