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 Arcadia Team.
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 (+0.8 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
- OS stuff patched
- Interrupt and DMA settings fixed
- Bplcon0 color bit fixes (x4)
- DMA wait in replayer fixed (x8)
- Byte write to volume register fixed (x12)
- Blitter waits added (x24)
- Sprite bugs fixed
- CPU dependent delay loops fixed (x4)
- 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
Started in 2013, continued in 2017 and finally restarted from scratch
in April 2022 and finished within a few days. Demo code is quite OK
for its day, there were annoying sprite problems though. These were
caused by uninitialised sprite pointers in the copperlists (sprite pointers
were only set for sprites that were used, all others remained in random
state causing ugly glitches). Other than that there were lot of wrong
DMA settings (almost all parts enabled all DMA by writing $ffff to DMACON)
and the usual replayer bugs to fix.
Latest sources for this patch can be found on my GitHub repository at
version 1.00 (20.04.2022) done by StingRay:
- initial release
If you have problems with this installation please try and get a newer
version of this package from the WHDLoad WWW-Page.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: