[atari7800] Question about encryption area
- From: debrodennis@xxxxxxxxxxx
- To: atari7800@xxxxxxxxxxxxx
- Date: Thu, 29 Jul 2004 18:27:19 +0000
Hi all,
In the 3600 documentation it says that 128 bytes from $FF7A - $FFF9 should be
set to zero for the data encryption. I've noticed in the sample code that's
been supplied here that not all this area is reserved. Is it a must that it has
to be reserved? I think Eric reserves this area starting at $FF80.
I also see in Dan Boris' examples he has $FF at $FFF8 for region verification.
What is this? And the next byte is the MSB of where the ROM starts + 7
:confused: Does all this get done automatically by 78sign?
Another question...I ran Joust through Distella and it has $E7 in $FFF9 but the
ROM starts at $8000. Shouldn't $87 be in location $FFF9?
Please understand that I'm running these samples through an emulator (MESS) and
they run fine. I don't know what happens on the real hardware. I missed out on
the CC2 run :-(
Take care,
Dennis
Other related posts:
