> I was wondering what that warning screen was about when reading the update.
> Skull...Be Gone.
The program is scrambled. There is a segment that matches the RES, NMI, and IRQ vectors, and has valid code. This segment is a fake program that initialize both PIAs and the CRTC like in a Golden Poker board, using the offsets where these devices are normally mapped. They took all these efforts just to show the skull warning screen.
The real program is located in another segment, and initialize these devices in way different offsets, where this hardware has them mapped.
Robbie.
-- Risen from my grave --
|
Previous 
Index 
Next 
Flat 
Re: Roberto Fresca: Another day in the Paradise...
Reply
