Anyone like to help understanding this bootblock ???

Joe Maroni · 15 February 2007, 14:16

i need your help....

i´ve started to get understanding this bootblock yesterday but currently i´m hanging (no, not on the ceiling with a rope

)

what kind of copy protection is this ????

and did i understand everything right now...???

Toni Wilen · 15 February 2007, 15:37

It is hardware trackloader, nothing to do with copy protections.

6011E -> load and decode track
601CE-> MFM decoding.

Basically does exactly same as http://eab.abime.net/showpost.php?p=299838&postcount=7

Joe Maroni · 15 February 2007, 17:33

This means that i looked to deep in code...

i just like to analyse the bootblock to find the trackloader...that means that it is starts on $2E

i just have to write a slave for WHDLoad that force the CPU to Supervisor and set the highest interrupt level, put the trackloader to $100 and the game should run...theoretical

am i right ???

that would be my first slave....

the method above works with _LVODoIo()
isn´t it a little bit more different..????

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15 February 2007, 15:37	#2
Toni Wilen WinUAE developer Join Date: Aug 2001 Location: Hämeenlinna/Finland Age: 49 Posts: 26,505	It is hardware trackloader, nothing to do with copy protections. 6011E -> load and decode track 601CE-> MFM decoding. Basically does exactly same as http://eab.abime.net/showpost.php?p=299838&postcount=7

15 February 2007, 17:33	#3
Joe Maroni Moderator Join Date: Feb 2003 Location: Germany Age: 44 Posts: 1,303	This means that i looked to deep in code... i just like to analyse the bootblock to find the trackloader...that means that it is starts on $2E i just have to write a slave for WHDLoad that force the CPU to Supervisor and set the highest interrupt level, put the trackloader to $100 and the game should run...theoretical am i right ??? that would be my first slave.... the method above works with _LVODoIo() isn´t it a little bit more different..????

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