Re: retro hacking

[Stuart Bell]

On 6 Feb 2004, at 21:38, Tom Lee wrote:

Reverse-engineering the PALs is simple, but the ROMs are another 
story! The
Apple team used some very clever, and complex hacks for compressing and
encrypting.

Interesting change in Apple policy - from putting Apple II ROM listings 
in the manual.

Do you mean that the ROMs aren't pure M68000 code, but are decrypted on 
the fly (or, on boot, into RAM) before execution?

I'm surprised if no-one has dis-assembled the early Mac ROMs.  I had a 
great time doing that to the p-code interpreter and BIOS  in Apple 
Pascal on the AII, rewriting it for my own peripherals, and then 
assembling it again!

Stuart

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