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Old 15 January 2020, 16:17   #21
CFOU!
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Quote:
Originally Posted by ross View Post
Blitter can do some basic math (with big effort just to do a sum ).
And can modify copper list, so probably a full simple math program can be done.
But I certainly don't try it
an example of Blitter access via a copper list

DragonLair's protection use a big copperlist (in my memory 40ko with Blitter DMA registers) to decrypt main code and erase current CPU code blocked by STOP instruction.

A big self modifying code !
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Old 15 January 2020, 16:21   #22
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Originally Posted by NorthWay View Post
I had this rough idea that you could do a complete blitter+copper basic logic building blocks where you run a simple demo purely by them with the cpu halted with a STOP instruction.
"You can now remove your cpu."
used in Dragon's lair protection ;=)
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