[Coco] [Color Computer] Another flaky question: RAM "snapshot" device

[Steven Hirsch]

On Wed, 18 Feb 2009, David Bush wrote:


> I would like to be able to disassemble and modify these

> programs so they can run off my hard drive. To that end,

> I have in mind a hardware device which would work as

> follows: I load and run the software. While it is

> running, I push a button, and the CPU receives a

> non-maskable interrupt. The address of the NMI routine

> is also changed, so control is transferred to another

> program while the copy-protected program is still

> sitting in RAM. I could then transfer RAM to a disk file

> to examine and disassemble at my leisure.


I'm surprised that such a thing doesn't already exist.  There were many 
NMI based "cracker" devices for the Apple 2, and that platform could 
support some very bizarre protection schemes!

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