[Coco] Fwd: Shift-Break-Reset: Recollections from the CoCo 1 days

L. Curtis Boyle curtisboyle at sasktel.net
Sun May 3 17:47:00 EDT 2020

Thanks for posting this! I did know it back in the day, but had completely forgotten how it had worked (and somebody asked about a few months ago, and I couldn’t answer).

L. Curtis Boyle
curtisboyle at sasktel.net

> On May 3, 2020, at 3:25 PM, Arthur Flexser <flexser at fiu.edu> wrote:
> Here's a very interesting story from the CoCo 1 days, a bit of curious CoCo
> hackery known to very few people.  How many folks here (I'll guess: none)
> are aware that a 64K CoCo 1 or 2 can be fooled into booting up as a 4K CoCo
> by hitting reset while pressing certain combinations of keys?  And further,
> that this odd fact can provide a means of breaking out of a reset-protected
> program and obtaining a snapshot of the program's memory contents,
> providing a crucial shortcut for anyone wishing to circumvent the copy
> protection?

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