[Coco] Re: Undocumented opcode $3E
Arthur Flexser
flexser at fiu.edu
Mon Jan 26 13:37:23 EST 2004
On Mon, 26 Jan 2004, Torsten Dittel wrote:
> Already found that one:
>
> $3E Inherent RESET - Jumps to the reset handler.
> - Stacks all registers, without setting the E-bit
> in CC.
> - Then sets the F and I interrupt masks
> - Then jumps to the reset handler.
> Unlike a hardware reset, the NMI is not
> masked until the first load of SP.
>
>
> Any further details, comments?
>
A comment is that it doesn't work with a 6309; you get vectored to the
illegal opcode handler.
Art
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