In SX Microcontrollers, SX/B Compiler and SX-Key Tool, dkemppai wrote:

OK, I'm trying to sort out a few ideas. 
 

Are the PC Shadow Stack (accessed via the secret instructions) and normal PC stack different? I find references on [url=http://www.sxlist.com]www.sxlist.com[/url] that says the PC Shadow stack used by PushPC is 2 levels deep, while the SK-Key Manual makes reference to the PC Stack being 8 levels deep (with the stack extended). 

 

If I pushPC ($04B) the contents to M and W to the stack, is this the same stack as used by the interrupt call instructions? Are they different? Any implications of me using PushPC and possible gotcha's you guys are aware of.

 

 

 

Thanks,

Dan

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