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GARTHWILSON
 Post subject: Re: Multiple interrupts?
PostPosted: Thu Aug 27, 2015 8:42 pm 
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BigDumbDinosaur wrote:
GARTHWILSON wrote:
The nice thing about using the stack is that you don't need variables space. The "variables" are on the stack, and when they're no longer needed, they cease taking any memory. Having a separate data stack in ZP makes it a lot less fiddly.

That will work as long as the function being called doesn't have to be recursive/reentrant.

I've done it in recursive/reentrant ones too.

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BigDumbDinosaur
 Post subject: Re: Multiple interrupts?
PostPosted: Thu Aug 27, 2015 11:36 pm 
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GARTHWILSON wrote:
BigDumbDinosaur wrote:
GARTHWILSON wrote:
The nice thing about using the stack is that you don't need variables space. The "variables" are on the stack, and when they're no longer needed, they cease taking any memory. Having a separate data stack in ZP makes it a lot less fiddly.

That will work as long as the function being called doesn't have to be recursive/reentrant.

I've done it in recursive/reentrant ones too.

I was referring to using zero page as a pseudo-stack.

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GARTHWILSON
 Post subject: Re: Multiple interrupts?
PostPosted: Thu Aug 27, 2015 11:50 pm 
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yeah, that too

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nkeck72
 Post subject: Re: Multiple interrupts?
PostPosted: Fri Aug 28, 2015 12:10 am 
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Thanks all for your help. I should have a github repo up next weekend, maybe before that. I don't have much code yet, so the BIOS won't look like much. :D

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nkeck72
 Post subject: Re: Multiple interrupts?
PostPosted: Sat Sep 12, 2015 6:40 pm 
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The GitHub page is up at https://github.com/nkeck720/6502-Machine-BIOS. Will be working on commits. Those who wish to send pull requests need to do so through GitHub. Commits will be going up soon! Also, does anyone happen to know where I can get a 6502 model for LTSpice IV?

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nkeck72
 Post subject: Re: Multiple interrupts?
PostPosted: Sun Sep 20, 2015 12:32 am 
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NOTICE: the old repo just went down due to SSH issues. The new repo is at the following URL:
https://github.com/nkeck720/6502-Machine-BIOS

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