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bananaman
Indestructible


Calc Guru


Joined: 12 Sep 2005
Posts: 1124
Posted: 20 Nov 2008 03:30:27 pm    Post subject:
When I do a load command how are the flags altered?

Specifically I am loading to a with indirection...

Code:
ld a,(queueX)

I want to know if this will have updated the p/m so that I can test if it is negative. Or would I have to first do add a,0 before the flags are changed?
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benryves


Active Member


Joined: 23 Feb 2006
Posts: 564
Posted: 20 Nov 2008 03:37:54 pm    Post subject:
The only loads that affect the flags are LD A,I and LD A,R. You could use OR A to modify the sign flag after the load.

Last edited by Guest on 20 Nov 2008 03:38:18 pm; edited 1 time in total
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bananaman
Indestructible


Calc Guru


Joined: 12 Sep 2005
Posts: 1124
Posted: 20 Nov 2008 03:44:14 pm    Post subject:
Thank You
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