[A83] Re: delay code

To: assembly-83@lists.ticalc.org
Subject: [A83] Re: delay code
From: "SUCKER [Pieter Van Nuffel]" <sucker_pvn@hotmail.com>
Date: Wed, 27 Mar 2002 12:44:58 +0000
Reply-To: assembly-83@lists.ticalc.org


> > Is it that significant when only nop's are executed with halt?
> > Then only the I register gets updated, am I right?
>
>A HALT waits for an interrupt. While waiting, it switches the Z80 into low
>power mode. Then when an interrupt is accepted, the interrupt routine is
>executed, which on its turn, returns to the code following the HALT
>instruction.
>
>On itself, HALT doesn't affect any registers.
>
>As for the I register, it is never changed except with LD I,A or when the
>Z80 is reset.
>
>

Yeah, I know. I meant the R (memory refresh) register.
But is the power that much lower when only nop's are
executed? What about the power that the LCD and his
driver consumes?


      SUCKER [Pieter Van Nuffel]


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