Re: A86: Maskable Interrupts


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Re: A86: Maskable Interrupts




In a message dated 1/1/99 9:38:11 PM Eastern Standard Time, TGaArdvark@aol.com
writes:

> Does anyone know if the TI-86 shuts off maskable interrupts
>  when off?  I know we've discussed this a billion times before,
>  but we've never come to a consensus (to my knowledge) and
>  I don't think anyone's actually bothered to test it for themselves.
>  Basically I'm asking if the 1/200s interrupts occur when the
>  calc is off.  I've heard both yes and no (as well as a bunch of
>  dunno's and don't care's) from people who usually know what
>  they are talking about.  As I remember, the last time we dis-
>  cussed it, we seemed to be leaning toward yes, the 1/200s
>  interrupts do occur when the calc is off.

if they did run, then it would never shut down.  the "off" state is when the
screen is turned off, the interrupts are disabled (not all of them), and the
halt waits for an interrupt.  it would never shut off if once every 1/200th of
a second an interrupt occurred.