Re: A86: Interrupts

To: assembly-86@lists.ticalc.org
Subject: Re: A86: Interrupts
From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>
Date: Tue, 08 Dec 1998 00:19:28 +0100
Delivered-To: assembly-86-outgoing@towerguard.unix.edu.sollentuna.se
In-Reply-To: <l03130301b291e3d86a5a@[129.64.143.204]>
References: <199812060911.KAA103940@kleopatra.acc.umu.se> <d3274cef.3669f648@aol.com>
Reply-To: assembly-86@lists.ticalc.org


At 15:59 1998-12-07 -0400, you wrote:
>
>>Disabling the interrupts will not gain much speed, unless there's a badly
>>written user installed interrupt. The most common reason to disable
>>interrupts is probably to use the IY register and the shadow registers.
>>
>Are you sure about this? As I recall, when I checked this, the interrupt on
>my TI-86 (no user-interrupts or anything installed) ate almost 1/3 of the
>CPU cycles. . .

Yes, I'm pretty sure about this... I would estimate the interrupt to
use about 1/100 or so of the CPU cycles.

--
Real name:     Jimmy Mårdell         
Email:         mailto:yarin@acc.umu.se
Homepage:      http://www.acc.umu.se/~yarin/

Icarus Productions homepage: http://icarus.ganymed.org/

References:

Re: A86: Interrupts

From: Jimmy =?iso-8859-1?Q?M=E5rdell?= <yarin@acc.umu.se>

A86: Interrupts

From: ZeromusMog@aol.com

Re: A86: Interrupts

From: Josh Grams <j3grams@earthling.net>