Re: A86: 5MHz


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Re: A86: 5MHz




In a message dated 12/27/99 4:22:19 PM Mountain Standard Time, 
kirkmeyer@bigfoot.com writes:

> Well, after performing a few tests. The TI-86 does not appear to run at
>  6Mhz. With totally new batteries, the CPU was clocked at about 4.8MHz. 
(With
>  older batteries it is more like 4MHz.) This was tested with a routine that
>  took 360,000,000 t-states. This means one of two things.
>  
>  [A] TI is lying. I doubt this, since I don't think they make 5Mhz
>  processors. (maybe they do?) Also I doubt why TI would lie anyway.
>  
>  [B] Something is eating up that much processor time (this is with 
interrupts
>  disabled by the way). Try the code for yourself, it's at the bottom...

Perhaps the Z80 is slower with interrupts disabled???  Try installing an IM 2 
interrupt handler which does nothing, and see if the same results appear...

JayEll


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