[Coco] Speed up and slow down POKE

[Robert Gault]

Larry Osborne wrote:
> ----- Original Message ----- 
> From: "Mannequin*" <mannslists at invigorated.org>
> To: "cocomedia" <coco at maltedmedia.com>
> Sent: Monday, August 02, 2004 6:44 PM
> Subject: [Coco] Speed up and slow down POKE
> 
> 
> 
>>Could someone remind me if I have the speed up and slow down POKE right
>>for the Coco 3?
>>
>>Speed up:  POKE 65497,0
>>Slow down: POKE 65495,0
>>
>>I think the speed up is right, but I don't think if I have the slow down
>>one correct.
>>
>>Thanks.
>>-M.
>>
>>-- 
>>Coco mailing list
>>Coco at maltedmedia.com
>>http://five.pairlist.net/mailman/listinfo/coco
>>
> 
> 
> As my memory goes
> 
> Whole memory (always works on a CoCo 3 - may fail on a CoCo 1 or CoCo 2)
>     Speed up (double speed) POKE 65467, any digit
>     Slow down (normal speed) POKE 65496, any digit
> 
> Half Memory (RAM double speed -bottom half of memory; ROM normal speed -top
> half of memory)  ( Works on all CoCo's but of limited use on a CoCo 3)
>     Speed up (double speed) POKE 65495, any digit
>     Slow down (normal speed) POKE 65496, any digit
> 
> 0 was the normal digit used but the digit had no real effect, rather it was
> the POKEing the location that had the effect.
> 
> I hope this helps.
> 
> Larry Osborne
> 
> 
> 

The full fast poke will work on any Coco but you will lose video output 
when at fast speed on a Coco1. I've written several programs which use 
this poke and video returns when you drop back to normal clock speed.