[Coco] Newbie doubt OS-9 Level 1 and the CoCo 2

[Juan Castro]

Man. I completely forgot the 60Hz interrupt. I'm rusty.

On Thu, May 31, 2012 at 3:03 AM, William Astle <lost at l-w.ca> wrote:

> On 12-05-30 11:40 PM, Juan Castro wrote:
>
>> I never used OS-9. Does it multitask on the CoCo 1/2? If so, how is it
>> able
>> to? CoCos, pre-Coco 3, didn't have timer interrupts. Was it cooperative
>> multitasking?
>>
>
> The only requirement to do preemptive multitasking is a regular interrupt
> you can use to trap back to the system. A programmable timer is not
> required. All cocos have a 60Hz (50Hz in some countries) interrupt.
>
>
>
>
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