[Coco] DriveWire

Tormod Volden lists.tormod at gmail.com
Sat Feb 20 17:24:54 EST 2016

On Sat, Feb 20, 2016 at 9:58 PM, Bill Pierce via Coco wrote:
> Tormod, what you are probably not aware of is that VCC does not speed up the hardware clock. When the CPU is overclocked, the hardware clock remains the same speed and is not accelerated with the CPU. So any sofware using the hardware clock will not be affected, but software using software timing loops will be affected. I'm not sure if DW drivers are affected by this, but I run at 89mhz in NitrOS9 most of the time and have seen no timeout issues.

I was not even aware there was a hardware clock! Is this a timer IC on
the CoCo3? The Dragon and CoCo1/2 certainly have no hardware clock.

The DW drivers in HDBDOS just use CPU cycles for timing.


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