[Coco] 6309 port of NitrOS-9 Level 1

[Tormod Volden]

On Thu, Jul 23, 2015 at 9:11 PM, Tormod Volden wrote:
> On Thu, Jul 23, 2015 at 7:55 PM, Al Hartman wrote:
>> You can change out the opto-isolator chip in the Coco 1 to give it a nice
>> speed boost for DW operations.
>
> As I said, it is the bit-banger op-amp that must be replaced. To my
> knowledge there is no opto-isolator in the coco1.
>
> Googling "coco1 op-amp 57600 baud" coughs up this excellent
> explication from Gene:
> http://comments.gmane.org/gmane.comp.hardware.tandy.coco/91945

And for new readers :p a list of possible replacements was posted here:
http://comments.gmane.org/gmane.comp.hardware.tandy.coco/69225

Tormod