[Coco] CoCo 3 keyboard interrupt

[William Astle]

The one thing I don't have is a real hardware setup (that isn't in a box 
on the other side of the city) to make sure my understanding of the 
behaviour of the keyboard interrupt is correct. In particular, whether 
bit 7 of FF00 triggers the keyboard interrupt if it goes low (the 
joystick comparator input).

I also don't have a test case I can distribute, mostly because I can't 
be sure I'm right without testing on real hardware.

On 2018-10-25 09:49 AM, L. Curtis Boyle wrote:
>> 2018年10月25日(木) 8:21 tim lindner <tlindner at macmess.org>:
>>
>>> Does any one have code prepared to test the keyboard interrupt? Or
>>> know of a program that uses it?
>> I’ve heard reports it is broken in MAME. I’d like to fix it.
> 
> Tim - William Astle in the Discord group has done some specific programming with the GIME keyboard IRQ, and recently, so he may be the best to ask, as he has some test code, as well as explanations on to properly set it up and use it.
> 
> 
> On Oct 25, 2018, at 6:43 AM, Joel Rees <joel.rees at gmail.com> wrote:
>>
>> Did the Coco 3 have a keyboard interupt?
> Yes, it does. It was one of the GIME interrupt sources, and can be either IRQ or FIRQ.
> 
>