[Coco] Tcp off-loading on CoCo

[Lee Patterson]

Would it be possible to assign a configurable address range that the coco would read from instead of single byte/words? Could that be mapped using the Coco3's MMU?

One thought, the card is mapped to &HC000-&HXXXX. Could 256 bytes of that be the input and another 256 be the output?

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> On Apr 13, 2017, at 12:55, Zippster <zippster278 at gmail.com> wrote:
> 
> Yes, on the CoCo1/2 interrupts generated by the keyboard PIA go to IRQ. 
> The DAC PIA handles the cart interrupt and goes to FIRQ.
> 
> - Ed
> 
> 
>> On Apr 13, 2017, at 11:44 AM, William Astle <lost at l-w.ca> wrote:
>> 
>> On 2017-04-13 10:29 AM, L. Curtis Boyle wrote:
>>> The cart interrupt might be a better option (it can be IRQ, not just FIRQ, right?), as you can shut that on or off at will. So, if a routine knew that polling would be better for it’s situation, it could shut the IRQ off, and poll. If it preferred an IRQ (to block read a bunch of data after completed packets are in - read it like a disk drive sector), it could do that as well.
>> 
>> The cart interrupt is hard wired to the FIRQ on the coco1/2 (via PIA1 I believe). On the coco3 it can be routed to IRQ, FIRQ, both, or neither through the GIME.
>> 
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