[Coco] drivewire serial port progress

[Steven Hirsch]

On Wed, 11 Nov 2009, Aaron Wolfe wrote:


> After a long night of hacking I now have an interrupt based driver

> working, and it's working really well.  Took a lot of debugging but I

> learned much in the process.

>

> I used a buffer in the style of sc6551's, I think I can get dw to

> write straight into it in the future.  I somehow solved the issues

> with non VDG consoles, it now works fine with level 1 or 2, any

> console mode.  I also got rid of an occasional mysterious input bug.

> All in all, it's coming together fast.


I cannot wait to see this.  Nice work!


> For data/modem applications, there is another set of controls.  Can

> both be implemented at once, or will there need to be two

> modes/descriptors/something?


Are you talking from the Linux or CoCo side of things?  On Unix-y systems, 
I believe there are a set of ioctl functions to configure a tty device for 
console or raw data I/O.  On the CoCo side, there are folks a lot smarter 
than I am who'll have to answer :-).

The Unix view is documented reasonably well in Stevens' "Advanced 
Programming in the Unix Environment".

Steve


--