[Coco] Utility of large MPI

[Mark Marlette]

I had a hacked up single card that had 4 ports on it and ran it all the time back in the day.

The ones I am working with now are 2M baud, eight on a chip with DMA. I haven't pushed them that hard yet. My target is not 8 channels either.

I have to get my RocketPort card out to really force the data to/from it.

Regards,

Mark Marlette
http://www.cloud9tech.com
mark at cloud9tech.com



________________________________
From: RETRO Innovations <go4retro at go4retro.com>
To: CoCoList for Color Computer Enthusiasts <coco at maltedmedia.com> 
Sent: Wednesday, February 3, 2016 1:30 PM
Subject: Re: [Coco] Utility of large MPI


On 2/3/2016 9:13 AM, Barry Nelson wrote:
>   My thoughts/ramblings.
>
>   It is fairly easy to implement a SD/MMC interface using SPI if emulating a floppy controller is not required. If floppy emulation is desired then it becomes more complex, however floppy emulation is necessary to run many pieces of software since they access the floppy controller directly. A real time clock is one thing I miss on my CoCo SDC that I had on my original Burke & Burke HD controller. An ethernet interface could be implemented fairly easily in a limited fashion using a serial to wifi chip to allow telnet, or implement the DriveWire protocol on an Arduino and use that to interface to wifi or ethernet. I think that cramming to much functionality into one device could make it too expensive though. The ethernet interface could be a separate device. I wish the CoCo SDC included a realtime clock however. I think a parallel port would be of limited use at best, a second serial interface would be much more useful, though still of limited value.
>
What about a serial interface that can do 230kbps?

And, is compatible with the RS232Pak?

How many rs232 paks can OS/9 handle? 2?

Jim


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