Hi Greg,
Almost anything is possible with enough effort. The things to be
identified / solved in a Pi Zero "hat" for the M100 BUS would be a PCB that:
1. Fits in the limited space of the M100 expansion bay.
2. Provides the power needed by the Pi Zero.
3. Solves the 5V / 3.3V level translation (the Pi inputs are not 5V
tolerant).
4. Software upgradability.
5. The ability to hang mini HDMI and USB cables from the thing without
pulling the board out of the expansion bus socket.
6. A software stack on the Pi to decode the 8085 bus. Possibly need a
CPLD for this.
Ken
On 9/17/18 6:33 AM, Greg Swallow wrote:
1. Still getting duplicates.
2. As for the modern replacement for a DVI, it seems that we're working on a
quicker/smaller tennis shoe network. Certainly good ideas all, but there is
very little software that actually takes advantage of 80 columns and 25 lines
for the M100. Somewhere in the thread I thought there was mentioned of a
version PI used with mComm? Has anyone look into the PI Zero W? I have been
trying to find more detailed specs (measurements) as the PI Zero line does have
a HAT compatible 40 pin bus;
https://cdn.sparkfun.com/assets/learn_tutorials/6/7/4/PiZero.png . Seems to me
there might be a way to have a PI Zero plugged into the M100 BUS and leave it
there. Ports (HDMI, USB) could be extended to allow access through the M100
case. Unplugged it acts as an internal TPDD and plugged in it's all a desktop.
Don't know if Raspbian would be able to handle it, but there has to be version
of Linux that could.
Just a thought,
GregS <><
