On Sun, Feb 21, 2021 at 6:03 AM Gregory Nutt wrote:
>
>
> > Greg I was thinking about going the module route so I could use the eZ80F91
> > (same chip Byron is using). Sounds like I should just start getting some of
> > the parts together, the board cost is not too bad which is nice. I know a
> >
Greg I was thinking about going the module route so I could use the eZ80F91
(same chip Byron is using). Sounds like I should just start getting some of
the parts together, the board cost is not too bad which is nice. I know a
few other people around who would probably also be interested even ou
Greg and Byron,
Thanks for the info.
Greg I was thinking about going the module route so I could use the eZ80F91
(same chip Byron is using). Sounds like I should just start getting some of
the parts together, the board cost is not too bad which is nice. I know a
few other people around who would p
My hardware is an eZ80F91 ASSP CPU at 50MHz (but I used a 50MHz oscillator,
the PLL is unused) with SPI SD reader, Ethernet PHY, dual UARTs. Most of
what I'm looking at would be applicable with the z20x with an eZ80 CPU, but
relatively little would apply to the other CPUs you might use.
Software w
Another thing that I did not get around to was implementing the driver
for SSD1963 LCD. That was a lot of my motivation. The SSD1963 has a
framebuffer memory interface so, given proper DMA, ought to perform
well. I am not sure if the eZ80F92 has the horsepower to make it work
well, however.
I was in the middle of working with this with Konstantin when COVID
stopped everything.
We had just changed the crystal from 20MHz to 18MHz (as I recall) so
that the RAM could run with a single wait state. I was implementing a
bootloader that would reside on-chip. It would copy programs from
I saw that Greg had started initial support for this retro computer a
year ago and I was curious if anyone else has experience with it. I
was considering doing a board run and building one for myself and
would be happy to build a few if there are people interested since I
will have to order multip
