[rescue] SBusFPGA update: USB Host, 256 MiB DDR3 RAM disk, ... (Was: Re: A SBus card for SPARCstation designed in 2020...)

[Joshua Boyd]

On 8/25/21 12:19 PM, Romain Dolbeau wrote:
> Le lun. 23 aoC;t 2021 C  16:17, Alexander Jacocks <jjacocks at gmail.com> a
> C)crit :
>> I'm very interested to see how this board comes out, as well.
> I'm probably going to do a test of V1.2 soon - but production and
> shipping from China will likely take a couple of months at least (!).
> I'll report on that when its here.
>
> Then if this new version works, maybe a small batch could be made for
> those interested in playing with the design (there has been off-list
> discussions to that effect).
>
> Though I'm frustrated I don't have the PCB design skills to have an
> HDMI interface; the gateware could easily include a dumb framebuffer,
> perhaps fully emulating a cg3.


You may be selling yourself short on what it takes to do HDMI. The 
youtube video I will include the URL for[0] shows someone bit banging 
HDMI from a Raspbery Pi Pico using breadboard, and throughhole resistors.

I suspect that this means if you gave it a shot, it would at least work 
at lower resolutions. If it didn't and you didn't want to try again, you 
could just leave it unpopulated.

[0] https://www.youtube.com/watch?v=GyZS_efRyiY