Mike Bell
@rebelmike.bsky.social
Electronics tinkerer, narrowboater, puzzle hunter, board gamer and occasional geocacher.
Also on fedi @mike@rebel-lion.uk
Also on fedi @mike@rebel-lion.uk
Well, it blinks.
The whole you have to unplug it from your computer and plug it into an SD card slot that doesn’t act as an SD host to run the design thing may get old rather quickly.
The whole you have to unplug it from your computer and plug it into an SD card slot that doesn’t act as an SD host to run the design thing may get old rather quickly.
September 25, 2025 at 7:14 PM
Well, it blinks.
The whole you have to unplug it from your computer and plug it into an SD card slot that doesn’t act as an SD host to run the design thing may get old rather quickly.
The whole you have to unplug it from your computer and plug it into an SD card slot that doesn’t act as an SD host to run the design thing may get old rather quickly.
Been having lots of fun with @charlie.daft.games‘s Red Alert port for RP2350. I’ve got it working with my HSTX driver and just got PWM sound working as well!
March 28, 2025 at 6:07 PM
Been having lots of fun with @charlie.daft.games‘s Red Alert port for RP2350. I’ve got it working with my HSTX driver and just got PWM sound working as well!
Implemented interlaced modes, and palette support.
There is *just* enough bandwidth for 1080i50 with a 256 colour palette!
That’s full HD moving images using an RP2350 and two APS6404 PSRAMs for the frame buffers.
There is *just* enough bandwidth for 1080i50 with a 256 colour palette!
That’s full HD moving images using an RP2350 and two APS6404 PSRAMs for the frame buffers.
March 23, 2025 at 2:37 PM
Implemented interlaced modes, and palette support.
There is *just* enough bandwidth for 1080i50 with a 256 colour palette!
That’s full HD moving images using an RP2350 and two APS6404 PSRAMs for the frame buffers.
There is *just* enough bandwidth for 1080i50 with a 256 colour palette!
That’s full HD moving images using an RP2350 and two APS6404 PSRAMs for the frame buffers.
And at the somewhat non-standard 1080p30, there’s *just* enough bandwidth from the two PSRAMs to do the same!
March 22, 2025 at 3:54 PM
And at the somewhat non-standard 1080p30, there’s *just* enough bandwidth from the two PSRAMs to do the same!
Using both PSRAMs together we can get enough bandwidth for 720p. Can’t easily write to a back buffer while displaying though as the PSRAM is constantly busy, but can do an image slide show!
The RP2350 decodes the next jpeg from flash during the time the monitor is blank.
The RP2350 decodes the next jpeg from flash during the time the monitor is blank.
March 22, 2025 at 3:34 PM
Using both PSRAMs together we can get enough bandwidth for 720p. Can’t easily write to a back buffer while displaying though as the PSRAM is constantly busy, but can do an image slide show!
The RP2350 decodes the next jpeg from flash during the time the monitor is blank.
The RP2350 decodes the next jpeg from flash during the time the monitor is blank.
Got the double buffer, one in each PSRAM, up and running.
This is 800x600, RGB565, which is fairly close to maxing out the available bandwidth.
This is 800x600, RGB565, which is fairly close to maxing out the available bandwidth.
March 22, 2025 at 12:26 AM
Got the double buffer, one in each PSRAM, up and running.
This is 800x600, RGB565, which is fairly close to maxing out the available bandwidth.
This is 800x600, RGB565, which is fairly close to maxing out the available bandwidth.
My Tiny Tapeout 9 project running on the FPGA board.
Got to have some Bad Apple when testing new hardware!
Got to have some Bad Apple when testing new hardware!
March 21, 2025 at 6:25 PM
My Tiny Tapeout 9 project running on the FPGA board.
Got to have some Bad Apple when testing new hardware!
Got to have some Bad Apple when testing new hardware!