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Fixes Sega HD reader #35

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Merged
mkalkbrenner merged 2 commits into from
Feb 1, 2026
Merged

Fixes Sega HD reader #35

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68fe1b7
reverse rdata irq trigger
PastorL69 Jan 31, 2026
4da01b9
Sega HD reader confirmed working, added to readme
PastorL69 Feb 1, 2026
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2 changes: 1 addition & 1 deletion README.md
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Expand Up @@ -12,7 +12,7 @@ Since not any consumer (especially the Raspberry Pi) can act as an SPI slave thi

* WPC95 & WPC -> 128x32
* Data East -> 128x32
* Sega -> 128x32
* Sega -> 128x32 & 192x64
* Stern Whitestar -> 128x32
* Stern SAM -> 128x32
* Stern SPIKE 1 -> 128x32
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2 changes: 1 addition & 1 deletion src/dmd_interface_sega_hd.pio
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Expand Up @@ -34,7 +34,7 @@ dotloop:
; Frame detection program runs in parallel to the reader program and signals the start of a new frame using an IRQ.
.program dmd_framedetect_sega_hd
.wrap_target
wait 1 gpio RDATA
wait 0 gpio RDATA
wait 1 gpio RDATA
irq FRAME_START_IRQ
.wrap
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