This article describes connecting a WIZnet W5500 Ethernet controller to Sega Dreamcast and NAOMI/NAOMI 2 systems using existing serial interfaces configured for SPI. The W5500 is used in MACRAW mode and provides raw Ethernet frame access. The driver has already been merged into KallistiOS master and will be supported in the next version of DreamShell.
Here are the tests through the network stack when copying a file via FTP:

• SCIF SPI: TX ~1000 KB/s (PIO), RX ~550 KB/s (PIO)
• SCI SPI: TX ~900 KB/s (DMA), RX ~1000 KB/s (partial DMA)

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This article describes a direct wiring connection between a standard IDE connector and the CN1 connector on the Sega NAOMI and NAOMI 2 motherboards.
Prepare in advance for the release of DreamShell 4.0.4 ;-)


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