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collapseos
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Mirror of CollapseOS
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collapseos/blk/418

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  1. SPI relay driver

  2. 

  3. This driver is designed for a ad-hoc adapter card that acts as a

  4. SPI relay between the z80 bus and the SPI device. When writing

  5. to SPI_CTL, we expect a bitmask of the device to select, with

  6. 0 meaning that everything is de-selected. Reading SPI_CTL

  7. returns 0 if the device is ready or 1 if it's still running an

  8. exchange. Writing to SPI_DATA initiates an exchange.

  9. 

  10. Provides the SPI relay protocol. Load driver with "419 LOAD".