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@@ -1,3 +1,13 @@ |
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SD Card driver |
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Load range: 602-616 |
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This driver is designed for a ad-hoc adapter card that acts as a |
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SPI relay between the z80 bus and the SD card. That adapter is |
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expected to pull CS low when something is written to SDC_CSLOW, |
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high on SDC_CSHIGH and to initiate a SPI exchange when a byte is |
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written to SDC_SPI, the result of that exchange being fetched |
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with a read to SDC_SPI. |
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Through that layer, this driver implements the SDC protocol |
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allowing it to provide BLK@ and BLK!. |