collapseos/blk/600

SD Card driver

Load range: 602-616

This driver is designed for a ad-hoc adapter card that acts as a
SPI relay between the z80 bus and the SD card. That adapter is  
expected to pull CS low when something is written to SDC_CSLOW,
high on SDC_CSHIGH and to initiate a SPI exchange when a byte is
written to SDC_SPI, the result of that exchange being fetched   
with a read to SDC_SPI.

Through that layer, this driver implements the SDC protocol     
allowing it to provide BLK@ and BLK!.
Gather all RC2014 drivers into a single "RC2014 Recipe section" 2020-05-14 04:56:38 +10:00			`SD Card driver`

			`Load range: 602-616`
rc2014: improve SD card driver docs 2020-06-29 06:34:41 +10:00
			`This driver is designed for a ad-hoc adapter card that acts as a`
			`SPI relay between the z80 bus and the SD card. That adapter is`
			`expected to pull CS low when something is written to SDC_CSLOW,`
			`high on SDC_CSHIGH and to initiate a SPI exchange when a byte is`
			`written to SDC_SPI, the result of that exchange being fetched`
			`with a read to SDC_SPI.`

			`Through that layer, this driver implements the SDC protocol`
			`allowing it to provide BLK@ and BLK!.`