Make erase_count optional with variable size

ibm2030 / SimpleSDHC

A basic SD Card SPI interface in VHDL, supports SD V1, V2 and SDHC

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Make erase_count optional with variable size #2

Open ibm2030 opened 10 years ago

ibm2030 commented 10 years ago

Allow erase_count to be omitted (in which case it is always 1 and the corresponding message is never sent) and allow its length to be specified as a generic parameter.