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Altera_Forum's avatar
Altera_Forum
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16 years ago

Verilog Help

Hey Guyz! I need some help with verilog coding. i got this code off opencore website that teaches us how to code a sd card controller.Below shows 2 of the verilog file. A) spiMaster_defin...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Are you a C programmer? If so, the equivalent code for A) in C would be: 


# ifdef SIM_COMPILE
# define SD_INIT_START_SEQ_LEN 0x03
# define MAX_8_BIT 0x08
# else
# define SD_INIT_START_SEQ_LEN 0xa0
# define MAX_8_BIT 0xff
# endif

So the value of SD_INIT_SEQ_LEN is either 3 or 160 depending on whether or not SIM_COMPILE is defined.

Most likely the designer defines the macro "SIM_COMPILE" when he wants to run a simulation because it takes less time.

Jake