txMem missing ports?

[yuz835]

Hi,
your txMem doesnt have tx_mem_addr_valid?
and also the tx_mem_data_valid ports?

how can you know when to read the buffer data, and also when the buffer data is ready?

spiifc mySpiIfc (
.Reset(Reset),
.SysClk(SysClk),
.SPI_CLK(spi_clk),
.SPI_MISO(spi_miso),
.SPI_MOSI(spi_mosi),
.SPI_SS(spi_ss),
.txMemAddr(spi_addr),
.txMemData(spi_data),
.rcMemAddr(spi_rcMem_addr),
.rcMemData(spi_rcMem_data),
.rcMemWE(spi_rcMem_we),
.debug_out(debug_out)
);

[yuz835]

I think you assume the read data is available in the next cycle of raddr.
This is not robust, and some ram/buffer might needs several cycles to read the data out

[mjlyons]

@yuz835 Hi Ethan -- it's been a while since I touched this code, and unfortunately I don't remember much about it 🤔 .