UART CORE FOR NIOS

UARTs are easy. These work at 19.2k on a Spartan 2e clocked at 24MHz, IIRC. If you want FIFOs and all that fancy stuff you'll have to add them -- these are just basic UARTs that expect to be backed up by logic that's just sitting around waiting for a job to do.

I'm a beginner at verilog design; apparently that means that I had trouble remembering how to make comments...

/**********************************************************************

asyncSer.v

Description:

Various handy utility modules.

`define IDLE_BIT 0 `define START_BIT 1 `define DATA_BIT 2 `define STOP_BIT 3

module asyncTx(clock, reset, data, write, txd, rts, empty); parameter baudDiv = 11'd1280; input clock; input reset; input [7:0] data; input write; output reg txd; output reg rts; output reg empty;

reg [7:0] shift; reg [2:0] count; reg [1:0] state; reg [10:0] baud;

always @ (state) empty = state == `IDLE_BIT;

always @ (posedge reset or posedge clock) begin if (reset) begin rts

You could try using the opencores 16550. Having a wishbone interface it wraps nicely into a SOPC component...

Regards, Mark

Seemes strange to me. The UART supplied in SOPC builder, under Communication, on my system can be configured for up to 115200bps. It might not have a FIFO, but it supports streaming, so you should be able to connect it to your own FIFO.