?? jtag_uart.v
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//output files any of the foregoing (including device programming or
//simulation files), and any associated documentation or information are
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//including, without limitation, that your use is for the sole purpose
//of programming logic devices manufactured by Altera and sold by Altera
//or its authorized distributors. Please refer to the applicable
//agreement for further details.
// synthesis translate_off
`timescale 1ns / 100ps
// synthesis translate_on
module jtag_uart_log_module (
// inputs:
clk,
data,
strobe,
valid
);
input clk;
input [ 7: 0] data;
input strobe;
input valid;
//synthesis translate_off
//////////////// SIMULATION-ONLY CONTENTS
reg [31:0] text_handle; // for $fopen
initial text_handle = $fopen ("C:/designs/cf_tests/to_nios_forum/std_cf_2c35/std_2C35_sim/jtag_uart_output_stream.dat");
always @(posedge clk) begin
if (valid && strobe) begin
$fwrite (text_handle, "%b\n", data);
// echo raw binary strings to file as ascii to screen
$write("%s", ((data == 8'hd) ? 8'ha : data));
// non-standard; poorly documented; required to get real data stream.
$fflush (text_handle);
end
end // clk
//////////////// END SIMULATION-ONLY CONTENTS
//synthesis translate_on
endmodule
module jtag_uart_sim_scfifo_w (
// inputs:
clk,
fifo_wdata,
fifo_wr,
// outputs:
fifo_FF,
r_dat,
wfifo_empty,
wfifo_used
);
output fifo_FF;
output [ 7: 0] r_dat;
output wfifo_empty;
output [ 5: 0] wfifo_used;
input clk;
input [ 7: 0] fifo_wdata;
input fifo_wr;
wire fifo_FF;
wire [ 7: 0] r_dat;
wire wfifo_empty;
wire [ 5: 0] wfifo_used;
//synthesis translate_off
//////////////// SIMULATION-ONLY CONTENTS
//jtag_uart_log, which is an e_log
jtag_uart_log_module jtag_uart_log
(
.clk (clk),
.data (fifo_wdata),
.strobe (fifo_wr),
.valid (fifo_wr)
);
assign wfifo_used = {6{1'b0}};
assign r_dat = {8{1'b0}};
assign fifo_FF = 1'b0;
assign wfifo_empty = 1'b1;
//////////////// END SIMULATION-ONLY CONTENTS
//synthesis translate_on
endmodule
module jtag_uart_scfifo_w (
// inputs:
clk,
fifo_wdata,
fifo_wr,
rd_wfifo,
// outputs:
fifo_FF,
r_dat,
wfifo_empty,
wfifo_used
);
output fifo_FF;
output [ 7: 0] r_dat;
output wfifo_empty;
output [ 5: 0] wfifo_used;
input clk;
input [ 7: 0] fifo_wdata;
input fifo_wr;
input rd_wfifo;
wire fifo_FF;
wire [ 7: 0] r_dat;
wire wfifo_empty;
wire [ 5: 0] wfifo_used;
//synthesis translate_off
//////////////// SIMULATION-ONLY CONTENTS
jtag_uart_sim_scfifo_w the_jtag_uart_sim_scfifo_w
(
.clk (clk),
.fifo_FF (fifo_FF),
.fifo_wdata (fifo_wdata),
.fifo_wr (fifo_wr),
.r_dat (r_dat),
.wfifo_empty (wfifo_empty),
.wfifo_used (wfifo_used)
);
//////////////// END SIMULATION-ONLY CONTENTS
//synthesis translate_on
//synthesis read_comments_as_HDL on
// scfifo wfifo
// (
// .clock (clk),
// .data (fifo_wdata),
// .empty (wfifo_empty),
// .full (fifo_FF),
// .q (r_dat),
// .rdreq (rd_wfifo),
// .usedw (wfifo_used),
// .wrreq (fifo_wr)
// );
//
// defparam wfifo.lpm_hint = "RAM_BLOCK_TYPE=AUTO",
// wfifo.lpm_numwords = 64,
// wfifo.lpm_showahead = "OFF",
// wfifo.lpm_type = "scfifo",
// wfifo.lpm_width = 8,
// wfifo.lpm_widthu = 6,
// wfifo.overflow_checking = "OFF",
// wfifo.underflow_checking = "OFF",
// wfifo.use_eab = "ON";
//
//synthesis read_comments_as_HDL off
endmodule
module jtag_uart_drom_module (
// inputs:
clk,
incr_addr,
reset_n,
// outputs:
new_rom,
num_bytes,
q,
safe
);
parameter POLL_RATE = 100;
output new_rom;
output [ 31: 0] num_bytes;
output [ 7: 0] q;
output safe;
input clk;
input incr_addr;
input reset_n;
reg [ 11: 0] address;
reg d1_pre;
reg d2_pre;
reg d3_pre;
reg d4_pre;
reg d5_pre;
reg d6_pre;
reg d7_pre;
reg d8_pre;
reg d9_pre;
reg [ 7: 0] mem_array [2047: 0];
reg [ 31: 0] mutex [ 1: 0];
reg new_rom;
wire [ 31: 0] num_bytes;
reg pre;
wire [ 7: 0] q;
wire safe;
//synthesis translate_off
//////////////// SIMULATION-ONLY CONTENTS
assign q = mem_array[address];
always @(posedge clk or negedge reset_n)
begin
if (reset_n == 0)
begin
d1_pre <= 0;
d2_pre <= 0;
d3_pre <= 0;
d4_pre <= 0;
d5_pre <= 0;
d6_pre <= 0;
d7_pre <= 0;
d8_pre <= 0;
d9_pre <= 0;
new_rom <= 0;
end
else if (1)
begin
d1_pre <= pre;
d2_pre <= d1_pre;
d3_pre <= d2_pre;
d4_pre <= d3_pre;
d5_pre <= d4_pre;
d6_pre <= d5_pre;
d7_pre <= d6_pre;
d8_pre <= d7_pre;
d9_pre <= d8_pre;
new_rom <= d9_pre;
end
end
assign num_bytes = mutex[1];
reg safe_delay;
reg [31:0] poll_count;
reg [31:0] mutex_handle;
wire interactive = 1'b0 ; // '
assign safe = (address < mutex[1]);
initial poll_count = POLL_RATE;
always @(posedge clk or negedge reset_n) begin
if (reset_n !== 1) begin
safe_delay <= 0;
end else begin
safe_delay <= safe;
end
end // safe_delay
always @(posedge clk or negedge reset_n) begin
if (reset_n !== 1) begin // dont worry about null _stream.dat file
address <= 0;
mem_array[0] <= 0;
mutex[0] <= 0;
mutex[1] <= 0;
pre <= 0;
end else begin // deal with the non-reset case
pre <= 0;
if (incr_addr && safe) address <= address + 1;
if (mutex[0] && !safe && safe_delay) begin
// and blast the mutex after falling edge of safe if interactive
if (interactive) begin
mutex_handle = $fopen ("C:/designs/cf_tests/to_nios_forum/std_cf_2c35/std_2C35_sim/jtag_uart_input_mutex.dat");
$fdisplay (mutex_handle, "0");
$fclose (mutex_handle);
// $display ($stime, "\t%m:\n\t\tMutex cleared!");
end else begin
// sleep until next reset, do not bash mutex.
wait (!reset_n);
end
end // OK to bash mutex.
if (poll_count < POLL_RATE) begin // wait
poll_count = poll_count + 1;
end else begin // do the interesting stuff.
poll_count = 0;
$readmemh ("C:/designs/cf_tests/to_nios_forum/std_cf_2c35/std_2C35_sim/jtag_uart_input_mutex.dat", mutex);
if (mutex[0] && !safe) begin
// read stream into mem_array after current characters are gone!
// save mutex[0] value to compare to address (generates 'safe')
mutex[1] <= mutex[0];
// $display ($stime, "\t%m:\n\t\tMutex hit: Trying to read %d bytes...", mutex[0]);
$readmemb("C:/designs/cf_tests/to_nios_forum/std_cf_2c35/std_2C35_sim/jtag_uart_input_stream.dat", mem_array);
// bash address and send pulse outside to send the char:
address <= 0;
pre <= -1;
end // else mutex miss...
end // poll_count
end // reset
end // posedge clk
//////////////// END SIMULATION-ONLY CONTENTS
//synthesis translate_on
endmodule
module jtag_uart_sim_scfifo_r (
// inputs:
clk,
fifo_rd,
rst_n,
// outputs:
fifo_EF,
fifo_rdata,
rfifo_full,
rfifo_used
);
output fifo_EF;
output [ 7: 0] fifo_rdata;
output rfifo_full;
output [ 5: 0] rfifo_used;
input clk;
input fifo_rd;
input rst_n;
reg [ 31: 0] bytes_left;
wire fifo_EF;
reg fifo_rd_d;
wire [ 7: 0] fifo_rdata;
wire new_rom;
wire [ 31: 0] num_bytes;
wire [ 6: 0] rfifo_entries;
wire rfifo_full;
wire [ 5: 0] rfifo_used;
wire safe;
//synthesis translate_off
//////////////// SIMULATION-ONLY CONTENTS
//jtag_uart_drom, which is an e_drom
jtag_uart_drom_module jtag_uart_drom
(
.clk (clk),
.incr_addr (fifo_rd_d),
.new_rom (new_rom),
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