| 1 |
2 |
kdv |
/*
|
| 2 |
|
|
* mem_ctl.v
|
| 3 |
|
|
*
|
| 4 |
|
|
* Copyright (c) 2007 Koen De Vleeschauwer.
|
| 5 |
|
|
*
|
| 6 |
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
|
| 7 |
|
|
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
| 8 |
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
| 9 |
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
|
| 10 |
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
| 11 |
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
| 12 |
|
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
| 13 |
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
|
| 14 |
|
|
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
|
| 15 |
|
|
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
| 16 |
|
|
* SUCH DAMAGE.
|
| 17 |
|
|
*/
|
| 18 |
|
|
|
| 19 |
|
|
/*
|
| 20 |
|
|
* Dummy memory controller, used for simulation.
|
| 21 |
|
|
* Useful as template for writing your own memory controller.
|
| 22 |
|
|
*/
|
| 23 |
|
|
|
| 24 |
|
|
`include "timescale.v"
|
| 25 |
|
|
|
| 26 |
|
|
`undef DEBUG
|
| 27 |
|
|
//`define DEBUG 1
|
| 28 |
|
|
|
| 29 |
|
|
// initialize memory
|
| 30 |
|
|
`undef MEMORY_INIT
|
| 31 |
|
|
//`define MAGIC_NUMBER 1
|
| 32 |
|
|
|
| 33 |
|
|
// write framestore to file 'framestore_000.ppm' every time current_frame changes
|
| 34 |
|
|
`undef DUMP_FRAMESTORE
|
| 35 |
|
|
`define DUMP_FRAMESTORE 1
|
| 36 |
|
|
|
| 37 |
|
|
// write framestore to file 'framestore_001.ppm' every 200 macroblocks. requires DUMP_FRAMESTORE.
|
| 38 |
|
|
`undef DUMP_FRAMESTORE_OFTEN
|
| 39 |
|
|
//`define DUMP_FRAMESTORE_OFTEN 1
|
| 40 |
|
|
|
| 41 |
|
|
module mem_ctl(
|
| 42 |
|
|
clk, rst,
|
| 43 |
|
|
mem_req_rd_cmd, mem_req_rd_addr, mem_req_rd_dta, mem_req_rd_en, mem_req_rd_valid,
|
| 44 |
|
|
mem_res_wr_dta, mem_res_wr_en, mem_res_wr_almost_full
|
| 45 |
|
|
);
|
| 46 |
|
|
|
| 47 |
|
|
input clk;
|
| 48 |
|
|
input rst;
|
| 49 |
|
|
input [1:0]mem_req_rd_cmd;
|
| 50 |
|
|
input [21:0]mem_req_rd_addr;
|
| 51 |
|
|
input [63:0]mem_req_rd_dta;
|
| 52 |
|
|
output reg mem_req_rd_en;
|
| 53 |
|
|
input mem_req_rd_valid;
|
| 54 |
|
|
output reg [63:0]mem_res_wr_dta;
|
| 55 |
|
|
output reg mem_res_wr_en;
|
| 56 |
|
|
input mem_res_wr_almost_full;
|
| 57 |
|
|
|
| 58 |
|
|
`include "mem_codes.v"
|
| 59 |
|
|
|
| 60 |
|
|
reg [63:0]mem[0:END_OF_MEM]; /* memory, 64-bit wide. Simulation only, not synthesizable. Size depends upon mpeg2 profile. Up to 32 mbyte large */
|
| 61 |
|
|
|
| 62 |
|
|
always @(posedge clk)
|
| 63 |
|
|
if (~rst) mem_req_rd_en <= 1'b0;
|
| 64 |
|
|
else mem_req_rd_en <= ~mem_res_wr_almost_full;
|
| 65 |
|
|
|
| 66 |
|
|
/* timing simulation: add #2 = 2 ns hold time to mem_res_wr_en and mem_res_wr_dta */
|
| 67 |
|
|
|
| 68 |
|
|
always @(posedge clk)
|
| 69 |
|
|
if (~rst) mem_res_wr_en <= #2 1'b0;
|
| 70 |
|
|
else if (mem_req_rd_valid)
|
| 71 |
|
|
case (mem_req_rd_cmd)
|
| 72 |
|
|
CMD_NOOP: mem_res_wr_en <= #2 1'b0;
|
| 73 |
|
|
CMD_REFRESH: mem_res_wr_en <= #2 1'b0;
|
| 74 |
|
|
CMD_READ: mem_res_wr_en <= #2 1'b1;
|
| 75 |
|
|
CMD_WRITE: mem_res_wr_en <= #2 1'b0;
|
| 76 |
|
|
default mem_res_wr_en <= #2 1'b0;
|
| 77 |
|
|
endcase
|
| 78 |
|
|
else mem_res_wr_en <= #2 1'b0;
|
| 79 |
|
|
|
| 80 |
|
|
/*
|
| 81 |
|
|
* Memory read
|
| 82 |
|
|
*/
|
| 83 |
|
|
always @(posedge clk)
|
| 84 |
|
|
if (~rst) mem_res_wr_dta <= #2 63'b0;
|
| 85 |
|
|
else if (mem_req_rd_valid)
|
| 86 |
|
|
case (mem_req_rd_cmd)
|
| 87 |
|
|
CMD_NOOP: mem_res_wr_dta <= #2 63'b0;
|
| 88 |
|
|
CMD_REFRESH: mem_res_wr_dta <= #2 63'b0;
|
| 89 |
|
|
CMD_READ: mem_res_wr_dta <= #2 mem[mem_req_rd_addr];
|
| 90 |
|
|
CMD_WRITE: mem_res_wr_dta <= #2 63'b0;
|
| 91 |
|
|
default mem_res_wr_dta <= #2 63'b0;
|
| 92 |
|
|
endcase
|
| 93 |
|
|
else mem_res_wr_dta <= #2 63'b0;
|
| 94 |
|
|
|
| 95 |
|
|
/*
|
| 96 |
|
|
* Memory write
|
| 97 |
|
|
*/
|
| 98 |
|
|
always @(posedge clk)
|
| 99 |
|
|
if (mem_req_rd_valid && (mem_req_rd_cmd == CMD_WRITE)) mem[mem_req_rd_addr] <= mem_req_rd_dta;
|
| 100 |
|
|
|
| 101 |
|
|
/*
|
| 102 |
|
|
* Trap error address
|
| 103 |
|
|
*/
|
| 104 |
|
|
always @(posedge clk)
|
| 105 |
|
|
if (mem_req_rd_valid && ((mem_req_rd_cmd == CMD_WRITE) || (mem_req_rd_cmd == CMD_READ))
|
| 106 |
|
|
&& (mem_req_rd_addr == ADDR_ERR))
|
| 107 |
|
|
begin
|
| 108 |
|
|
$display("%m *** error: access to ADDR_ERR ***");
|
| 109 |
|
|
`ifdef DUMP_FRAMESTORE
|
| 110 |
|
|
write_framestore;
|
| 111 |
|
|
`endif
|
| 112 |
|
|
//$stop;
|
| 113 |
|
|
end
|
| 114 |
|
|
|
| 115 |
|
|
|
| 116 |
|
|
`ifdef DEBUG
|
| 117 |
|
|
always @(posedge clk)
|
| 118 |
|
|
if (mem_req_rd_valid)
|
| 119 |
|
|
case (mem_req_rd_cmd)
|
| 120 |
|
|
CMD_NOOP: #0 $display("%m\tCMD_NOOP ");
|
| 121 |
|
|
CMD_REFRESH: #0 $display("%m\tCMD_REFRESH ");
|
| 122 |
|
|
CMD_READ: #0 $display("%m\tCMD_READ mem[%6h] : %h", mem_req_rd_addr, mem[mem_req_rd_addr]);
|
| 123 |
|
|
CMD_WRITE: #0 $display("%m\tCMD_WRITE mem[%6h] = %h", mem_req_rd_addr, mem_req_rd_dta);
|
| 124 |
|
|
default #0 $display("%m\t*** Error: unknown command %d ***", mem_req_rd_cmd);
|
| 125 |
|
|
endcase
|
| 126 |
|
|
|
| 127 |
|
|
`endif
|
| 128 |
|
|
|
| 129 |
|
|
`ifdef MEMORY_INIT
|
| 130 |
|
|
/*
|
| 131 |
|
|
Initialize memory at powerup. Optional.
|
| 132 |
|
|
*/
|
| 133 |
|
|
|
| 134 |
|
|
integer addr;
|
| 135 |
|
|
|
| 136 |
|
|
initial
|
| 137 |
|
|
begin
|
| 138 |
|
|
for ( addr = 0; addr < END_OF_MEM; addr = addr + 1)
|
| 139 |
|
|
mem[addr] = {8{8'd128}}; // initialize memory to all zeroes in yuv; all zeroes in yuv is a dull green
|
| 140 |
|
|
end
|
| 141 |
|
|
`endif
|
| 142 |
|
|
|
| 143 |
|
|
/*
|
| 144 |
|
|
write all of memory to stdout
|
| 145 |
|
|
*/
|
| 146 |
|
|
|
| 147 |
|
|
task mem_dump;
|
| 148 |
|
|
/*
|
| 149 |
|
|
* Dump memory.
|
| 150 |
|
|
* Used in testbench.
|
| 151 |
|
|
*/
|
| 152 |
|
|
integer mem_dump;
|
| 153 |
|
|
|
| 154 |
|
|
begin
|
| 155 |
|
|
$display("%m\t\tmemory dump: begin");
|
| 156 |
|
|
for (mem_dump = 22'h0; mem_dump <= 22'h3fffff; mem_dump = mem_dump + 1)
|
| 157 |
|
|
if (mem[mem_dump] !== 64'bx)
|
| 158 |
|
|
begin
|
| 159 |
|
|
$display("%m\t\tmemory dump: %5h: %8h", mem_dump, mem[mem_dump]);
|
| 160 |
|
|
end
|
| 161 |
|
|
$display("%m\t\tmemory dump: end");
|
| 162 |
|
|
end
|
| 163 |
|
|
endtask
|
| 164 |
|
|
|
| 165 |
|
|
`ifdef DUMP_FRAMESTORE
|
| 166 |
|
|
|
| 167 |
|
|
wire [13:0]width;
|
| 168 |
|
|
wire [13:0]height;
|
| 169 |
|
|
reg [13:0]mb_width;
|
| 170 |
|
|
reg [13:0]mb_height;
|
| 171 |
|
|
wire [13:0]display_horizontal_size;
|
| 172 |
|
|
wire [13:0]display_vertical_size;
|
| 173 |
|
|
wire [1:0]picture_structure;
|
| 174 |
|
|
wire [1:0]chroma_format;
|
| 175 |
|
|
wire update_picture_buffers;
|
| 176 |
|
|
wire [12:0]macroblock_address;
|
| 177 |
|
|
|
| 178 |
|
|
assign width = testbench.mpeg2.vld.horizontal_size;
|
| 179 |
|
|
assign height = testbench.mpeg2.vld.vertical_size;
|
| 180 |
|
|
assign display_horizontal_size = testbench.mpeg2.vld.display_horizontal_size;
|
| 181 |
|
|
assign display_vertical_size = testbench.mpeg2.vld.display_vertical_size;
|
| 182 |
|
|
assign picture_structure = testbench.mpeg2.vld.picture_structure;
|
| 183 |
|
|
assign chroma_format = testbench.mpeg2.vld.chroma_format;
|
| 184 |
|
|
assign update_picture_buffers = testbench.mpeg2.update_picture_buffers;
|
| 185 |
|
|
assign macroblock_address = testbench.mpeg2.macroblock_address;
|
| 186 |
|
|
|
| 187 |
|
|
always @*
|
| 188 |
|
|
begin
|
| 189 |
|
|
mb_width <= (width + 15) >> 4;
|
| 190 |
|
|
mb_height <= (height + 15) >> 4;
|
| 191 |
|
|
end
|
| 192 |
|
|
|
| 193 |
|
|
/*
|
| 194 |
|
|
* count frames
|
| 195 |
|
|
*/
|
| 196 |
|
|
|
| 197 |
|
|
integer frame_number = 0;
|
| 198 |
|
|
|
| 199 |
|
|
always @(posedge update_picture_buffers)
|
| 200 |
|
|
frame_number <= frame_number + 1;
|
| 201 |
|
|
|
| 202 |
|
|
/*
|
| 203 |
|
|
* Create a bitmap file of the framestore. Bitmap is in Portable Pixmap format (ppm).
|
| 204 |
|
|
* This is a task used in debugging.
|
| 205 |
|
|
*/
|
| 206 |
|
|
|
| 207 |
|
|
reg [31:0]fname_cnt = "0000";
|
| 208 |
|
|
|
| 209 |
|
|
task write_framestore;
|
| 210 |
|
|
|
| 211 |
|
|
reg [32*8:1]fname;
|
| 212 |
|
|
integer fp;
|
| 213 |
|
|
integer w;
|
| 214 |
|
|
integer h;
|
| 215 |
|
|
|
| 216 |
|
|
`include "vld_codes.v"
|
| 217 |
|
|
|
| 218 |
|
|
begin
|
| 219 |
|
|
if ((^mb_width !== 1'bx) && (^mb_height !== 1'bx)) // check image size valid
|
| 220 |
|
|
begin
|
| 221 |
|
|
/* new filename */
|
| 222 |
|
|
fname = {"framestore_", fname_cnt, ".ppm"};
|
| 223 |
|
|
/* implement a counter for string "fname_cnt" */
|
| 224 |
|
|
if (fname_cnt[7:0] != "9")
|
| 225 |
|
|
fname_cnt[7:0] = fname_cnt[7:0] + 1;
|
| 226 |
|
|
else
|
| 227 |
|
|
begin
|
| 228 |
|
|
fname_cnt[7:0] = "0";
|
| 229 |
|
|
if (fname_cnt[15:8] != "9")
|
| 230 |
|
|
fname_cnt[15:8] = fname_cnt[15:8] + 1;
|
| 231 |
|
|
else
|
| 232 |
|
|
begin
|
| 233 |
|
|
fname_cnt[15:8] = "0";
|
| 234 |
|
|
if (fname_cnt[23:16] != "9")
|
| 235 |
|
|
fname_cnt[23:16] = fname_cnt[23:16] + 1;
|
| 236 |
|
|
else
|
| 237 |
|
|
begin
|
| 238 |
|
|
fname_cnt[23:16] = "0";
|
| 239 |
|
|
if (fname_cnt[31:24] != "9")
|
| 240 |
|
|
fname_cnt[31:24] = fname_cnt[31:24] + 1;
|
| 241 |
|
|
else
|
| 242 |
|
|
fname_cnt[31:24] = "0";
|
| 243 |
|
|
end
|
| 244 |
|
|
end
|
| 245 |
|
|
end
|
| 246 |
|
|
// open new file
|
| 247 |
|
|
fp=$fopen(fname, "w");
|
| 248 |
|
|
if (fp == 0)
|
| 249 |
|
|
begin
|
| 250 |
|
|
$display ("%m\t*** error opening file ***");
|
| 251 |
|
|
$finish;
|
| 252 |
|
|
end
|
| 253 |
|
|
$fwrite(fp, "P3\n"); // Portable pixmap, ascii.
|
| 254 |
|
|
$timeformat(-3, 2, " ms", 8);
|
| 255 |
|
|
$fwrite(fp, "# mpeg2 framestore dump @ %t\n", $time);
|
| 256 |
|
|
$display("%m\tdumping framestore to %s @ %t", fname, $time);
|
| 257 |
|
|
$timeformat(-9, 2, " ns", 20);
|
| 258 |
|
|
$fwrite(fp, "# frame number %d\n", frame_number);
|
| 259 |
|
|
$fwrite(fp, "# horizontal_size %d\n", width);
|
| 260 |
|
|
$fwrite(fp, "# vertical_size %d\n", height);
|
| 261 |
|
|
$fwrite(fp, "# display_horizontal_size %d\n", display_horizontal_size);
|
| 262 |
|
|
$fwrite(fp, "# display_vertical_size %d\n", display_vertical_size);
|
| 263 |
|
|
$fwrite(fp, "# mb_width %d\n", mb_width);
|
| 264 |
|
|
$fwrite(fp, "# mb_height %d\n", mb_height);
|
| 265 |
|
|
if (picture_structure==FRAME_PICTURE)
|
| 266 |
|
|
$fwrite(fp, "# picture_structure frame picture\n");
|
| 267 |
|
|
else
|
| 268 |
|
|
$fwrite(fp, "# picture_structure field picture\n");
|
| 269 |
|
|
|
| 270 |
|
|
if (chroma_format == CHROMA420)
|
| 271 |
|
|
$fwrite(fp, "# chroma_format 4:2:0\n");
|
| 272 |
|
|
else
|
| 273 |
|
|
$fwrite(fp, "# chroma_format %d\n", chroma_format);
|
| 274 |
|
|
|
| 275 |
|
|
$fwrite(fp, "%d %d 255\n", width, height * 9 + 26);
|
| 276 |
|
|
|
| 277 |
|
|
write_mb (fp, 4, FRAME_0_Y, mb_width, mb_height);
|
| 278 |
|
|
write_mb (fp, 1, FRAME_0_CR, mb_width, mb_height);
|
| 279 |
|
|
write_mb (fp, 1, FRAME_0_CB, mb_width, mb_height);
|
| 280 |
|
|
|
| 281 |
|
|
write_mb (fp, 4, FRAME_1_Y, mb_width, mb_height);
|
| 282 |
|
|
write_mb (fp, 1, FRAME_1_CR, mb_width, mb_height);
|
| 283 |
|
|
write_mb (fp, 1, FRAME_1_CB, mb_width, mb_height);
|
| 284 |
|
|
|
| 285 |
|
|
write_mb (fp, 4, FRAME_2_Y, mb_width, mb_height);
|
| 286 |
|
|
write_mb (fp, 1, FRAME_2_CR, mb_width, mb_height);
|
| 287 |
|
|
write_mb (fp, 1, FRAME_2_CB, mb_width, mb_height);
|
| 288 |
|
|
|
| 289 |
|
|
write_mb (fp, 4, FRAME_3_Y, mb_width, mb_height);
|
| 290 |
|
|
write_mb (fp, 1, FRAME_3_CR, mb_width, mb_height);
|
| 291 |
|
|
write_mb (fp, 1, FRAME_3_CB, mb_width, mb_height);
|
| 292 |
|
|
|
| 293 |
|
|
write_mb (fp, 4, OSD, mb_width, mb_height);
|
| 294 |
|
|
$fwrite(fp, "# not truncated\n");
|
| 295 |
|
|
$fclose(fp);
|
| 296 |
|
|
end
|
| 297 |
|
|
end
|
| 298 |
|
|
endtask
|
| 299 |
|
|
|
| 300 |
|
|
task write_mb;
|
| 301 |
|
|
|
| 302 |
|
|
input [31:0]fp; // file pointer to write to
|
| 303 |
|
|
input [2:0]blocks; // blocks per macroblock
|
| 304 |
|
|
input [21:0]base_address; // base address of lumi/chromi region in memory
|
| 305 |
|
|
input [15:0]mb_width; // width in macroblocks
|
| 306 |
|
|
input [15:0]mb_height; // height in macroblocks
|
| 307 |
|
|
|
| 308 |
|
|
reg [63:0]row;
|
| 309 |
|
|
|
| 310 |
|
|
reg [7:0]pixel_0;
|
| 311 |
|
|
reg [7:0]pixel_1;
|
| 312 |
|
|
reg [7:0]pixel_2;
|
| 313 |
|
|
reg [7:0]pixel_3;
|
| 314 |
|
|
reg [7:0]pixel_4;
|
| 315 |
|
|
reg [7:0]pixel_5;
|
| 316 |
|
|
reg [7:0]pixel_6;
|
| 317 |
|
|
reg [7:0]pixel_7;
|
| 318 |
|
|
|
| 319 |
|
|
integer fp;
|
| 320 |
|
|
integer h;
|
| 321 |
|
|
integer f;
|
| 322 |
|
|
integer r;
|
| 323 |
|
|
integer s;
|
| 324 |
|
|
integer w;
|
| 325 |
|
|
reg [21:0]addr;
|
| 326 |
|
|
|
| 327 |
|
|
begin
|
| 328 |
|
|
/* white separator line */
|
| 329 |
|
|
for (w = 0; w < 2 * mb_width; w = w + 1)
|
| 330 |
|
|
begin
|
| 331 |
|
|
for (s = 0; s < 24; s = s + 1)
|
| 332 |
|
|
$fwrite(fp, " 255");
|
| 333 |
|
|
$fwrite(fp, "\n");
|
| 334 |
|
|
end
|
| 335 |
|
|
/* this code needs to be kept synchronized to memory_address */
|
| 336 |
|
|
addr = base_address;
|
| 337 |
|
|
case (blocks)
|
| 338 |
|
|
4:
|
| 339 |
|
|
for (h = 0; h < 16 * mb_height; h = h + 1)
|
| 340 |
|
|
begin
|
| 341 |
|
|
for (w = 0; w < 2 * mb_width; w = w + 1)
|
| 342 |
|
|
begin
|
| 343 |
|
|
write_row (fp, addr); /* block 0 */
|
| 344 |
|
|
addr = addr + 1;
|
| 345 |
|
|
end
|
| 346 |
|
|
end
|
| 347 |
|
|
1:
|
| 348 |
|
|
for (h = 0; h < 8 * mb_height; h = h + 1)
|
| 349 |
|
|
begin
|
| 350 |
|
|
for (w = 0; w < mb_width; w = w + 1)
|
| 351 |
|
|
begin
|
| 352 |
|
|
write_row (fp, addr); /* block 0 */
|
| 353 |
|
|
addr = addr + 1;
|
| 354 |
|
|
end
|
| 355 |
|
|
for (w = 0; w < mb_width; w = w + 1)
|
| 356 |
|
|
begin
|
| 357 |
|
|
for (s = 0; s < 24; s = s + 1)
|
| 358 |
|
|
$fwrite(fp, " 255");
|
| 359 |
|
|
$fwrite(fp, "\n");
|
| 360 |
|
|
end
|
| 361 |
|
|
end
|
| 362 |
|
|
default
|
| 363 |
|
|
begin
|
| 364 |
|
|
$display("%m\tchroma format not implemented\n");
|
| 365 |
|
|
end
|
| 366 |
|
|
endcase
|
| 367 |
|
|
/* white separator line */
|
| 368 |
|
|
for (w = 0; w < 2 * mb_width; w = w + 1)
|
| 369 |
|
|
begin
|
| 370 |
|
|
for (s = 0; s < 24; s = s + 1)
|
| 371 |
|
|
$fwrite(fp, " 255");
|
| 372 |
|
|
$fwrite(fp, "\n");
|
| 373 |
|
|
end
|
| 374 |
|
|
end
|
| 375 |
|
|
endtask
|
| 376 |
|
|
|
| 377 |
|
|
task write_row;
|
| 378 |
|
|
|
| 379 |
|
|
input [31:0]fp; // file pointer to write to
|
| 380 |
|
|
input [21:0]address; // address of block row
|
| 381 |
|
|
|
| 382 |
|
|
reg [63:0]dta;
|
| 383 |
|
|
|
| 384 |
|
|
integer fp;
|
| 385 |
|
|
|
| 386 |
|
|
reg signed [7:0]pixel_0;
|
| 387 |
|
|
reg signed [7:0]pixel_1;
|
| 388 |
|
|
reg signed [7:0]pixel_2;
|
| 389 |
|
|
reg signed [7:0]pixel_3;
|
| 390 |
|
|
reg signed [7:0]pixel_4;
|
| 391 |
|
|
reg signed [7:0]pixel_5;
|
| 392 |
|
|
reg signed [7:0]pixel_6;
|
| 393 |
|
|
reg signed [7:0]pixel_7;
|
| 394 |
|
|
|
| 395 |
|
|
reg signed [8:0]pixval_0;
|
| 396 |
|
|
reg signed [8:0]pixval_1;
|
| 397 |
|
|
reg signed [8:0]pixval_2;
|
| 398 |
|
|
reg signed [8:0]pixval_3;
|
| 399 |
|
|
reg signed [8:0]pixval_4;
|
| 400 |
|
|
reg signed [8:0]pixval_5;
|
| 401 |
|
|
reg signed [8:0]pixval_6;
|
| 402 |
|
|
reg signed [8:0]pixval_7;
|
| 403 |
|
|
|
| 404 |
|
|
|
| 405 |
|
|
begin
|
| 406 |
|
|
dta = mem[address];
|
| 407 |
|
|
|
| 408 |
|
|
{pixel_0, pixel_1, pixel_2, pixel_3, pixel_4, pixel_5, pixel_6, pixel_7} = dta;
|
| 409 |
|
|
|
| 410 |
|
|
pixval_0 = {pixel_0[7], pixel_0};
|
| 411 |
|
|
pixval_1 = {pixel_1[7], pixel_1};
|
| 412 |
|
|
pixval_2 = {pixel_2[7], pixel_2};
|
| 413 |
|
|
pixval_3 = {pixel_3[7], pixel_3};
|
| 414 |
|
|
pixval_4 = {pixel_4[7], pixel_4};
|
| 415 |
|
|
pixval_5 = {pixel_5[7], pixel_5};
|
| 416 |
|
|
pixval_6 = {pixel_6[7], pixel_6};
|
| 417 |
|
|
pixval_7 = {pixel_7[7], pixel_7};
|
| 418 |
|
|
|
| 419 |
|
|
pixval_0 = pixval_0 + 9'sd128;
|
| 420 |
|
|
pixval_1 = pixval_1 + 9'sd128;
|
| 421 |
|
|
pixval_2 = pixval_2 + 9'sd128;
|
| 422 |
|
|
pixval_3 = pixval_3 + 9'sd128;
|
| 423 |
|
|
pixval_4 = pixval_4 + 9'sd128;
|
| 424 |
|
|
pixval_5 = pixval_5 + 9'sd128;
|
| 425 |
|
|
pixval_6 = pixval_6 + 9'sd128;
|
| 426 |
|
|
pixval_7 = pixval_7 + 9'sd128;
|
| 427 |
|
|
|
| 428 |
|
|
/* check for undefined pixels, replace with green to draw attention */
|
| 429 |
|
|
if (^pixval_0 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_0, pixval_0, pixval_0);
|
| 430 |
|
|
if (^pixval_1 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_1, pixval_1, pixval_1);
|
| 431 |
|
|
if (^pixval_2 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_2, pixval_2, pixval_2);
|
| 432 |
|
|
if (^pixval_3 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_3, pixval_3, pixval_3);
|
| 433 |
|
|
if (^pixval_4 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_4, pixval_4, pixval_4);
|
| 434 |
|
|
if (^pixval_5 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_5, pixval_5, pixval_5);
|
| 435 |
|
|
if (^pixval_6 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_6, pixval_6, pixval_6);
|
| 436 |
|
|
if (^pixval_7 === 1'bx) $fwrite(fp, " 0 127 0 "); else $fwrite(fp, "%4d %4d %4d ", pixval_7, pixval_7, pixval_7);
|
| 437 |
|
|
// $fwrite(fp, "# mem[%6h]: %8h", address, dta); /* Some ppm picture viewers do not accept comment in mid-image */
|
| 438 |
|
|
$fwrite(fp, "\n");
|
| 439 |
|
|
|
| 440 |
|
|
end
|
| 441 |
|
|
endtask
|
| 442 |
|
|
|
| 443 |
|
|
`ifndef DUMP_FRAMESTORE_OFTEN
|
| 444 |
|
|
/* trigger framestore dump when updating picture buffers */
|
| 445 |
|
|
|
| 446 |
|
|
/*
|
| 447 |
|
|
always @(posedge update_picture_buffers)
|
| 448 |
|
|
write_framestore;
|
| 449 |
|
|
*/
|
| 450 |
|
|
|
| 451 |
|
|
always @(posedge clk)
|
| 452 |
|
|
if (mem_req_rd_valid && (mem_req_rd_cmd == CMD_WRITE)
|
| 453 |
|
|
&& ((mem_req_rd_addr == FRAME_0_Y) || (mem_req_rd_addr == FRAME_1_Y) || (mem_req_rd_addr == FRAME_2_Y) || (mem_req_rd_addr == FRAME_3_Y)))
|
| 454 |
|
|
write_framestore;
|
| 455 |
|
|
`endif
|
| 456 |
|
|
|
| 457 |
|
|
`ifdef DUMP_FRAMESTORE_OFTEN
|
| 458 |
|
|
/* trigger framestore dump every 200 macroblocks */
|
| 459 |
|
|
always @(macroblock_address)
|
| 460 |
|
|
if ((^macroblock_address !== 1'bx) && (macroblock_address % 200) == 0) write_framestore;
|
| 461 |
|
|
`endif
|
| 462 |
|
|
|
| 463 |
|
|
always @(macroblock_address)
|
| 464 |
|
|
if (^macroblock_address !== 1'bx)
|
| 465 |
|
|
$strobe("%m\tmacroblock_address: %d", macroblock_address);
|
| 466 |
|
|
|
| 467 |
|
|
`endif
|
| 468 |
|
|
|
| 469 |
|
|
endmodule
|
| 470 |
|
|
/* not truncated */
|
