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[/] [eco32/] [tags/] [eco32-0.23/] [fpga/] [src/] [dsp/] [dspmem.v] - Rev 199
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// // dspmem.v -- display memory // module dspmem(rdwr_row, rdwr_col, wr_data, rd_data, en, wr, clk, pixclk, txtrow, txtcol, attcode, chrcode, chrrow_in, chrcol_in, blank_in, hsync_in, vsync_in, blink_in, chrrow_out, chrcol_out, blank_out, hsync_out, vsync_out, blink_out); input [4:0] rdwr_row; input [6:0] rdwr_col; input [15:0] wr_data; output [15:0] rd_data; input en; input wr; input clk; input pixclk; input [4:0] txtrow; input [6:0] txtcol; output [7:0] attcode; output [7:0] chrcode; input [3:0] chrrow_in; input [2:0] chrcol_in; input blank_in; input hsync_in; input vsync_in; input blink_in; output reg [3:0] chrrow_out; output reg [2:0] chrcol_out; output reg blank_out; output reg hsync_out; output reg vsync_out; output reg blink_out; wire [11:0] rdwr_addr; wire [3:0] rdwr_din_n3; wire [3:0] rdwr_din_n2; wire [3:0] rdwr_din_n1; wire [3:0] rdwr_din_n0; wire [3:0] rdwr_dout_n3; wire [3:0] rdwr_dout_n2; wire [3:0] rdwr_dout_n1; wire [3:0] rdwr_dout_n0; wire [11:0] rfsh_addr; wire [3:0] rfsh_din_n3; wire [3:0] rfsh_din_n2; wire [3:0] rfsh_din_n1; wire [3:0] rfsh_din_n0; wire [3:0] rfsh_dout_n3; wire [3:0] rfsh_dout_n2; wire [3:0] rfsh_dout_n1; wire [3:0] rfsh_dout_n0; assign rdwr_addr[11:7] = rdwr_row[4:0]; assign rdwr_addr[6:0] = rdwr_col[6:0]; assign rdwr_din_n3 = wr_data[15:12]; assign rdwr_din_n2 = wr_data[11: 8]; assign rdwr_din_n1 = wr_data[ 7: 4]; assign rdwr_din_n0 = wr_data[ 3: 0]; assign rd_data[15:12] = rdwr_dout_n3; assign rd_data[11: 8] = rdwr_dout_n2; assign rd_data[ 7: 4] = rdwr_dout_n1; assign rd_data[ 3: 0] = rdwr_dout_n0; assign rfsh_addr[11:7] = txtrow[4:0]; assign rfsh_addr[6:0] = txtcol[6:0]; assign rfsh_din_n3 = 4'b0000; assign rfsh_din_n2 = 4'b0000; assign rfsh_din_n1 = 4'b0000; assign rfsh_din_n0 = 4'b0000; assign attcode[7:4] = rfsh_dout_n3; assign attcode[3:0] = rfsh_dout_n2; assign chrcode[7:4] = rfsh_dout_n1; assign chrcode[3:0] = rfsh_dout_n0; // RAMB16_S4_S4: Spartan-3 4k x 4 Dual-Port RAM RAMB16_S4_S4 display_att_hi ( .DOA(rdwr_dout_n3), // Port A 4-bit Data Output .DOB(rfsh_dout_n3), // Port B 4-bit Data Output .ADDRA(rdwr_addr), // Port A 12-bit Address Input .ADDRB(rfsh_addr), // Port B 12-bit Address Input .CLKA(clk), // Port A Clock .CLKB(clk), // Port B Clock .DIA(rdwr_din_n3), // Port A 4-bit Data Input .DIB(rfsh_din_n3), // Port B 4-bit Data Input .ENA(en), // Port A RAM Enable Input .ENB(pixclk), // Port B RAM Enable Input .SSRA(1'b0), // Port A Synchronous Set/Reset Input .SSRB(1'b0), // Port B Synchronous Set/Reset Input .WEA(wr), // Port A Write Enable Input .WEB(1'b0) // Port B Write Enable Input ); `include "dspatthi.init" // RAMB16_S4_S4: Spartan-3 4k x 4 Dual-Port RAM RAMB16_S4_S4 display_att_lo ( .DOA(rdwr_dout_n2), // Port A 4-bit Data Output .DOB(rfsh_dout_n2), // Port B 4-bit Data Output .ADDRA(rdwr_addr), // Port A 12-bit Address Input .ADDRB(rfsh_addr), // Port B 12-bit Address Input .CLKA(clk), // Port A Clock .CLKB(clk), // Port B Clock .DIA(rdwr_din_n2), // Port A 4-bit Data Input .DIB(rfsh_din_n2), // Port B 4-bit Data Input .ENA(en), // Port A RAM Enable Input .ENB(pixclk), // Port B RAM Enable Input .SSRA(1'b0), // Port A Synchronous Set/Reset Input .SSRB(1'b0), // Port B Synchronous Set/Reset Input .WEA(wr), // Port A Write Enable Input .WEB(1'b0) // Port B Write Enable Input ); `include "dspattlo.init" // RAMB16_S4_S4: Spartan-3 4k x 4 Dual-Port RAM RAMB16_S4_S4 display_chr_hi ( .DOA(rdwr_dout_n1), // Port A 4-bit Data Output .DOB(rfsh_dout_n1), // Port B 4-bit Data Output .ADDRA(rdwr_addr), // Port A 12-bit Address Input .ADDRB(rfsh_addr), // Port B 12-bit Address Input .CLKA(clk), // Port A Clock .CLKB(clk), // Port B Clock .DIA(rdwr_din_n1), // Port A 4-bit Data Input .DIB(rfsh_din_n1), // Port B 4-bit Data Input .ENA(en), // Port A RAM Enable Input .ENB(pixclk), // Port B RAM Enable Input .SSRA(1'b0), // Port A Synchronous Set/Reset Input .SSRB(1'b0), // Port B Synchronous Set/Reset Input .WEA(wr), // Port A Write Enable Input .WEB(1'b0) // Port B Write Enable Input ); `include "dspchrhi.init" // RAMB16_S4_S4: Spartan-3 4k x 4 Dual-Port RAM RAMB16_S4_S4 display_chr_lo ( .DOA(rdwr_dout_n0), // Port A 4-bit Data Output .DOB(rfsh_dout_n0), // Port B 4-bit Data Output .ADDRA(rdwr_addr), // Port A 12-bit Address Input .ADDRB(rfsh_addr), // Port B 12-bit Address Input .CLKA(clk), // Port A Clock .CLKB(clk), // Port B Clock .DIA(rdwr_din_n0), // Port A 4-bit Data Input .DIB(rfsh_din_n0), // Port B 4-bit Data Input .ENA(en), // Port A RAM Enable Input .ENB(pixclk), // Port B RAM Enable Input .SSRA(1'b0), // Port A Synchronous Set/Reset Input .SSRB(1'b0), // Port B Synchronous Set/Reset Input .WEA(wr), // Port A Write Enable Input .WEB(1'b0) // Port B Write Enable Input ); `include "dspchrlo.init" always @(posedge clk) begin if (pixclk == 1) begin chrrow_out <= chrrow_in; chrcol_out <= chrcol_in; blank_out <= blank_in; hsync_out <= hsync_in; vsync_out <= vsync_in; blink_out <= blink_in; end end endmodule
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