| Line 66... |
Line 66... |
rst_i, clk_i,
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rst_i, clk_i,
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cyc_i, stb_i, ack_o, we_i, adr_i, dat_i, dat_o,
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cyc_i, stb_i, ack_o, we_i, adr_i, dat_i, dat_o,
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lp, curpos,
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lp, curpos,
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vclk, hsync, vsync, blank, border, rgbIn, rgbOut
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vclk, hsync, vsync, blank, border, rgbIn, rgbOut
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);
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);
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parameter COLS = 12'd56;
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parameter num = 4'd1;
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parameter COLS = 12'd84;
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parameter ROWS = 12'd31;
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parameter ROWS = 12'd31;
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parameter pTextAddress = 32'hFFD00000;
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parameter pTextAddress = 32'hFFD00000;
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parameter pBitmapAddress = 32'hFFD20000;
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parameter pBitmapAddress = 32'hFFD20000;
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parameter pRegAddress = 32'hFFDA0000;
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parameter pRegAddress = 32'hFFDA0000;
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| Line 161... |
Line 162... |
// Address Decoding
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// Address Decoding
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// I/O range Dx
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// I/O range Dx
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//--------------------------------------------------------------------
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//--------------------------------------------------------------------
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wire cs_text = cyc_i && stb_i && (adr_i[31:16]==pTextAddress[31:16]);
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wire cs_text = cyc_i && stb_i && (adr_i[31:16]==pTextAddress[31:16]);
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wire cs_rom = cyc_i && stb_i && (adr_i[31:16]==pBitmapAddress[31:16]);
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wire cs_rom = cyc_i && stb_i && (adr_i[31:16]==pBitmapAddress[31:16]);
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wire cs_reg = cyc_i && stb_i && (adr_i[31: 8]==pRegAddress[31:8]);
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wire cs_reg = cyc_i && stb_i && (adr_i[31: 6]==pRegAddress[31:6]);
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wire cs_any = cs_text|cs_rom|cs_reg;
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wire cs_any = cs_text|cs_rom|cs_reg;
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assign tdat_o[9] = 1'b0;
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// Register outputs
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// Register outputs
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always @(posedge clk_i)
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always @(posedge clk_i)
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if (cs_text) dat_o <= {4'd0,tdat_o};
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if (cs_text) dat_o <= {4'd0,tdat_o};
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else if (cs_rom) dat_o <= {23'd0,chdat_o};
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else if (cs_rom) dat_o <= {23'd0,chdat_o};
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| Line 367... |
Line 369... |
windowLeft <= 12'd90;
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windowLeft <= 12'd90;
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pixelWidth <= 4'd1; // 681 pixels
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pixelWidth <= 4'd1; // 681 pixels
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pixelHeight <= 4'd1; // 384 pixels
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pixelHeight <= 4'd1; // 384 pixels
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*/
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*/
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// 56x31
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// 56x31
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windowTop <= 12'd16;
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if (num==4'd1) begin
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windowLeft <= 12'd56;
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windowTop <= 12'd16;//12'd16;
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pixelWidth <= 4'd2; // 455 pixels
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windowLeft <= 12'h66;//12'd86;
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pixelWidth <= 4'd1; // 680 pixels
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pixelHeight <= 4'd2; // 256 pixels
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pixelHeight <= 4'd2; // 256 pixels
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numCols <= COLS;
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numCols <= COLS;
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numRows <= ROWS;
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numRows <= ROWS;
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maxScanline <= 5'd7;
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maxScanline <= 5'd7;
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maxScanpix <= 5'd7;
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maxScanpix <= 5'd7;
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| Line 384... |
Line 387... |
cursorPos <= 16'h0003;
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cursorPos <= 16'h0003;
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cursorType <= 2'b00;
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cursorType <= 2'b00;
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txtTcCode <= 9'h1ff;
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txtTcCode <= 9'h1ff;
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charOutDelay <= 12'd2;
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charOutDelay <= 12'd2;
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end
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end
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else if (num==4'd2) begin
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windowTop <= 12'd64;//12'd16;
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windowLeft <= 12'h376;//12'd86;
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pixelWidth <= 4'd0; // 680 pixels
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pixelHeight <= 4'd1; // 256 pixels
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numCols <= 40;
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numRows <= 25;
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maxScanline <= 5'd7;
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maxScanpix <= 5'd7;
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rBlink <= 3'b111; // 01 = non display
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startAddress <= 16'h0000;
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cursorStart <= 5'd00;
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cursorEnd <= 5'd31;
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cursorPos <= 16'h0003;
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cursorType <= 2'b00;
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txtTcCode <= 9'h1ff;
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charOutDelay <= 12'd2;
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end
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end
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else begin
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else begin
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if (cs_reg & we_i) begin // register write ?
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if (cs_reg & we_i) begin // register write ?
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$display("TC Write: r%d=%h", adr_i[5:2], dat_i);
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case(adr_i[5:2])
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case(adr_i[5:2])
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4'd00: begin
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4'd00: begin
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numCols <= dat_i[15:0]; // horizontal displayed
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numCols <= dat_i[15:0]; // horizontal displayed
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charOutDelay <= dat_i[31:16];
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charOutDelay <= dat_i[31:16];
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end
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end
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| Line 401... |
Line 423... |
4'd04: maxScanline <= dat_i[4:0];
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4'd04: maxScanline <= dat_i[4:0];
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4'd05: begin
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4'd05: begin
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pixelHeight <= dat_i[7:4];
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pixelHeight <= dat_i[7:4];
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pixelWidth <= dat_i[3:0]; // horizontal pixel width
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pixelWidth <= dat_i[3:0]; // horizontal pixel width
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end
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end
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4'd07: txtTcCode <= dat_i[4:0];
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4'd07: txtTcCode <= dat_i[8:0];
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4'd08: begin
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4'd08: begin
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cursorStart <= dat_i[4:0]; // scan line sursor starts on
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cursorStart <= dat_i[4:0]; // scan line sursor starts on
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rBlink <= dat_i[7:5];
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rBlink <= dat_i[7:5];
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cursorType <= dat_i[9:8];
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cursorType <= dat_i[9:8];
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end
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end
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4'd09: cursorEnd <= dat_i[4:0]; // scan line cursor ends on
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4'd09: cursorEnd <= dat_i[4:0]; // scan line cursor ends on
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4'd10: startAddress <= dat_i;
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4'd10: startAddress <= dat_i;
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4'd11: cursorPos <= dat_i;
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4'd11: cursorPos <= dat_i[15:0];
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default: ;
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endcase
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endcase
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end
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end
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end
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end
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