Apple-1-HW/Apple1_MiST
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remove custom display colors

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This commit is contained in:
nino-porcino 2022-01-02 10:42:07 +01:00
parent fd11d59b26
commit d6dabc882d
2 changed files with 12 additions and 11 deletions
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4
rtl/apple1.v
View File

@ -125,7 +125,7 @@ assign ram_wr = we & ram_cs;
);
display display(
.clk14(clk14),
.clk(clk14),
.enable(display_cs & cpu_clken),
.rst(rst),
@ -139,8 +139,6 @@ assign ram_wr = we & ram_cs;
.w_en(we & display_cs),
.din(cpu_dout),
.mode(2'b0),
.fg_colour(3'd7),
.bg_colour(3'd0),
.clr_screen(vga_cls)
);

19
rtl/display.v
View File

@ -1,19 +1,22 @@
module display (
input clk, // 14 MHz clock signal
input rst, // active high reset signal
input enable, // clock enable strobe,
input rst, // active high reset signal
input clr_screen, // clear screen button
// video output
output vga_h_sync, // horizontal VGA sync pulse
output vga_v_sync, // vertical VGA sync pulse
output vga_red, // red VGA signal
output vga_grn, // green VGA signal
output vga_blu, // blue VGA signal
// cpu interface
input address, // address bus
input w_en, // active high write enable strobe
input [7:0] din, // 8-bit data bus (input)
input [1:0] mode, // 2-bit mode setting for pixel doubling
input [2:0] fg_colour, // 3 bit background colour
input [2:0] bg_colour, // 3 bit foreground colour
input clr_screen // clear screen button
input [1:0] mode // 2-bit mode setting for pixel doubling
);
//////////////////////////////////////////////////////////////////////////
@ -183,9 +186,9 @@ module display (
assign font_line = v_dot * 2 + 4;
// vga signals out to monitor
assign vga_red = (h_active & v_active) ? (font_out ? fg_colour[2] : bg_colour[2]) : 1'b0;
assign vga_grn = (h_active & v_active) ? (font_out ? fg_colour[1] : bg_colour[1]) : 1'b0;
assign vga_blu = (h_active & v_active) ? (font_out ? fg_colour[0] : bg_colour[0]) : 1'b0;
assign vga_red = (h_active & v_active) ? font_out : 1'b0;
assign vga_grn = (h_active & v_active) ? font_out : 1'b0;
assign vga_blu = (h_active & v_active) ? font_out : 1'b0;
assign vga_h_sync = (h_cnt < h_pulse) ? 0 : 1;
assign vga_v_sync = (v_cnt < v_pulse) ? 0 : 1;