Apple-1-HW
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verilog-apple-one
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Merge pull request #26 from ironsteel/master 

Fix clear screen button for olimex board
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Alan Garfield 2018-05-06 07:42:27 +10:00 committed by GitHub
parent 3cf18de61f 33a2155484
commit 33199cbe55
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1 changed files with 26 additions and 10 deletions
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36
rtl/boards/olimex_ice40hx8k/apple1_hx8k.v
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@ -47,7 +47,6 @@ module apple1_top #(
output [2:0] vga_g, // green VGA signal
output [2:0] vga_b, // blue VGA signal
// Debugging ports
input [1:0] button // 2 buttons on board
);
@ -59,12 +58,28 @@ module apple1_top #(
.clock_out(clk25),
);
wire vga_bit;
wire vga_red, vga_green, vga_blue;
assign vga_r[2:0] = {vga_red, vga_red, vga_red};
assign vga_g[2:0] = {vga_green, vga_green, vga_green};
assign vga_b[2:0] = {vga_blue, vga_blue, vga_blue};
// set the monochrome base colour here..
assign vga_r[2:0] = vga_bit ? 3'b100 : 3'b000;
assign vga_g[2:0] = vga_bit ? 3'b111 : 3'b000;
assign vga_b[2:0] = vga_bit ? 3'b100 : 3'b000;
// debounce reset button
wire reset_n;
debounce reset_button (
.clk25(clk25),
.rst(1'b0),
.sig_in(button[0]),
.sig_out(reset_n)
);
// debounce clear screen button
wire clr_screen_n;
debounce clr_button (
.clk25(clk25),
.rst(~reset_n),
.sig_in(button[1]),
.sig_out(clr_screen_n)
);
// apple one main system
apple1 #(
@ -75,7 +90,7 @@ module apple1_top #(
.WOZMON_ROM_FILENAME (WOZMON_ROM_FILENAME)
) my_apple1(
.clk25(clk25),
.rst_n(button[0]),
.rst_n(reset_n),
.uart_rx(uart_rx),
.uart_tx(uart_tx),
@ -88,8 +103,9 @@ module apple1_top #(
.vga_h_sync(vga_h_sync),
.vga_v_sync(vga_v_sync),
.vga_red(vga_bit),
//.vga_grn(vga_bit),
//.vga_blu(vga_bit),
.vga_red(vga_red),
.vga_grn(vga_green),
.vga_blu(vga_blue),
.vga_cls(~clr_screen_n),
);
endmodule