Create quartus project

This commit is contained in:
Byron Lathi
2022-03-05 17:52:42 -06:00
parent b996d93c99
commit aca17a9cf8
10 changed files with 3761 additions and 1 deletions

52
hw/fpga/super6502.sv Normal file
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module super6502(
input clk,
input logic rst,
input logic [15:0] cpu_addr,
inout logic [7:0] cpu_data,
input logic cpu_vpb,
input logic cpu_mlb,
input logic cpu_rwb,
input logic cpu_sync,
output logic cpu_led,
output logic cpu_resb,
output logic cpu_rdy,
output logic cpu_sob,
output logic cpu_irqb,
output logic cpu_phi2,
output logic cpu_be,
output logic cpu_nmib
);
logic [7:0] cpu_data_in;
assign cpu_data_in = cpu_data;
logic [7:0] cpu_data_out;
assign cpu_data = cpu_rwb ? cpu_data_out : 'z;
logic [2:0] clk_count;
always_ff @(posedge clk) begin
clk_count <= clk_count + 3'b1;
if (clk_count == 3'h4) begin
clk_count <= '0;
cpu_phi2 <= ~cpu_phi2;
end
end
ram main_memory(
.address(cpu_addr[14:0]),
.clock(clk),
.data(cpu_data_in),
.wren(~cpu_rwb),
.q(cpu_data_out)
);
endmodule