mirror of
https://github.com/alangarf/apple-one.git
synced 2024-07-25 19:29:04 +00:00
2226afe669
This allows file names to be overridden at compile-time. It also gets rid of the ifdef SIM in the verilog components
93 lines
2.9 KiB
Verilog
93 lines
2.9 KiB
Verilog
// Licensed to the Apache Software Foundation (ASF) under one
|
|
// or more contributor license agreements. See the NOTICE file
|
|
// distributed with this work for additional information
|
|
// regarding copyright ownership. The ASF licenses this file
|
|
// to you under the Apache License, Version 2.0 (the
|
|
// "License"); you may not use this file except in compliance
|
|
// with the License. You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing,
|
|
// software distributed under the License is distributed on an
|
|
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the License for the
|
|
// specific language governing permissions and limitations
|
|
// under the License.
|
|
//
|
|
// Description: Apple 1 implementation for the iCE40HX8K dev
|
|
// board.
|
|
//
|
|
// Author.....: Alan Garfield
|
|
// Date.......: 26-1-2018
|
|
//
|
|
|
|
module apple1_top #(
|
|
parameter BASIC_FILENAME = "../../../roms/basic.hex",
|
|
parameter FONT_ROM_FILENAME = "../../../roms/vga_font_bitreversed.hex",
|
|
parameter RAM_FILENAME = "../../../roms/ram.hex",
|
|
parameter VRAM_FILENAME = "../../../roms/vga_vram.bin",
|
|
parameter WOZMON_ROM_FILENAME = "../../../roms/wozmon.hex"
|
|
) (
|
|
// I/O interface to computer
|
|
input uart_rx, // asynchronous serial data input from computer
|
|
output uart_tx, // asynchronous serial data output to computer
|
|
output uart_cts, // clear to send flag to computer
|
|
|
|
// Outputs to VGA display
|
|
output vga_h_sync, // hozizontal VGA sync pulse
|
|
output vga_v_sync, // vertical VGA sync pulse
|
|
output reg vga_red, // red VGA signal
|
|
output reg vga_grn, // green VGA signal
|
|
output reg vga_blu, // blue VGA signal
|
|
|
|
// Tricolor LED on the UPDuino
|
|
output red_led,
|
|
output green_led,
|
|
output blue_led
|
|
);
|
|
|
|
wire [15:0] leds;
|
|
assign red_led = ~leds[9];
|
|
assign green_led = ~leds[8];
|
|
assign blue_led = ~leds[7];
|
|
|
|
wire clk25;
|
|
wire clk;
|
|
|
|
SB_HFOSC inthosc (
|
|
.CLKHFPU(1'b1),
|
|
.CLKHFEN(1'b1),
|
|
.CLKHF(clk)
|
|
);
|
|
|
|
pll pll(
|
|
.clock_in(clk),
|
|
.clock_out(clk25),
|
|
);
|
|
|
|
// apple one main system
|
|
apple1 #(
|
|
.BASIC_FILENAME (BASIC_FILENAME),
|
|
.FONT_ROM_FILENAME (FONT_ROM_FILENAME),
|
|
.RAM_FILENAME (RAM_FILENAME),
|
|
.VRAM_FILENAME (VRAM_FILENAME),
|
|
.WOZMON_ROM_FILENAME (WOZMON_ROM_FILENAME)
|
|
my_apple1(
|
|
.clk25(clk25),
|
|
.rst_n(1'b1),
|
|
.uart_rx(uart_rx),
|
|
.uart_tx(uart_tx),
|
|
.uart_cts(uart_cts),
|
|
.clr_screen_btn(1'b0),
|
|
.vga_h_sync(vga_h_sync),
|
|
.vga_v_sync(vga_v_sync),
|
|
.vga_red(vga_red),
|
|
.vga_grn(vga_grn),
|
|
.vga_blu(vga_blu),
|
|
.pc_monitor(leds),
|
|
.ps2_select(1'b0), // no ps2 keyboard right now
|
|
);
|
|
|
|
endmodule
|