mirror of
https://github.com/Gehstock/Mist_FPGA.git
synced 2026-03-01 01:19:14 +00:00
175 lines
3.7 KiB
Systemverilog
175 lines
3.7 KiB
Systemverilog
module MyVision(
|
|
output LED,
|
|
output [5:0] VGA_R,
|
|
output [5:0] VGA_G,
|
|
output [5:0] VGA_B,
|
|
output VGA_HS,
|
|
output VGA_VS,
|
|
output AUDIO_L,
|
|
output AUDIO_R,
|
|
input SPI_SCK,
|
|
output SPI_DO,
|
|
input SPI_DI,
|
|
input SPI_SS2,
|
|
input SPI_SS3,
|
|
input CONF_DATA0,
|
|
input CLOCK_27
|
|
);
|
|
|
|
`include "rtl\build_id.v"
|
|
|
|
localparam CONF_STR = {
|
|
"MYVISION;bin;",
|
|
"O1,Joystick Swap,On,Off;",
|
|
// "O2,Joystick Control,Upright,Normal;",
|
|
"O34,Scandoubler Fx,None,CRT 25%,CRT 50%,CRT 75%;",
|
|
// "O5,Service,On,Off;",
|
|
"T0,Reset;",
|
|
"V,v1.00.",`BUILD_DATE
|
|
};
|
|
|
|
wire clk_sys, clk_3m58, pll_locked;
|
|
|
|
pll pll
|
|
(
|
|
.inclk0(CLOCK_27),
|
|
.areset(0),
|
|
.c0(clk_sys),//42.954545
|
|
.c1(clk_3m58),//3.579545
|
|
.locked(pll_locked)
|
|
);
|
|
|
|
wire [63:0] status;
|
|
wire [1:0] buttons;
|
|
wire [1:0] switches;
|
|
wire [31:0] joystick_0;
|
|
wire [31:0] joystick_1;
|
|
wire scandoublerD;
|
|
wire [1:0] scanlines = status[4:3];
|
|
wire [9:0] audio;
|
|
wire hsync,vsync;
|
|
assign LED = ~ioctl_downl;
|
|
wire blankn = ~(hb | vb);
|
|
wire hb, vb, hs, vs;
|
|
wire [7:0] r,b,g;
|
|
wire ypbpr;
|
|
wire no_csync;
|
|
wire key_strobe;
|
|
wire key_pressed;
|
|
wire [7:0] key_code;
|
|
wire key_extended;
|
|
|
|
mist_video #(
|
|
.COLOR_DEPTH(6),
|
|
.SD_HCNT_WIDTH(10))
|
|
mist_video(
|
|
.clk_sys(clk_sys),
|
|
.SPI_SCK(SPI_SCK),
|
|
.SPI_SS3(SPI_SS3),
|
|
.SPI_DI(SPI_DI),
|
|
.R(blankn ? r[7:2] : 0),
|
|
.G(blankn ? g[7:2] : 0),
|
|
.B(blankn ? b[7:2] : 0),
|
|
.HSync(hs),
|
|
.VSync(vs),
|
|
.VGA_R(VGA_R),
|
|
.VGA_G(VGA_G),
|
|
.VGA_B(VGA_B),
|
|
.VGA_VS(VGA_VS),
|
|
.VGA_HS(VGA_HS),
|
|
.ce_divider(1'b0),
|
|
.scandoubler_disable(scandoublerD),
|
|
.scanlines(scanlines),
|
|
.ypbpr(ypbpr)
|
|
);
|
|
|
|
user_io #(
|
|
.STRLEN($size(CONF_STR)>>3))
|
|
user_io(
|
|
.clk_sys (clk_sys ),
|
|
.conf_str (CONF_STR ),
|
|
.SPI_CLK (SPI_SCK ),
|
|
.SPI_SS_IO (CONF_DATA0 ),
|
|
.SPI_MISO (SPI_DO ),
|
|
.SPI_MOSI (SPI_DI ),
|
|
.buttons (buttons ),
|
|
.switches (switches ),
|
|
.scandoubler_disable (scandoublerD ),
|
|
.ypbpr (ypbpr ),
|
|
.key_strobe (key_strobe ),
|
|
.key_pressed (key_pressed ),
|
|
.key_code (key_code ),
|
|
.key_extended (key_extended ),
|
|
.joystick_0 (joystick_0 ),
|
|
.joystick_1 (joystick_1 ),
|
|
.status (status )
|
|
);
|
|
|
|
dac #(16) dac(
|
|
.clk_i(clk_sys),
|
|
.res_n_i(1),
|
|
.dac_i({audio,6'd0}),
|
|
.dac_o(AUDIO_L)
|
|
);
|
|
|
|
assign AUDIO_R = AUDIO_L;
|
|
|
|
wire [14:0] ram_a;
|
|
wire ram_we_n, ram_ce_n;
|
|
wire [7:0] ram_di;
|
|
wire [7:0] ram_do;
|
|
|
|
spram #(15, 8) ram//32k system uses only max 24k
|
|
(
|
|
.clock(clk_sys),
|
|
.address(ioctl_downl ? ioctl_addr[14:0] : ram_a),
|
|
.wren(ioctl_wr | ~ram_we_n),
|
|
.data(ioctl_downl ? ioctl_dout : ram_do),
|
|
.q(ram_di)
|
|
);
|
|
|
|
wire ioctl_downl;
|
|
wire [7:0] ioctl_index;
|
|
wire ioctl_wr;
|
|
wire [24:0] ioctl_addr;
|
|
wire [7:0] ioctl_dout;
|
|
|
|
data_io data_io(
|
|
.clk_sys ( clk_sys ),
|
|
.SPI_SCK ( SPI_SCK ),
|
|
.SPI_SS2 ( SPI_SS2 ),
|
|
.SPI_DI ( SPI_DI ),
|
|
.ioctl_download( ioctl_downl ),
|
|
.ioctl_index ( ioctl_index ),
|
|
.ioctl_wr ( ioctl_wr ),
|
|
.ioctl_addr ( ioctl_addr ),
|
|
.ioctl_dout ( ioctl_dout )
|
|
);
|
|
|
|
wire reset = status[0] | buttons[1] | ioctl_downl;
|
|
|
|
MyVision_top console(
|
|
.clk_3m58(clk_3m58),
|
|
.clk_sys(clk_sys),
|
|
.reset(reset),
|
|
.audio(audio),
|
|
////////////// CPU RAM Interface //////////////
|
|
.cpu_ram_a_o(ram_a),
|
|
.cpu_ram_ce_n_o(ram_ce_n),
|
|
.cpu_ram_we_n_o(ram_we_n),
|
|
.cpu_ram_d_i(ram_di),
|
|
.cpu_ram_d_o(ram_do),
|
|
.joy0(joystick_0),
|
|
.joy1(joystick_1),
|
|
.ps2_key({key_strobe,key_pressed,key_extended,key_code}),
|
|
.HBlank(hb),
|
|
.HSync(hs),
|
|
.VBlank(vb),
|
|
.VSync(vs),
|
|
.ce_pix(),
|
|
.rgb_r_o(r),
|
|
.rgb_g_o(g),
|
|
.rgb_b_o(b)
|
|
);
|
|
|
|
endmodule
|