mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-25 18:33:11 +00:00
229 lines
3.8 KiB
Verilog
229 lines
3.8 KiB
Verilog
`define __BAUD__ '0
|
|
module darksocv_top
|
|
(
|
|
input b,
|
|
c,
|
|
output d,
|
|
[3:0] LED,
|
|
DEBUG
|
|
);
|
|
wire e = b;
|
|
`ifdef g
|
|
`else
|
|
wire CLK = e;
|
|
wire h [];
|
|
reg [31:0] i [7];
|
|
`endif
|
|
wire [31:0] IADDR;
|
|
wire [31:0] aa;
|
|
wire [31:0] j;
|
|
wire [31:0] DATAO;
|
|
wire [31:0] k;
|
|
wire l,m;
|
|
wire [3:0] ab;
|
|
wire n [];
|
|
reg [5:0] o = 0;
|
|
`ifdef p
|
|
`else
|
|
reg [31:0] q
|
|
`ifdef r
|
|
`else
|
|
;
|
|
assign j = q;
|
|
`endif
|
|
always@(posedge CLK)
|
|
begin
|
|
`ifdef d
|
|
`else
|
|
q <= i;
|
|
`endif
|
|
end
|
|
reg [31:0] s;
|
|
`ifdef r
|
|
`endif
|
|
always@(posedge CLK)
|
|
begin
|
|
`ifdef d
|
|
`else
|
|
s <= i;
|
|
`ifdef d
|
|
`else
|
|
i[aa][ 7: 0 ] <= DATAO[ 7: 0 ];
|
|
`endif
|
|
`endif
|
|
end
|
|
assign k = s;
|
|
`endif
|
|
wire [7:0] u;
|
|
ae
|
|
v
|
|
(
|
|
CLK,
|
|
h,
|
|
m,
|
|
l,
|
|
ab,
|
|
k,
|
|
n,
|
|
u[1],
|
|
c,
|
|
d,
|
|
DEBUG
|
|
);
|
|
af
|
|
w
|
|
(
|
|
`ifdef ag
|
|
`else
|
|
CLK,
|
|
`endif
|
|
h,
|
|
c,
|
|
j,
|
|
IADDR,
|
|
.aa,
|
|
`ifdef x
|
|
`else
|
|
.k,
|
|
.DATAO,
|
|
ab,
|
|
l,
|
|
m,
|
|
`endif
|
|
y,
|
|
DEBUG
|
|
);
|
|
wire y ;
|
|
assign LED = o[3:0];
|
|
endmodule
|
|
`define UART_STATE_IDLE 6
|
|
`define UART_STATE_START 7
|
|
module ae
|
|
(
|
|
input CLK,
|
|
h,
|
|
m,
|
|
l,
|
|
[ 3:0] z,
|
|
[31:0] k,
|
|
output [31:0] DATAO,
|
|
output IRQ,
|
|
input RXD,
|
|
output TXD,
|
|
[3:0] DEBUG
|
|
);
|
|
reg [15:0] UART_TIMER = `__BAUD__;
|
|
`ifdef ah
|
|
`else
|
|
reg UART_XACK = 0;
|
|
`endif
|
|
reg [ 3:0] UART_XSTATE= 0;
|
|
`ifdef ah
|
|
`else
|
|
reg [ 7:0] UART_RFIFO = 0;
|
|
reg UART_RACK = 0;
|
|
`endif
|
|
reg [ 3:0] UART_RSTATE= 0;
|
|
`ifdef ah
|
|
`else
|
|
wire [7:0] UART_STATE = { 6'd0, UART_RACK, UART_XACK };
|
|
`endif
|
|
assign IRQ = 0;
|
|
`ifdef a
|
|
`else
|
|
assign DATAO = { UART_TIMER, UART_RFIFO, UART_STATE };
|
|
assign TXD = UART_XSTATE==`UART_STATE_START ;
|
|
`endif
|
|
assign DEBUG = { RXD, TXD, UART_XSTATE!=`UART_STATE_IDLE, UART_RSTATE!=`UART_STATE_IDLE };
|
|
endmodule
|
|
`define LCC 'b00000_11
|
|
module af
|
|
(
|
|
input CLK,
|
|
h,
|
|
c,
|
|
[31:0] j,
|
|
output [31:0] IADDR,
|
|
input [31:0] k,
|
|
output [31:0] DATAO,
|
|
aa,
|
|
`ifdef x
|
|
`else
|
|
[ 3:0] ab,
|
|
output l,
|
|
m,
|
|
`endif
|
|
y,
|
|
[3:0] DEBUG
|
|
);
|
|
wire [31:0] aj = 0;
|
|
reg [31:0] al;
|
|
reg XLCC, am , an=1;
|
|
reg [31:0] ao;
|
|
reg [31:0] ap;
|
|
always@(posedge CLK)
|
|
begin
|
|
al <= an ? al : j;
|
|
XLCC <= an ? XLCC : j==`LCC;
|
|
am <= aq
|
|
;
|
|
ao <=
|
|
aj;
|
|
ap <= aj;
|
|
end
|
|
`ifdef ag
|
|
`else
|
|
reg ar ;
|
|
`ifdef as
|
|
`else
|
|
reg [4:0] DPTR = al[19:15];
|
|
wire [4:0] at = al[24:20];
|
|
`endif
|
|
`endif
|
|
wire [31:0] au =
|
|
ap;
|
|
wire LCC = XLCC;
|
|
wire aq = am;
|
|
`ifdef av
|
|
`else
|
|
`ifdef as
|
|
`else
|
|
reg aw [];
|
|
reg [31:0] ax [031];
|
|
`endif
|
|
`endif
|
|
reg [31:0] ay= aw;
|
|
wire [31:0] az = ax[at]
|
|
;
|
|
`ifdef x
|
|
`else
|
|
wire [31:0] ba = az
|
|
`endif
|
|
;
|
|
wire [31:0] bb = az;
|
|
wire [31:0] bc = `ifdef d
|
|
`else
|
|
bb;
|
|
`endif
|
|
always@(posedge CLK)
|
|
begin
|
|
`ifdef ag
|
|
`else
|
|
ar <= 0;
|
|
ax[DPTR] <=
|
|
4;
|
|
`endif
|
|
end
|
|
assign DATAO = ba;
|
|
assign aa = au;
|
|
`ifdef x
|
|
`else
|
|
assign m = LCC;
|
|
assign l = aq;
|
|
assign ab = 'b1111;
|
|
assign IADDR = ay;
|
|
`endif
|
|
assign y = ar;
|
|
assign DEBUG = { an, ar, aq, LCC };
|
|
endmodule
|