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add turbosound

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UzixLS
2021-05-04 20:57:07 +03:00
parent e67f3352ae
commit 2ab04059a3
3 changed files with 114 additions and 60 deletions
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84
fpga/rtl/top.sv
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@ -281,65 +281,30 @@ ports ports0 (
);
/* AY */
reg ay_clk;
reg ay_bdir;
reg ay_bc1;
reg ay_sel;
wire ay_rd0 = ay_bc1 & ~ay_bdir & ~ay_sel;
wire ay_rd1 = ay_bc1 & ~ay_bdir & ay_sel;
wire port_bffd = bus.ioreq && bus.a[15] == 1'b1 && bus.a[7:0] == 8'hFD;
wire port_fffd = bus.ioreq && bus.a[15] == 1'b1 && bus.a[14] == 1'b1 && bus.a[7:0] == 8'hFD;
always @(posedge clk28 or negedge rst_n) begin
if (!rst_n) begin
ay_clk <= 0;
ay_bc1 <= 0;
ay_bdir <= 0;
end
else begin
if (ck35)
ay_clk = pause | ~ay_clk;
ay_bc1 <= ay_sel && port_fffd;
ay_bdir <= ay_sel && port_bffd && bus.wr;
if (bus.ioreq && port_fffd && bus.wr && bus.d[7:3] == 5'b11111)
ay_sel <= ~bus.d[0];
end
end
wire [7:0] ay_dout0, ay_dout1;
/* AY TURBOSOUND */
wire turbosound_dout_active;
wire [7:0] turbosound_dout;
wire [7:0] ay_a0, ay_b0, ay_c0, ay_a1, ay_b1, ay_c1;
YM2149 ym2149_0(
.CLK(clk28),
.ENA(1'b0),
.RESET_H(~rst_n),
.I_SEL_L(1'b1),
.I_DA(bus.d),
.O_DA(ay_dout0),
.busctrl_addr(ay_bc1),
.busctrl_we(ay_bdir & ~ay_sel),
.ctrl_aymode(1'b1),
.port_a_i(8'hff),
.port_b_i(8'hff),
.O_AUDIO_A(ay_a0),
.O_AUDIO_B(ay_b0),
.O_AUDIO_C(ay_c0)
);
YM2149 ym2149_1(
.CLK(clk28),
.ENA(1'b0),
.RESET_H(~rst_n),
.I_SEL_L(1'b1),
.I_DA(bus.d),
.O_DA(ay_dout1),
.busctrl_addr(ay_bc1),
.busctrl_we(ay_bdir & ay_sel),
.ctrl_aymode(1'b1),
.port_a_i(8'hff),
.port_b_i(8'hff),
.O_AUDIO_A(ay_a1),
.O_AUDIO_B(ay_b1),
.O_AUDIO_C(ay_c1)
);
turbosound turbosound0(
.rst_n(rst_n & usrrst_n),
.clk28(clk28),
.ck35(ck35),
.en(1'b0),
.bus(bus),
.d_out(turbosound_dout),
.d_out_active(turbosound_dout_active),
.pause(pause),
.ay_a0(ay_a0),
.ay_b0(ay_b0),
.ay_c0(ay_c0),
.ay_a1(ay_a1),
.ay_b1(ay_b1),
.ay_c1(ay_c1)
);
/* COVOX & SOUNDRIVE */
reg [7:0] soundrive_l0, soundrive_l1, soundrive_r0, soundrive_r1;
@ -565,9 +530,8 @@ assign va[18:0] =
assign vd[7:0] =
rom2ram_ram_wren? rom2ram_dataout :
port_ff3b_rd? port_ff3b_data :
ay_rd0? ay_dout0 :
ay_rd1? ay_dout1 :
div_dout_active? div_dout :
turbosound_dout_active? turbosound_dout :
ports_dout_active? ports_dout :
cpucontrol_dout_active? cpucontrol_dout :
{8{1'bz}};