jackcartersmith/Speech256
1
0
Fork 0
mirror of https://github.com/trcwm/Speech256.git synced 2025-06-07 16:48:32 +02:00
Code Issues Projects Releases Wiki Activity

Re-instated the PWMDAC, as SDDAC will sound sh*t without a proper interpolator

Browse Source
This commit is contained in:
Niels Moseley 2017-10-26 16:56:55 +02:00
parent a2432a5e55
commit 5d7c52c0e7
1 changed files with 16 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
boards/Digilent DE0/speech256_de0.v
View File

@ -5,7 +5,7 @@
// http://www.moseleyinstruments.com
//
`define USE_SDDAC
//`define USE_SDDAC
module Speech256_DE0 (
CLOCK_50,
@ -27,7 +27,7 @@ module Speech256_DE0 (
reg [3:0] divcnt; // clock divider counter
reg [2:0] cur_state, next_state;
reg [2:0] rom_addr;
reg [3:0] rom_addr;
reg [5:0] rom_data;
reg inc_rom_addr;
@ -94,7 +94,8 @@ module Speech256_DE0 (
case(cur_state)
S_IDLE:
begin
if ((ldq == 1) && (BUTTON[0] == 1))
//if ((ldq == 1) && (BUTTON[0] == 1))
if (ldq == 1)
begin
inc_rom_addr <= 1;
next_state <= S_ALLOPHONE;
@ -111,7 +112,6 @@ module Speech256_DE0 (
begin
if (ldq == 0)
begin
inc_rom_addr <= 1;
next_state <= S_IDLE;
end
end
@ -124,30 +124,30 @@ module Speech256_DE0 (
// allophone ROM
// hello, world
case (rom_addr)
3'd0:
4'd0:
rom_data <= 6'h1B;
3'd1:
4'd1:
rom_data <= 6'h07;
3'd2:
4'd2:
rom_data <= 6'h2D;
3'd3:
4'd3:
rom_data <= 6'h35;
3'd4:
4'd4:
rom_data <= 6'h03;
3'd5:
4'd5:
rom_data <= 6'h2E;
3'd6:
4'd6:
rom_data <= 6'h1E;
3'd7:
4'd7:
rom_data <= 6'h33;
3'd8:
4'd8:
rom_data <= 6'h2D;
3'd9:
4'd9:
rom_data <= 6'h15;
3'd10:
4'd10:
rom_data <= 6'h03;
default:
rom_data <= 6'h00;
rom_data <= 6'h03;
endcase
end