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Including more frequencies around the lower clock speeds (#15)

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* Including more low frequencies - hopefully to help debug issues with N64 on Mister Pi boards

* Including even more frequencies (625 is 62.5MHz, the SDRAM clock for N64). Included Excel spreadsheet with frequency calculations

* Changing the parameters for 62.5MHz to more closely follow the PLL MegaWizard's recommendation for this frequency

* Updating all clock frequencies to match the output of the PLL MegaWizard
This commit is contained in:
AlmeidaRW
2024-12-28 01:05:00 -05:00
committed by GitHub
parent dd1724c231
commit 2ef29982db
3 changed files with 32 additions and 6 deletions
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PLL calculations.xlsx Normal file
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2
memtest.qsf
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@@ -13,7 +13,7 @@ set_global_assignment -name PARTITION_NETLIST_TYPE SOURCE -section_id Top
set_global_assignment -name PARTITION_FITTER_PRESERVATION_LEVEL PLACEMENT_AND_ROUTING -section_id Top
set_global_assignment -name PARTITION_COLOR 16764057 -section_id Top
set_global_assignment -name LAST_QUARTUS_VERSION "17.0.2 Standard Edition"
set_global_assignment -name LAST_QUARTUS_VERSION "17.0.2 Lite Edition"
set_global_assignment -name GENERATE_RBF_FILE ON
set_global_assignment -name PROJECT_OUTPUT_DIRECTORY output_files

36
memtest.sv
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@@ -256,7 +256,7 @@ pll_cfg pll_cfg
reg recfg = 0;
reg pll_reset = 0;
wire [31:0] cfg_param[152] =
wire [31:0] cfg_param[256] =
'{ // M K C
'h167, 'h00808, 'hB33332DD, 'h20302,
'h160, 'h00808, 'h00000001, 'h20302,
@@ -295,7 +295,33 @@ wire [31:0] cfg_param[152] =
'h100, 'h00404, 'h00000001, 'h00202,
'h90, 'h00707, 'h66666666, 'h00404,
'h80, 'h00707, 'h66666666, 'h20504,
'h70, 'h00707, 'h00000001, 'h00505
'h70, 'h00707, 'h00000001, 'h00505,
'h69, 'h00404, 'h47AE147B, 'h00303,
'h68, 'h00404, 'h28F5C28F, 'h00303,
'h67, 'h00505, 'hB851EB85, 'h00404,
'h66, 'h00505, 'h8F5C28F6, 'h00404,
'h65, 'h20706, 'h00000001, 'h00505,
'h64, 'h00606, 'hCCCCCCCD, 'h00505,
'h63, 'h00606, 'h9999999A, 'h00505,
'h625, 'h00404, 'hC0000000, 'h20403,
'h62, 'h00606, 'h66666666, 'h00505,
'h61, 'h00606, 'h33333333, 'h00505,
'h60, 'h00404, 'h66666611, 'h20403,
'h59, 'h00404, 'h428F5C29, 'h20403,
'h58, 'h00404, 'h1EB851EC, 'h20403,
'h57, 'h20504, 'h1EB851EC, 'h00404,
'h56, 'h00505, 'h147AE148, 'h20504,
'h55, 'h00404, 'hCCCCCCCD, 'h00404,
'h54, 'h00404, 'hA3D709E8, 'h00404,
'h53, 'h00404, 'h7AE14758, 'h00404,
'h52, 'h00404, 'h51EB851F, 'h00404,
'h51, 'h00404, 'h28F5C239, 'h00404,
'h50, 'h00404, 'h00000001, 'h00404,
'h49, 'h00404, 'hD1EB851F, 'h20504,
'h48, 'h00404, 'hA3D709E8, 'h20504,
'h47, 'h00404, 'h75C28F06, 'h20504,
'h46, 'h00404, 'h47AE147B, 'h20504,
'h45, 'h00404, 'h1999999A, 'h20504
};
reg [5:0] pos = 0;
@@ -339,7 +365,7 @@ always @(posedge CLK_50M) begin
// N
3: begin
mgmt_address <= 3;
mgmt_writedata <= 'h10000;
mgmt_writedata <= 'h10000; //N-counter is bypassed
mgmt_write <= 1;
end
@@ -418,7 +444,7 @@ always @(posedge CLK_50M) begin
pos <= pos - 1'd1;
auto <= 0;
end
if((ps2_key[7:0] == 'h72 || (~old_joy[2] && joystick_0[2])) && pos < 37) begin
if((ps2_key[7:0] == 'h72 || (~old_joy[2] && joystick_0[2])) && pos < 63) begin
recfg <= 1;
pos <= pos + 1'd1;
auto <= 0;
@@ -439,7 +465,7 @@ always @(posedge CLK_50M) begin
end
end
if(auto && (failcount && passcount) && !recfg && pos < 37) begin
if(auto && (failcount && passcount) && !recfg && pos < 63) begin
recfg <= 1;
pos <= pos + 1'd1;
end