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Added cache module

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Update VGA module
  Quadrupled pixel clock
  Doubled resolution to 1280x800
Added ZigZag encode/decode to ALU
This commit is contained in:
Gabriel Tofvesson 2018-10-18 03:08:06 +02:00
parent 8472077a4b
commit e7f9e007d9
7 changed files with 397 additions and 26 deletions
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3
.gitignore vendored
View File

@ -24,4 +24,5 @@ incremental_db/*
*.qws
*.qsf
*.qpf
.sopc_builder/*
.sopc_builder/*
.qsys_edit/*

12
ALU.v
View File

@ -94,7 +94,7 @@ always @* begin
101 -> a >= b
110 -> a <= b
111 -> No output
*/
i_z <= (op[7:5] == 3'b000) || (op[7:5] == 3'b011) || (op[7:5] == 3'b111) ? 16'b0 : (op[5] && a > b) || (op[6] && a < b ) || (op[7] && a == b) ? 16'b1 : 16'b0;
i_flg <=
@ -168,7 +168,15 @@ always @* begin
? 8'b1 : 8'b0;
end
*/
// ZZ_ED (flag: decode)
12: begin
i_z <= op[7] ?
{a[0], a[BITS-1:1] ^ (a[0] ? {(BITS-1){1'b1}} : 1'b0)} : // Decode
{a[BITS-2:0] ^ (a[BITS-1] ? {(BITS-1){1'b1}} : 1'b0), a[BITS-1]}; // Encode
i_flg <= 8'b0;
end
// SHR (flag: rotate)
13: begin
shift_rotate <= op[5];

56
SevenSegment.v
View File

@ -24,7 +24,7 @@ module SevenSegment(
);
// ---- SETTINGS ---- //
localparam PLL_SELECT = 1; // 0: 100MHz, 1: 200MHz, 2: 300MHz, 3: 400MHz, 4: 50MHz
localparam PLL_SELECT = 3; // 0: 100MHz, 1: 200MHz, 2: 300MHz, 3: 400MHz, 4: 50MHz
localparam RAM_PLL = 0; // Must be either 0 or 1. DO NOT SET TO ANY OTHER VALUE AS IT MIGHT FRY THE ONBOARD RAM!!!
// ---- REGISTERS ---- //
@ -39,6 +39,10 @@ reg [2:0] gfx_rgb; // VGA color channels
reg [1:0] ram_bank_sel; // Which ram bank to access
reg [11:0] ram_addr; // RAM address selection
reg ram_close; // RAM close-row trigger
reg [7:0] cache0_addr; // Cache0 access address
reg [15:0] cache0_data = 16'b0; // Data to write to cache0
reg cache0_write; // Write-enable for cache0
// ---- WIRES ---- //
wire [7:0] seg_buf[0:3]; // Encoded segment buffer (8-bit expanded 4-bit number buffer)
@ -47,11 +51,16 @@ wire [7:0] alu_flags; // ALU (core0) output flags
wire [4:0] pll; // Phase-locked-loop connections (+ source clock)
wire vga_clk; // VGA data clock
wire cb; // Callback/timeout
wire [9:0] vga_coords[0:1]; // Current screen coordinates being drawn to
wire [11:0] vga_coords[0:1]; // Current screen coordinates being drawn to
wire ram_request_read; // Trigger a read operation from main memory
wire ram_request_write; // Trigger a write operation from main memory
wire ram_event; // Event trigger from ram when a r/w operation is ready
wire [1:0] ram_event_bank; // Which bank an event is happening on
wire [15:0] cache0_dq; // Data out from cache0
wire i_latch = ~latch; // Latch input wire
wire i_value = ~value; // Value input wire
wire i_next = ~next; // Next input wire
wire i_write = ~write; // Write input wire
// ---- WIRE ASSIGNS ---- //
assign pll[4] = clk;
@ -78,8 +87,11 @@ SegmentManager seg_display(
.segments (seg_write)
);
// 4096-bit internal cache memory
//cache c0(cache0_addr, pll[PLL_SELECT], cache0_data, cache0_write, cache0_dq);
// Graphics controller
VGA screen(clk, gfx_rgb, vga_clk, vga_coords[0], vga_coords[1], VGA_rgb, VGA_hsync, VGA_vsync);
VGA screen(pll[0], gfx_rgb, vga_clk, vga_coords[0], vga_coords[1], VGA_rgb, VGA_hsync, VGA_vsync);
// Arithmetic logic unit
ALU #(.BITS(8), .LOG2_BITS(3)) core0(.a(alu_a), .b(alu_b), .op(alu_op), .z(alu_out), .o_flags(alu_flags));
@ -112,6 +124,43 @@ RAM main_memory(
ram_event_bank
);
// 1280x800 screen
always @(posedge pll[3]) begin
gfx_rgb <= vga_coords[0] == 0 || vga_coords[0] == 1278 || vga_coords[1] == 0 || vga_coords[1] == 799 ? 3'b111 : 3'b0; // Draw border along edge of screen
end
always @(posedge i_latch or posedge i_write or posedge i_value or posedge i_next or posedge pll[PLL_SELECT]) begin
if(i_latch) debounce <= 1'b1;
else if(i_write) begin
debounce <= 1'b0;
if(debounce) begin
if(cache0_write) cache0_data <= cache0_data + 1'b1;
else cache0_write <= 1'b1;
end
end
else if(i_value) begin
debounce <= 1'b0;
if(debounce) begin
if(!cache0_write) cache0_addr <= cache0_addr + 1'b1;
else cache0_write <= 1'b0;
end
end
else if(i_next) begin
debounce <= 1'b0;
if(debounce) begin
if(!cache0_write) cache0_addr <= cache0_addr - 1'b1;
else cache0_write <= 1'b0;
end
end
else if(pll[PLL_SELECT]) begin
seg_buf_numbers[3] <= cache0_dq[3:0];
seg_buf_numbers[2] <= cache0_dq[7:4];
seg_buf_numbers[1] <= cache0_dq[11:8];
seg_buf_numbers[0] <= cache0_dq[15:12];
select_out <= {debounce ? 1'b0 : 1'b1, cache0_write ? 1'b0 : 1'b1, 2'b11};
end
end
/*
always @(posedge cb or negedge value) select_out <= cb ? 4'b0000 : 4'b1111;
always @(posedge vga_clk) gfx_rgb <= alu_a[2:0];
always @(posedge pll[PLL_SELECT]) begin
@ -182,4 +231,5 @@ always @(posedge pll[PLL_SELECT]) begin
//select_out[2] <= next;
//select_out[3] <= latch;
end
*/
endmodule

50
VGA.v
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@ -1,26 +1,35 @@
module VGA(
input wire clk,
input wire [2:0] rgb_data,
output reg graphics_clk,
output wire [9:0] graphics_coords_x,
output wire [9:0] graphics_coords_y,
output wire graphics_trigger,
output wire [11:0] graphics_coords_x,
output wire [11:0] graphics_coords_y,
output wire [2:0] VGA_rgb,
output wire VGA_hsync,
output wire VGA_vsync
);
parameter
hsync_end = 10'd95,
hdat_begin = 10'd143,
hdat_end = 10'd783,
hpixel_end = 10'd799,
vsync_end = 10'd1,
vdat_begin = 10'd34,
vdat_end = 10'd514,
vline_end = 10'd524;
//hsync_end = 10'd95,
//hdat_begin = 10'd143,
//hdat_end = 10'd783,
//hpixel_end = 10'd799,
//vsync_end = 10'd1,
//vdat_begin = 10'd34,
//vdat_end = 10'd514,
//vline_end = 10'd524;
hsync_end = 11'd190,
hdat_begin = 11'd286,
hdat_end = 11'd1566,
hpixel_end = 11'd1598,
vsync_end = 11'd1,
vdat_begin = 11'd68,
vdat_end = 11'd1028,
vline_end = 11'd1048;
reg [9:0] hcount;
reg [9:0] vcount;
reg [11:0] hcount;
reg [11:0] vcount;
wire graphics_clk = clk;
wire hcount_ov = (hcount == hpixel_end);
wire vcount_ov = (vcount == vline_end);
@ -29,17 +38,18 @@ wire dat_act = ((hcount >= hdat_begin) && (hcount < hdat_end)) && ((vcount >= vd
assign VGA_hsync = (hcount > hsync_end);
assign VGA_vsync = (vcount > vsync_end);
assign VGA_rgb = (dat_act) ? rgb_data : 3'b0;
assign graphics_coords_x = vcount;
assign graphics_coords_y = hcount;
assign graphics_coords_x = hcount - hdat_begin;
assign graphics_coords_y = vcount - vdat_begin;
assign graphics_trigger = dat_act & graphics_clk;
// Clock divider
always @(posedge clk) graphics_clk = ~graphics_clk;
//always @(posedge clk) graphics_clk = ~graphics_clk;
// Graphics boundary calculation
always @(posedge graphics_clk) begin
if(hcount_ov && vcount_ov) vcount <= 10'b0;
else if(hcount_ov) vcount <= vcount + 10'b1;
if (hcount_ov) hcount <= 10'd0;
else hcount <= hcount + 10'd1;
if(hcount_ov && vcount_ov) vcount <= 11'b0;
else if(hcount_ov) vcount <= vcount + 11'b1;
if (hcount_ov) hcount <= 11'd0;
else hcount <= hcount + 11'd1;
end
endmodule

4
cache.qip Normal file
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@ -0,0 +1,4 @@
set_global_assignment -name IP_TOOL_NAME "RAM: 1-PORT"
set_global_assignment -name IP_TOOL_VERSION "12.0"
set_global_assignment -name VERILOG_FILE [file join $::quartus(qip_path) "cache.v"]
set_global_assignment -name MISC_FILE [file join $::quartus(qip_path) "cache_bb.v"]

174
cache.v Normal file
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@ -0,0 +1,174 @@
// megafunction wizard: %RAM: 1-PORT%
// GENERATION: STANDARD
// VERSION: WM1.0
// MODULE: altsyncram
// ============================================================
// File Name: cache.v
// Megafunction Name(s):
// altsyncram
//
// Simulation Library Files(s):
// altera_mf
// ============================================================
// ************************************************************
// THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!
//
// 12.0 Build 178 05/31/2012 SJ Web Edition
// ************************************************************
//Copyright (C) 1991-2012 Altera Corporation
//Your use of Altera Corporation's design tools, logic functions
//and other software and tools, and its AMPP partner logic
//functions, and any output files from any of the foregoing
//(including device programming or simulation files), and any
//associated documentation or information are expressly subject
//to the terms and conditions of the Altera Program License
//Subscription Agreement, Altera MegaCore Function License
//Agreement, or other applicable license agreement, including,
//without limitation, that your use is for the sole purpose of
//programming logic devices manufactured by Altera and sold by
//Altera or its authorized distributors. Please refer to the
//applicable agreement for further details.
// synopsys translate_off
`timescale 1 ps / 1 ps
// synopsys translate_on
module cache (
address,
clock,
data,
wren,
q);
input [7:0] address;
input clock;
input [15:0] data;
input wren;
output [15:0] q;
`ifndef ALTERA_RESERVED_QIS
// synopsys translate_off
`endif
tri1 clock;
`ifndef ALTERA_RESERVED_QIS
// synopsys translate_on
`endif
wire [15:0] sub_wire0;
wire [15:0] q = sub_wire0[15:0];
altsyncram altsyncram_component (
.address_a (address),
.clock0 (clock),
.data_a (data),
.wren_a (wren),
.q_a (sub_wire0),
.aclr0 (1'b0),
.aclr1 (1'b0),
.address_b (1'b1),
.addressstall_a (1'b0),
.addressstall_b (1'b0),
.byteena_a (1'b1),
.byteena_b (1'b1),
.clock1 (1'b1),
.clocken0 (1'b1),
.clocken1 (1'b1),
.clocken2 (1'b1),
.clocken3 (1'b1),
.data_b (1'b1),
.eccstatus (),
.q_b (),
.rden_a (1'b1),
.rden_b (1'b1),
.wren_b (1'b0));
defparam
altsyncram_component.clock_enable_input_a = "BYPASS",
altsyncram_component.clock_enable_output_a = "BYPASS",
altsyncram_component.intended_device_family = "Cyclone IV E",
altsyncram_component.lpm_hint = "ENABLE_RUNTIME_MOD=NO",
altsyncram_component.lpm_type = "altsyncram",
altsyncram_component.numwords_a = 256,
altsyncram_component.operation_mode = "SINGLE_PORT",
altsyncram_component.outdata_aclr_a = "NONE",
altsyncram_component.outdata_reg_a = "CLOCK0",
altsyncram_component.power_up_uninitialized = "FALSE",
altsyncram_component.ram_block_type = "M9K",
altsyncram_component.read_during_write_mode_port_a = "NEW_DATA_NO_NBE_READ",
altsyncram_component.widthad_a = 8,
altsyncram_component.width_a = 16,
altsyncram_component.width_byteena_a = 1;
endmodule
// ============================================================
// CNX file retrieval info
// ============================================================
// Retrieval info: PRIVATE: ADDRESSSTALL_A NUMERIC "0"
// Retrieval info: PRIVATE: AclrAddr NUMERIC "0"
// Retrieval info: PRIVATE: AclrByte NUMERIC "0"
// Retrieval info: PRIVATE: AclrData NUMERIC "0"
// Retrieval info: PRIVATE: AclrOutput NUMERIC "0"
// Retrieval info: PRIVATE: BYTE_ENABLE NUMERIC "0"
// Retrieval info: PRIVATE: BYTE_SIZE NUMERIC "8"
// Retrieval info: PRIVATE: BlankMemory NUMERIC "1"
// Retrieval info: PRIVATE: CLOCK_ENABLE_INPUT_A NUMERIC "0"
// Retrieval info: PRIVATE: CLOCK_ENABLE_OUTPUT_A NUMERIC "0"
// Retrieval info: PRIVATE: Clken NUMERIC "0"
// Retrieval info: PRIVATE: DataBusSeparated NUMERIC "1"
// Retrieval info: PRIVATE: IMPLEMENT_IN_LES NUMERIC "0"
// Retrieval info: PRIVATE: INIT_FILE_LAYOUT STRING "PORT_A"
// Retrieval info: PRIVATE: INIT_TO_SIM_X NUMERIC "0"
// Retrieval info: PRIVATE: INTENDED_DEVICE_FAMILY STRING "Cyclone IV E"
// Retrieval info: PRIVATE: JTAG_ENABLED NUMERIC "0"
// Retrieval info: PRIVATE: JTAG_ID STRING "NONE"
// Retrieval info: PRIVATE: MAXIMUM_DEPTH NUMERIC "0"
// Retrieval info: PRIVATE: MIFfilename STRING ""
// Retrieval info: PRIVATE: NUMWORDS_A NUMERIC "256"
// Retrieval info: PRIVATE: RAM_BLOCK_TYPE NUMERIC "2"
// Retrieval info: PRIVATE: READ_DURING_WRITE_MODE_PORT_A NUMERIC "3"
// Retrieval info: PRIVATE: RegAddr NUMERIC "1"
// Retrieval info: PRIVATE: RegData NUMERIC "1"
// Retrieval info: PRIVATE: RegOutput NUMERIC "1"
// Retrieval info: PRIVATE: SYNTH_WRAPPER_GEN_POSTFIX STRING "0"
// Retrieval info: PRIVATE: SingleClock NUMERIC "1"
// Retrieval info: PRIVATE: UseDQRAM NUMERIC "1"
// Retrieval info: PRIVATE: WRCONTROL_ACLR_A NUMERIC "0"
// Retrieval info: PRIVATE: WidthAddr NUMERIC "8"
// Retrieval info: PRIVATE: WidthData NUMERIC "16"
// Retrieval info: PRIVATE: rden NUMERIC "0"
// Retrieval info: LIBRARY: altera_mf altera_mf.altera_mf_components.all
// Retrieval info: CONSTANT: CLOCK_ENABLE_INPUT_A STRING "BYPASS"
// Retrieval info: CONSTANT: CLOCK_ENABLE_OUTPUT_A STRING "BYPASS"
// Retrieval info: CONSTANT: INTENDED_DEVICE_FAMILY STRING "Cyclone IV E"
// Retrieval info: CONSTANT: LPM_HINT STRING "ENABLE_RUNTIME_MOD=NO"
// Retrieval info: CONSTANT: LPM_TYPE STRING "altsyncram"
// Retrieval info: CONSTANT: NUMWORDS_A NUMERIC "256"
// Retrieval info: CONSTANT: OPERATION_MODE STRING "SINGLE_PORT"
// Retrieval info: CONSTANT: OUTDATA_ACLR_A STRING "NONE"
// Retrieval info: CONSTANT: OUTDATA_REG_A STRING "CLOCK0"
// Retrieval info: CONSTANT: POWER_UP_UNINITIALIZED STRING "FALSE"
// Retrieval info: CONSTANT: RAM_BLOCK_TYPE STRING "M9K"
// Retrieval info: CONSTANT: READ_DURING_WRITE_MODE_PORT_A STRING "NEW_DATA_NO_NBE_READ"
// Retrieval info: CONSTANT: WIDTHAD_A NUMERIC "8"
// Retrieval info: CONSTANT: WIDTH_A NUMERIC "16"
// Retrieval info: CONSTANT: WIDTH_BYTEENA_A NUMERIC "1"
// Retrieval info: USED_PORT: address 0 0 8 0 INPUT NODEFVAL "address[7..0]"
// Retrieval info: USED_PORT: clock 0 0 0 0 INPUT VCC "clock"
// Retrieval info: USED_PORT: data 0 0 16 0 INPUT NODEFVAL "data[15..0]"
// Retrieval info: USED_PORT: q 0 0 16 0 OUTPUT NODEFVAL "q[15..0]"
// Retrieval info: USED_PORT: wren 0 0 0 0 INPUT NODEFVAL "wren"
// Retrieval info: CONNECT: @address_a 0 0 8 0 address 0 0 8 0
// Retrieval info: CONNECT: @clock0 0 0 0 0 clock 0 0 0 0
// Retrieval info: CONNECT: @data_a 0 0 16 0 data 0 0 16 0
// Retrieval info: CONNECT: @wren_a 0 0 0 0 wren 0 0 0 0
// Retrieval info: CONNECT: q 0 0 16 0 @q_a 0 0 16 0
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.v TRUE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.inc FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.cmp FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.bsf FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache_inst.v FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache_bb.v TRUE
// Retrieval info: LIB_FILE: altera_mf

124
cache_bb.v Normal file
View File

@ -0,0 +1,124 @@
// megafunction wizard: %RAM: 1-PORT%VBB%
// GENERATION: STANDARD
// VERSION: WM1.0
// MODULE: altsyncram
// ============================================================
// File Name: cache.v
// Megafunction Name(s):
// altsyncram
//
// Simulation Library Files(s):
// altera_mf
// ============================================================
// ************************************************************
// THIS IS A WIZARD-GENERATED FILE. DO NOT EDIT THIS FILE!
//
// 12.0 Build 178 05/31/2012 SJ Web Edition
// ************************************************************
//Copyright (C) 1991-2012 Altera Corporation
//Your use of Altera Corporation's design tools, logic functions
//and other software and tools, and its AMPP partner logic
//functions, and any output files from any of the foregoing
//(including device programming or simulation files), and any
//associated documentation or information are expressly subject
//to the terms and conditions of the Altera Program License
//Subscription Agreement, Altera MegaCore Function License
//Agreement, or other applicable license agreement, including,
//without limitation, that your use is for the sole purpose of
//programming logic devices manufactured by Altera and sold by
//Altera or its authorized distributors. Please refer to the
//applicable agreement for further details.
module cache (
address,
clock,
data,
wren,
q);
input [7:0] address;
input clock;
input [15:0] data;
input wren;
output [15:0] q;
`ifndef ALTERA_RESERVED_QIS
// synopsys translate_off
`endif
tri1 clock;
`ifndef ALTERA_RESERVED_QIS
// synopsys translate_on
`endif
endmodule
// ============================================================
// CNX file retrieval info
// ============================================================
// Retrieval info: PRIVATE: ADDRESSSTALL_A NUMERIC "0"
// Retrieval info: PRIVATE: AclrAddr NUMERIC "0"
// Retrieval info: PRIVATE: AclrByte NUMERIC "0"
// Retrieval info: PRIVATE: AclrData NUMERIC "0"
// Retrieval info: PRIVATE: AclrOutput NUMERIC "0"
// Retrieval info: PRIVATE: BYTE_ENABLE NUMERIC "0"
// Retrieval info: PRIVATE: BYTE_SIZE NUMERIC "8"
// Retrieval info: PRIVATE: BlankMemory NUMERIC "1"
// Retrieval info: PRIVATE: CLOCK_ENABLE_INPUT_A NUMERIC "0"
// Retrieval info: PRIVATE: CLOCK_ENABLE_OUTPUT_A NUMERIC "0"
// Retrieval info: PRIVATE: Clken NUMERIC "0"
// Retrieval info: PRIVATE: DataBusSeparated NUMERIC "1"
// Retrieval info: PRIVATE: IMPLEMENT_IN_LES NUMERIC "0"
// Retrieval info: PRIVATE: INIT_FILE_LAYOUT STRING "PORT_A"
// Retrieval info: PRIVATE: INIT_TO_SIM_X NUMERIC "0"
// Retrieval info: PRIVATE: INTENDED_DEVICE_FAMILY STRING "Cyclone IV E"
// Retrieval info: PRIVATE: JTAG_ENABLED NUMERIC "0"
// Retrieval info: PRIVATE: JTAG_ID STRING "NONE"
// Retrieval info: PRIVATE: MAXIMUM_DEPTH NUMERIC "0"
// Retrieval info: PRIVATE: MIFfilename STRING ""
// Retrieval info: PRIVATE: NUMWORDS_A NUMERIC "256"
// Retrieval info: PRIVATE: RAM_BLOCK_TYPE NUMERIC "2"
// Retrieval info: PRIVATE: READ_DURING_WRITE_MODE_PORT_A NUMERIC "3"
// Retrieval info: PRIVATE: RegAddr NUMERIC "1"
// Retrieval info: PRIVATE: RegData NUMERIC "1"
// Retrieval info: PRIVATE: RegOutput NUMERIC "1"
// Retrieval info: PRIVATE: SYNTH_WRAPPER_GEN_POSTFIX STRING "0"
// Retrieval info: PRIVATE: SingleClock NUMERIC "1"
// Retrieval info: PRIVATE: UseDQRAM NUMERIC "1"
// Retrieval info: PRIVATE: WRCONTROL_ACLR_A NUMERIC "0"
// Retrieval info: PRIVATE: WidthAddr NUMERIC "8"
// Retrieval info: PRIVATE: WidthData NUMERIC "16"
// Retrieval info: PRIVATE: rden NUMERIC "0"
// Retrieval info: LIBRARY: altera_mf altera_mf.altera_mf_components.all
// Retrieval info: CONSTANT: CLOCK_ENABLE_INPUT_A STRING "BYPASS"
// Retrieval info: CONSTANT: CLOCK_ENABLE_OUTPUT_A STRING "BYPASS"
// Retrieval info: CONSTANT: INTENDED_DEVICE_FAMILY STRING "Cyclone IV E"
// Retrieval info: CONSTANT: LPM_HINT STRING "ENABLE_RUNTIME_MOD=NO"
// Retrieval info: CONSTANT: LPM_TYPE STRING "altsyncram"
// Retrieval info: CONSTANT: NUMWORDS_A NUMERIC "256"
// Retrieval info: CONSTANT: OPERATION_MODE STRING "SINGLE_PORT"
// Retrieval info: CONSTANT: OUTDATA_ACLR_A STRING "NONE"
// Retrieval info: CONSTANT: OUTDATA_REG_A STRING "CLOCK0"
// Retrieval info: CONSTANT: POWER_UP_UNINITIALIZED STRING "FALSE"
// Retrieval info: CONSTANT: RAM_BLOCK_TYPE STRING "M9K"
// Retrieval info: CONSTANT: READ_DURING_WRITE_MODE_PORT_A STRING "NEW_DATA_NO_NBE_READ"
// Retrieval info: CONSTANT: WIDTHAD_A NUMERIC "8"
// Retrieval info: CONSTANT: WIDTH_A NUMERIC "16"
// Retrieval info: CONSTANT: WIDTH_BYTEENA_A NUMERIC "1"
// Retrieval info: USED_PORT: address 0 0 8 0 INPUT NODEFVAL "address[7..0]"
// Retrieval info: USED_PORT: clock 0 0 0 0 INPUT VCC "clock"
// Retrieval info: USED_PORT: data 0 0 16 0 INPUT NODEFVAL "data[15..0]"
// Retrieval info: USED_PORT: q 0 0 16 0 OUTPUT NODEFVAL "q[15..0]"
// Retrieval info: USED_PORT: wren 0 0 0 0 INPUT NODEFVAL "wren"
// Retrieval info: CONNECT: @address_a 0 0 8 0 address 0 0 8 0
// Retrieval info: CONNECT: @clock0 0 0 0 0 clock 0 0 0 0
// Retrieval info: CONNECT: @data_a 0 0 16 0 data 0 0 16 0
// Retrieval info: CONNECT: @wren_a 0 0 0 0 wren 0 0 0 0
// Retrieval info: CONNECT: q 0 0 16 0 @q_a 0 0 16 0
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.v TRUE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.inc FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.cmp FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache.bsf FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache_inst.v FALSE
// Retrieval info: GEN_FILE: TYPE_NORMAL cache_bb.v TRUE
// Retrieval info: LIB_FILE: altera_mf