?? freedev_cycloneii_50.v
字號:
cpu_0_data_master_write,
cpu_0_data_master_writedata,
cpu_0_instruction_master_address_to_slave,
cpu_0_instruction_master_read,
data_RAM_s1_readdata,
reset_n,
// outputs:
cpu_0_data_master_granted_data_RAM_s1,
cpu_0_data_master_qualified_request_data_RAM_s1,
cpu_0_data_master_read_data_valid_data_RAM_s1,
cpu_0_data_master_requests_data_RAM_s1,
cpu_0_instruction_master_granted_data_RAM_s1,
cpu_0_instruction_master_qualified_request_data_RAM_s1,
cpu_0_instruction_master_read_data_valid_data_RAM_s1,
cpu_0_instruction_master_requests_data_RAM_s1,
d1_data_RAM_s1_end_xfer,
data_RAM_s1_address,
data_RAM_s1_byteenable,
data_RAM_s1_chipselect,
data_RAM_s1_clken,
data_RAM_s1_readdata_from_sa,
data_RAM_s1_write,
data_RAM_s1_writedata,
registered_cpu_0_data_master_read_data_valid_data_RAM_s1
);
output cpu_0_data_master_granted_data_RAM_s1;
output cpu_0_data_master_qualified_request_data_RAM_s1;
output cpu_0_data_master_read_data_valid_data_RAM_s1;
output cpu_0_data_master_requests_data_RAM_s1;
output cpu_0_instruction_master_granted_data_RAM_s1;
output cpu_0_instruction_master_qualified_request_data_RAM_s1;
output cpu_0_instruction_master_read_data_valid_data_RAM_s1;
output cpu_0_instruction_master_requests_data_RAM_s1;
output d1_data_RAM_s1_end_xfer;
output [ 7: 0] data_RAM_s1_address;
output [ 3: 0] data_RAM_s1_byteenable;
output data_RAM_s1_chipselect;
output data_RAM_s1_clken;
output [ 31: 0] data_RAM_s1_readdata_from_sa;
output data_RAM_s1_write;
output [ 31: 0] data_RAM_s1_writedata;
output registered_cpu_0_data_master_read_data_valid_data_RAM_s1;
input clk;
input [ 27: 0] cpu_0_data_master_address_to_slave;
input [ 3: 0] cpu_0_data_master_byteenable;
input cpu_0_data_master_read;
input cpu_0_data_master_waitrequest;
input cpu_0_data_master_write;
input [ 31: 0] cpu_0_data_master_writedata;
input [ 27: 0] cpu_0_instruction_master_address_to_slave;
input cpu_0_instruction_master_read;
input [ 31: 0] data_RAM_s1_readdata;
input reset_n;
wire cpu_0_data_master_arbiterlock;
wire cpu_0_data_master_continuerequest;
wire cpu_0_data_master_granted_data_RAM_s1;
wire cpu_0_data_master_qualified_request_data_RAM_s1;
wire cpu_0_data_master_read_data_valid_data_RAM_s1;
reg cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register;
wire cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register_in;
wire cpu_0_data_master_requests_data_RAM_s1;
wire cpu_0_data_master_saved_grant_data_RAM_s1;
wire cpu_0_instruction_master_arbiterlock;
wire cpu_0_instruction_master_continuerequest;
wire cpu_0_instruction_master_granted_data_RAM_s1;
wire cpu_0_instruction_master_qualified_request_data_RAM_s1;
wire cpu_0_instruction_master_read_data_valid_data_RAM_s1;
reg cpu_0_instruction_master_read_data_valid_data_RAM_s1_shift_register;
wire cpu_0_instruction_master_read_data_valid_data_RAM_s1_shift_register_in;
wire cpu_0_instruction_master_requests_data_RAM_s1;
wire cpu_0_instruction_master_saved_grant_data_RAM_s1;
reg d1_data_RAM_s1_end_xfer;
reg d1_reasons_to_wait;
wire [ 7: 0] data_RAM_s1_address;
wire data_RAM_s1_allgrants;
wire data_RAM_s1_allow_new_arb_cycle;
wire data_RAM_s1_any_continuerequest;
reg [ 1: 0] data_RAM_s1_arb_addend;
wire data_RAM_s1_arb_counter_enable;
reg [ 1: 0] data_RAM_s1_arb_share_counter;
wire [ 1: 0] data_RAM_s1_arb_share_counter_next_value;
wire [ 1: 0] data_RAM_s1_arb_share_set_values;
wire [ 1: 0] data_RAM_s1_arb_winner;
wire data_RAM_s1_arbitration_holdoff_internal;
wire data_RAM_s1_beginbursttransfer_internal;
wire data_RAM_s1_begins_xfer;
wire [ 3: 0] data_RAM_s1_byteenable;
wire data_RAM_s1_chipselect;
wire [ 3: 0] data_RAM_s1_chosen_master_double_vector;
wire [ 1: 0] data_RAM_s1_chosen_master_rot_left;
wire data_RAM_s1_clken;
wire data_RAM_s1_end_xfer;
wire data_RAM_s1_firsttransfer;
wire [ 1: 0] data_RAM_s1_grant_vector;
wire data_RAM_s1_in_a_read_cycle;
wire data_RAM_s1_in_a_write_cycle;
wire [ 1: 0] data_RAM_s1_master_qreq_vector;
wire [ 31: 0] data_RAM_s1_readdata_from_sa;
reg [ 1: 0] data_RAM_s1_saved_chosen_master_vector;
reg data_RAM_s1_slavearbiterlockenable;
wire data_RAM_s1_waits_for_read;
wire data_RAM_s1_waits_for_write;
wire data_RAM_s1_write;
wire [ 31: 0] data_RAM_s1_writedata;
wire in_a_read_cycle;
wire in_a_write_cycle;
reg last_cycle_cpu_0_data_master_granted_slave_data_RAM_s1;
reg last_cycle_cpu_0_instruction_master_granted_slave_data_RAM_s1;
wire p1_cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register;
wire p1_cpu_0_instruction_master_read_data_valid_data_RAM_s1_shift_register;
wire registered_cpu_0_data_master_read_data_valid_data_RAM_s1;
wire wait_for_data_RAM_s1_counter;
always @(posedge clk or negedge reset_n)
begin
if (reset_n == 0)
d1_reasons_to_wait <= 0;
else if (1)
d1_reasons_to_wait <= ~data_RAM_s1_end_xfer;
end
assign data_RAM_s1_begins_xfer = ~d1_reasons_to_wait & ((cpu_0_data_master_qualified_request_data_RAM_s1 | cpu_0_instruction_master_qualified_request_data_RAM_s1));
assign cpu_0_data_master_requests_data_RAM_s1 = ({cpu_0_data_master_address_to_slave[27 : 10] , 10'b0} == 28'h10000) & (cpu_0_data_master_read | cpu_0_data_master_write);
//assign data_RAM_s1_readdata_from_sa = data_RAM_s1_readdata so that symbol knows where to group signals which may go to master only, which is an e_assign
assign data_RAM_s1_readdata_from_sa = data_RAM_s1_readdata;
//registered rdv signal_name registered_cpu_0_data_master_read_data_valid_data_RAM_s1 assignment, which is an e_assign
assign registered_cpu_0_data_master_read_data_valid_data_RAM_s1 = cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register_in;
//data_RAM_s1_arb_share_counter set values, which is an e_mux
assign data_RAM_s1_arb_share_set_values = 1;
//data_RAM_s1_arb_share_counter_next_value assignment, which is an e_assign
assign data_RAM_s1_arb_share_counter_next_value = data_RAM_s1_firsttransfer ? (data_RAM_s1_arb_share_set_values - 1) : |data_RAM_s1_arb_share_counter ? (data_RAM_s1_arb_share_counter - 1) : 0;
//data_RAM_s1_allgrants all slave grants, which is an e_mux
assign data_RAM_s1_allgrants = |data_RAM_s1_grant_vector |
|data_RAM_s1_grant_vector |
|data_RAM_s1_grant_vector |
|data_RAM_s1_grant_vector;
//data_RAM_s1_end_xfer assignment, which is an e_assign
assign data_RAM_s1_end_xfer = ~(data_RAM_s1_waits_for_read | data_RAM_s1_waits_for_write);
//data_RAM_s1_arb_share_counter arbitration counter enable, which is an e_assign
assign data_RAM_s1_arb_counter_enable = data_RAM_s1_end_xfer & data_RAM_s1_allgrants;
//data_RAM_s1_arb_share_counter counter, which is an e_register
always @(posedge clk or negedge reset_n)
begin
if (reset_n == 0)
data_RAM_s1_arb_share_counter <= 0;
else if (data_RAM_s1_arb_counter_enable)
data_RAM_s1_arb_share_counter <= data_RAM_s1_arb_share_counter_next_value;
end
//data_RAM_s1_slavearbiterlockenable slave enables arbiterlock, which is an e_register
always @(posedge clk or negedge reset_n)
begin
if (reset_n == 0)
data_RAM_s1_slavearbiterlockenable <= 0;
else if (|data_RAM_s1_master_qreq_vector & data_RAM_s1_end_xfer)
data_RAM_s1_slavearbiterlockenable <= |data_RAM_s1_arb_share_counter_next_value;
end
//cpu_0/data_master data_RAM/s1 arbiterlock, which is an e_assign
assign cpu_0_data_master_arbiterlock = data_RAM_s1_slavearbiterlockenable & cpu_0_data_master_continuerequest;
//cpu_0/instruction_master data_RAM/s1 arbiterlock, which is an e_assign
assign cpu_0_instruction_master_arbiterlock = data_RAM_s1_slavearbiterlockenable & cpu_0_instruction_master_continuerequest;
//cpu_0/instruction_master granted data_RAM/s1 last time, which is an e_register
always @(posedge clk or negedge reset_n)
begin
if (reset_n == 0)
last_cycle_cpu_0_instruction_master_granted_slave_data_RAM_s1 <= 0;
else if (1)
last_cycle_cpu_0_instruction_master_granted_slave_data_RAM_s1 <= cpu_0_instruction_master_saved_grant_data_RAM_s1 ? 1 : (data_RAM_s1_arbitration_holdoff_internal | ~cpu_0_instruction_master_requests_data_RAM_s1) ? 0 : last_cycle_cpu_0_instruction_master_granted_slave_data_RAM_s1;
end
//cpu_0_instruction_master_continuerequest continued request, which is an e_mux
assign cpu_0_instruction_master_continuerequest = last_cycle_cpu_0_instruction_master_granted_slave_data_RAM_s1 & cpu_0_instruction_master_requests_data_RAM_s1;
//data_RAM_s1_any_continuerequest at least one master continues requesting, which is an e_mux
assign data_RAM_s1_any_continuerequest = cpu_0_instruction_master_continuerequest |
cpu_0_data_master_continuerequest;
assign cpu_0_data_master_qualified_request_data_RAM_s1 = cpu_0_data_master_requests_data_RAM_s1 & ~((cpu_0_data_master_read & ((|cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register))) | ((~cpu_0_data_master_waitrequest) & cpu_0_data_master_write) | cpu_0_instruction_master_arbiterlock);
//cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register_in mux for readlatency shift register, which is an e_mux
assign cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register_in = cpu_0_data_master_granted_data_RAM_s1 & cpu_0_data_master_read & ~data_RAM_s1_waits_for_read & ~(|cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register);
//shift register p1 cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register in if flush, otherwise shift left, which is an e_mux
assign p1_cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register = {cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register, cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register_in};
//cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register for remembering which master asked for a fixed latency read, which is an e_register
always @(posedge clk or negedge reset_n)
begin
if (reset_n == 0)
cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register <= 0;
else if (1)
cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register <= p1_cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register;
end
//local readdatavalid cpu_0_data_master_read_data_valid_data_RAM_s1, which is an e_mux
assign cpu_0_data_master_read_data_valid_data_RAM_s1 = cpu_0_data_master_read_data_valid_data_RAM_s1_shift_register;
//data_RAM_s1_writedata mux, which is an e_mux
assign data_RAM_s1_writedata = cpu_0_data_master_wr
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