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Add some flops to the mapper

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This is NOT how to do CDC
This commit is contained in:
Byron Lathi
2023-11-30 17:40:21 -08:00
parent db4848b6fe
commit e805b19eca
4 changed files with 109 additions and 90 deletions
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15
hw/efinix_fpga/constraints/super6502.pt.sdc
View File

@@ -11,11 +11,18 @@
# PLL Constraints
#################
create_clock -period 5.0000 i_sdrclk
create_clock -period 5.0000 i_tACclk
create_clock -period 10.0000 i_sysclk
create_clock -period 20.0000 clk_50
create_clock -period 500.0000 clk_2
create_generated_clock -source clk_50 -multiply_by 4 i_sdrclk
create_generated_clock -source clk_50 -multiply_by 4 i_tACclk
create_generated_clock -source clk_50 -multiply_by 2 i_sysclk
create_generated_clock -source clk_50 -divide_by 25 clk_cpu
# create_clock -period 5.0000 i_sdrclk
# create_clock -period 5.0000 i_tACclk
# create_clock -period 10.0000 i_sysclk
# create_clock -period 500.0000 clk_cpu
# GPIO Constraints
####################

11
hw/efinix_fpga/src/mapper.sv
View File

@@ -1,6 +1,8 @@
module mapper(
input i_reset,
input i_clk,
input i_clk50,
input i_clk100,
input i_cs,
input i_we,
input [7:0] i_data,
@@ -10,6 +12,7 @@ module mapper(
);
logic [15:0] mm [16];
logic [15:0] _mm [16];
logic [15:0] mm_next [16];
logic [31:0] we;
@@ -20,13 +23,14 @@ logic [15:0] mm_sel;
logic [15:0] selected_mm;
logic [15:0] _cpu_addr;
always_comb begin
we = ((i_we & i_cs) << i_cpu_addr[4:0]);
mm_sel = (1 << i_cpu_addr[4:1]);
o_data = mm_sel[8*i_cpu_addr[0] +: 8];
selected_mm = mm[i_cpu_addr[15:12]];
o_mapped_addr = {selected_mm[12:0], i_cpu_addr[11:0]};
for (int i = 0; i < 16; i++) begin
@@ -40,6 +44,11 @@ always_comb begin
end
end
always_ff @(posedge i_clk100) begin
_cpu_addr <= i_cpu_addr;
selected_mm <= mm[_cpu_addr[15:12]];
end
always_ff @(negedge i_clk or posedge i_reset) begin
if (i_reset) begin
for (int i = 0; i < 16; i++) begin

2
hw/efinix_fpga/src/super6502.sv
View File

@@ -202,6 +202,8 @@ timer u_timer(
mapper u_mapper(
.i_reset(~cpu_resb),
.i_clk(clk_cpu),
.i_clk50(clk_50),
.i_clk100(i_sysclk),
.i_cs(w_mapper_cs),
.i_we(~cpu_rwb),
.i_data(cpu_data_in),

169
hw/efinix_fpga/super6502.xml
View File

@@ -1,107 +1,108 @@
<efx:project xmlns:efx="http://www.efinixinc.com/enf_proj" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" name="super6502" description="" last_change_date="Fri Nov 24 2023 17:49:43" location="/home/byron/ServerProjects/super6502/hw/efinix_fpga" sw_version="2023.1.150" last_run_state="pass" last_run_tool="efx_pgm" last_run_flow="bitstream" config_result_in_sync="sync" design_ood="sync" place_ood="sync" route_ood="sync" xsi:schemaLocation="http://www.efinixinc.com/enf_proj enf_proj.xsd">
<?xml version="1.0" encoding="UTF-8"?>
<efx:project name="super6502" description="" last_change_date="Thu November 30 2023 17:33:58" location="/home/byron/Projects/super6502/hw/efinix_fpga" sw_version="2023.1.150" last_run_state="pass" last_run_tool="efx_pgm" last_run_flow="bitstream" config_result_in_sync="sync" design_ood="sync" place_ood="sync" route_ood="sync" xmlns:efx="http://www.efinixinc.com/enf_proj" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.efinixinc.com/enf_proj enf_proj.xsd">
<efx:device_info>
<efx:family name="Trion" />
<efx:device name="T20F256" />
<efx:timing_model name="C4" />
<efx:family name="Trion"/>
<efx:device name="T20F256"/>
<efx:timing_model name="C4"/>
</efx:device_info>
<efx:design_info def_veri_version="sv_09" def_vhdl_version="vhdl_2008">
<efx:top_module name="super6502" />
<efx:design_file name="src/super6502.sv" version="default" library="default" />
<efx:design_file name="src/leds.sv" version="default" library="default" />
<efx:design_file name="src/sdram_adapter.sv" version="default" library="default" />
<efx:design_file name="src/timer.sv" version="default" library="default" />
<efx:design_file name="src/interrupt_controller.sv" version="default" library="default" />
<efx:design_file name="src/multiplier.sv" version="default" library="default" />
<efx:design_file name="src/divider_wrapper.sv" version="default" library="default" />
<efx:design_file name="src/uart_wrapper.sv" version="default" library="default" />
<efx:design_file name="src/sd_controller.sv" version="default" library="default" />
<efx:design_file name="src/crc7.sv" version="default" library="default" />
<efx:design_file name="src/rom.sv" version="default" library="default" />
<efx:design_file name="src/spi_controller.sv" version="default" library="default" />
<efx:design_file name="src/mapper.sv" version="default" library="default" />
<efx:design_file name="src/byte_sel_register.sv" version="default" library="default" />
<efx:design_file name="src/rtc.sv" version="default" library="default" />
<efx:top_vhdl_arch name="" />
<efx:top_module name="super6502"/>
<efx:design_file name="src/super6502.sv" version="default" library="default"/>
<efx:design_file name="src/leds.sv" version="default" library="default"/>
<efx:design_file name="src/sdram_adapter.sv" version="default" library="default"/>
<efx:design_file name="src/timer.sv" version="default" library="default"/>
<efx:design_file name="src/interrupt_controller.sv" version="default" library="default"/>
<efx:design_file name="src/multiplier.sv" version="default" library="default"/>
<efx:design_file name="src/divider_wrapper.sv" version="default" library="default"/>
<efx:design_file name="src/uart_wrapper.sv" version="default" library="default"/>
<efx:design_file name="src/sd_controller.sv" version="default" library="default"/>
<efx:design_file name="src/crc7.sv" version="default" library="default"/>
<efx:design_file name="src/rom.sv" version="default" library="default"/>
<efx:design_file name="src/spi_controller.sv" version="default" library="default"/>
<efx:design_file name="src/mapper.sv" version="default" library="default"/>
<efx:design_file name="src/byte_sel_register.sv" version="default" library="default"/>
<efx:design_file name="src/rtc.sv" version="default" library="default"/>
<efx:top_vhdl_arch name=""/>
</efx:design_info>
<efx:constraint_info>
<efx:sdc_file name="constraints/super6502.pt.sdc" />
<efx:inter_file name="" />
<efx:sdc_file name="constraints/super6502.pt.sdc"/>
<efx:inter_file name=""/>
</efx:constraint_info>
<efx:sim_info />
<efx:misc_info />
<efx:sim_info/>
<efx:misc_info/>
<efx:ip_info>
<efx:ip instance_name="sdram_controller" path="ip/sdram_controller/settings.json">
<efx:ip_src_file name="sdram_controller.v" />
<efx:ip_src_file name="sdram_controller.v"/>
</efx:ip>
<efx:ip instance_name="divider" path="ip/divider/settings.json">
<efx:ip_src_file name="divider.v" />
<efx:ip_src_file name="divider.v"/>
</efx:ip>
<efx:ip instance_name="uart" path="ip/uart/settings.json">
<efx:ip_src_file name="uart.v" />
<efx:ip_src_file name="uart.v"/>
</efx:ip>
</efx:ip_info>
<efx:synthesis tool_name="efx_map">
<efx:param name="work_dir" value="work_syn" value_type="e_string" />
<efx:param name="write_efx_verilog" value="on" value_type="e_bool" />
<efx:param name="mode" value="speed" value_type="e_option" />
<efx:param name="max_ram" value="-1" value_type="e_integer" />
<efx:param name="max_mult" value="-1" value_type="e_integer" />
<efx:param name="infer-clk-enable" value="3" value_type="e_option" />
<efx:param name="infer-sync-set-reset" value="1" value_type="e_option" />
<efx:param name="fanout-limit" value="0" value_type="e_integer" />
<efx:param name="bram_output_regs_packing" value="1" value_type="e_option" />
<efx:param name="retiming" value="1" value_type="e_option" />
<efx:param name="seq_opt" value="1" value_type="e_option" />
<efx:param name="blast_const_operand_adders" value="1" value_type="e_option" />
<efx:param name="operator-sharing" value="0" value_type="e_option" />
<efx:param name="optimize-adder-tree" value="0" value_type="e_option" />
<efx:param name="mult_input_regs_packing" value="1" value_type="e_option" />
<efx:param name="mult_output_regs_packing" value="1" value_type="e_option" />
<efx:param name="min-sr-fanout" value="0" value_type="e_option" />
<efx:param name="seq-opt-sync-only" value="0" value_type="e_option" />
<efx:param name="blackbox-error" value="1" value_type="e_option" />
<efx:param name="allow-const-ram-index" value="0" value_type="e_option" />
<efx:param name="hdl-compile-unit" value="1" value_type="e_option" />
<efx:param name="create-onehot-fsms" value="0" value_type="e_option" />
<efx:param name="min-ce-fanout" value="0" value_type="e_integer" />
<efx:param name="mult-decomp-retime" value="0" value_type="e_option" />
<efx:param name="optimize-zero-init-rom" value="1" value_type="e_option" />
<efx:param name="include" value="ip/sdram_controller" value_type="e_string" />
<efx:param name="include" value="ip/divider" value_type="e_string" />
<efx:param name="include" value="ip/uart" value_type="e_string" />
<efx:param name="work_dir" value="work_syn" value_type="e_string"/>
<efx:param name="write_efx_verilog" value="on" value_type="e_bool"/>
<efx:param name="mode" value="speed" value_type="e_option"/>
<efx:param name="max_ram" value="-1" value_type="e_integer"/>
<efx:param name="max_mult" value="-1" value_type="e_integer"/>
<efx:param name="infer-clk-enable" value="3" value_type="e_option"/>
<efx:param name="infer-sync-set-reset" value="1" value_type="e_option"/>
<efx:param name="fanout-limit" value="0" value_type="e_integer"/>
<efx:param name="bram_output_regs_packing" value="1" value_type="e_option"/>
<efx:param name="retiming" value="1" value_type="e_option"/>
<efx:param name="seq_opt" value="1" value_type="e_option"/>
<efx:param name="blast_const_operand_adders" value="1" value_type="e_option"/>
<efx:param name="operator-sharing" value="0" value_type="e_option"/>
<efx:param name="optimize-adder-tree" value="0" value_type="e_option"/>
<efx:param name="mult_input_regs_packing" value="1" value_type="e_option"/>
<efx:param name="mult_output_regs_packing" value="1" value_type="e_option"/>
<efx:param name="min-sr-fanout" value="0" value_type="e_option"/>
<efx:param name="seq-opt-sync-only" value="0" value_type="e_option"/>
<efx:param name="blackbox-error" value="1" value_type="e_option"/>
<efx:param name="allow-const-ram-index" value="0" value_type="e_option"/>
<efx:param name="hdl-compile-unit" value="1" value_type="e_option"/>
<efx:param name="create-onehot-fsms" value="0" value_type="e_option"/>
<efx:param name="min-ce-fanout" value="0" value_type="e_integer"/>
<efx:param name="mult-decomp-retime" value="0" value_type="e_option"/>
<efx:param name="optimize-zero-init-rom" value="1" value_type="e_option"/>
<efx:param name="include" value="ip/sdram_controller" value_type="e_string"/>
<efx:param name="include" value="ip/divider" value_type="e_string"/>
<efx:param name="include" value="ip/uart" value_type="e_string"/>
</efx:synthesis>
<efx:place_and_route tool_name="efx_pnr">
<efx:param name="work_dir" value="work_pnr" value_type="e_string" />
<efx:param name="verbose" value="off" value_type="e_bool" />
<efx:param name="load_delaym" value="on" value_type="e_bool" />
<efx:param name="optimization_level" value="NULL" value_type="e_option" />
<efx:param name="seed" value="1" value_type="e_integer" />
<efx:param name="placer_effort_level" value="2" value_type="e_option" />
<efx:param name="max_threads" value="-1" value_type="e_integer" />
<efx:param name="work_dir" value="work_pnr" value_type="e_string"/>
<efx:param name="verbose" value="off" value_type="e_bool"/>
<efx:param name="load_delaym" value="on" value_type="e_bool"/>
<efx:param name="optimization_level" value="NULL" value_type="e_option"/>
<efx:param name="seed" value="1" value_type="e_integer"/>
<efx:param name="placer_effort_level" value="2" value_type="e_option"/>
<efx:param name="max_threads" value="-1" value_type="e_integer"/>
</efx:place_and_route>
<efx:bitstream_generation tool_name="efx_pgm">
<efx:param name="mode" value="active" value_type="e_option" />
<efx:param name="width" value="1" value_type="e_option" />
<efx:param name="enable_roms" value="smart" value_type="e_option" />
<efx:param name="spi_low_power_mode" value="on" value_type="e_bool" />
<efx:param name="io_weak_pullup" value="on" value_type="e_bool" />
<efx:param name="oscillator_clock_divider" value="DIV8" value_type="e_option" />
<efx:param name="bitstream_compression" value="off" value_type="e_bool" />
<efx:param name="enable_external_master_clock" value="off" value_type="e_bool" />
<efx:param name="active_capture_clk_edge" value="posedge" value_type="e_option" />
<efx:param name="jtag_usercode" value="0xFFFFFFFF" value_type="e_string" />
<efx:param name="release_tri_then_reset" value="on" value_type="e_bool" />
<efx:param name="cold_boot" value="off" value_type="e_bool" />
<efx:param name="cascade" value="off" value_type="e_option" />
<efx:param name="generate_bit" value="on" value_type="e_bool" />
<efx:param name="generate_bitbin" value="off" value_type="e_bool" />
<efx:param name="generate_hex" value="on" value_type="e_bool" />
<efx:param name="generate_hexbin" value="off" value_type="e_bool" />
<efx:param name="four_byte_addressing" value="off" value_type="e_bool" />
<efx:param name="mode" value="active" value_type="e_option"/>
<efx:param name="width" value="1" value_type="e_option"/>
<efx:param name="enable_roms" value="smart" value_type="e_option"/>
<efx:param name="spi_low_power_mode" value="on" value_type="e_bool"/>
<efx:param name="io_weak_pullup" value="on" value_type="e_bool"/>
<efx:param name="oscillator_clock_divider" value="DIV8" value_type="e_option"/>
<efx:param name="bitstream_compression" value="off" value_type="e_bool"/>
<efx:param name="enable_external_master_clock" value="off" value_type="e_bool"/>
<efx:param name="active_capture_clk_edge" value="posedge" value_type="e_option"/>
<efx:param name="jtag_usercode" value="0xFFFFFFFF" value_type="e_string"/>
<efx:param name="release_tri_then_reset" value="on" value_type="e_bool"/>
<efx:param name="cold_boot" value="off" value_type="e_bool"/>
<efx:param name="cascade" value="off" value_type="e_option"/>
<efx:param name="generate_bit" value="on" value_type="e_bool"/>
<efx:param name="generate_bitbin" value="off" value_type="e_bool"/>
<efx:param name="generate_hex" value="on" value_type="e_bool"/>
<efx:param name="generate_hexbin" value="off" value_type="e_bool"/>
<efx:param name="four_byte_addressing" value="off" value_type="e_bool"/>
</efx:bitstream_generation>
<efx:debugger>
<efx:param name="work_dir" value="work_dbg" value_type="e_string" />
<efx:param name="auto_instantiation" value="off" value_type="e_bool" />
<efx:param name="profile" value="debug_profile.wizard.json" value_type="e_string" />
<efx:param name="work_dir" value="work_dbg" value_type="e_string"/>
<efx:param name="auto_instantiation" value="off" value_type="e_bool"/>
<efx:param name="profile" value="debug_profile.wizard.json" value_type="e_string"/>
</efx:debugger>
</efx:project>