基于or1200最小sopc系统搭建（一）--搭建及仿真（DE2，DE2-70）
做一個or1200的最小系統，or1200+wishbone+ram+gpio，在DE2平臺上實現讀取SW的值然后再LEDR上顯示出來的簡單程序。我將記錄一些主要的步驟。
在opencores上下載源碼or1200-rel1.tar.bz2，wb_conmax_latest.tar.gz， gpio_latest.tar.gz解壓出源碼到 or1200 , wb_conmax , gpio 目錄下。
除此之外，還需要一個onchip-memory和為系統提供時鐘的PLL，用altera的MegaWizard Plug-In Manager工具生成。
Ram的生成參考（原創）Altera 1-port ram 的wishbone slave接口寫法和wishbone master BFM驗證一文，在本文中，用ram0.mif文件初始化（以下會介紹生成方法）。
安達利：http://www.andali.net/
新格：http://www.newsagacity.net/
金牛頭：http://www.gmhose.com/
飛鴿傳書：http://www.freeeim.com/
Pll的配置如下
Inclk0 50M
Clk c0: output clock frequency: 25MHz, Clock phase shift 0.00 ns, Clock duty cycle %:50
為or1200提供時鐘
Clk c1: output clock frequency: 10MHz, Clock phase shift 0.00 ns, Clock duty cycle %:50
生成的目錄結構
/or1200_sopc
????????????? /or1200
????????????? /wb_conmax
????????????? /gpio
????????????? /ram
????????????? /pll
建一個sopc的頂層文件，把上述源碼連接起來，相當一SOPC Builder的所作的工作，現在靠自己動手做了。編寫or1200_sys.v文件
module or1200_sys(
??? input clk_i,
??? input rst_n,
?
??? // buttons
??? input [15:0] SW,
??
??? // segments
??? output [31:0] LEDR
);
?
wire rst = ~rst_n;
?
?????? // **************************************************
?????? // Wires from OR1200 Inst Master to Conmax m0
?????? // **************************************************
?????? wire wire_iwb_ack_i;
?????? wire wire_iwb_cyc_o;
?????? wire wire_iwb_stb_o;
?????? wire [31:0] wire_iwb_data_i;
?????? wire [31:0] wire_iwb_data_o;
?????? wire [31:0] wire_iwb_addr_o;
?????? wire [3:0] wire_iwb_sel_o;
?????? wire wire_iwb_we_o;
?????? wire wire_iwb_err_i;
?????? wire wire_iwb_rty_i;
?????
?????? // **************************************************
?????? // Wires from OR1200 Data Master to Conmax m1
?????? // **************************************************
?????? wire wire_dwb_ack_i;
?????? wire wire_dwb_cyc_o;
?????? wire wire_dwb_stb_o;
?????? wire [31:0] wire_dwb_data_i;
?????? wire [31:0] wire_dwb_data_o;
?????? wire [31:0] wire_dwb_addr_o;
?????? wire [3:0] wire_dwb_sel_o;
?????? wire wire_dwb_we_o;
?????? wire wire_dwb_err_i;
?????? wire wire_dwb_rty_i;
?????
?????? // **************************************************
?????? // Wires from Conmax s0 to onchip_ram0
?????? // **************************************************
?????? wire wire_ram0_ack_o;
?????? wire wire_ram0_cyc_i;
?????? wire wire_ram0_stb_i;
?????? wire [31:0] wire_ram0_data_i;
?????? wire [31:0] wire_ram0_data_o;
?????? wire [31:0] wire_ram0_addr_i;
?????? wire [3:0] wire_ram0_sel_i;
?????? wire wire_ram0_we_i;
?
?????? // **************************************************
?????? // Wires from Conmax s15 to GPIO
?????? // **************************************************
?????? wire wire_gpio_ack_o;
?????? wire wire_gpio_cyc_i;
?????? wire wire_gpio_stb_i;
?????? wire [31:0] wire_gpio_data_i;
?????? wire [31:0] wire_gpio_data_o;
?????? wire [31:0] wire_gpio_addr_i;
?????? wire [3:0] wire_gpio_sel_i;
?????? wire wire_gpio_we_i;
?????? wire wire_gpio_err_o;
?????? wire wire_gpio_interrupt;
?
or1200_top u_or1200(
? // System
? .clk_i(clk_i),
? .rst_i(rst),
? .pic_ints_i({18'b0,wire_gpio_interrupt,wire_uart_interrupt}),
? .clmode_i(2'b00),
?
? // Instruction WISHBONE INTERFACE
? .iwb_clk_i(clk_i),
? .iwb_rst_i(rst),
? .iwb_ack_i(wire_iwb_ack_i),
? .iwb_err_i(wire_iwb_err_i),
? .iwb_rty_i(wire_iwb_rty_i),
? .iwb_dat_i(wire_iwb_data_i),
? .iwb_cyc_o(wire_iwb_cyc_o),
? .iwb_adr_o(wire_iwb_addr_o),
? .iwb_stb_o(wire_iwb_stb_o),
? .iwb_we_o(wire_iwb_we_o),
? .iwb_sel_o(wire_iwb_sel_o),
? .iwb_dat_o(wire_iwb_data_o),
`ifdef OR1200_WB_CAB
? .iwb_cab_o(),
`endif
//`ifdef OR1200_WB_B3
//? iwb_cti_o(),
//? iwb_bte_o(),
//`endif
? // Data WISHBONE INTERFACE
? .dwb_clk_i(clk_i),
? .dwb_rst_i(rst),
? .dwb_ack_i(wire_dwb_ack_i),
? .dwb_err_i(wire_dwb_err_i),
? .dwb_rty_i(wire_dwb_rty_i),
? .dwb_dat_i(wire_dwb_data_i),
? .dwb_cyc_o(wire_dwb_cyc_o),
? .dwb_adr_o(wire_dwb_addr_o),
? .dwb_stb_o(wire_dwb_stb_o),
? .dwb_we_o(wire_dwb_we_o),
? .dwb_sel_o(wire_dwb_sel_o),
? .dwb_dat_o(wire_dwb_data_o),
`ifdef OR1200_WB_CAB
? .dwb_cab_o(),
`endif
//`ifdef OR1200_WB_B3
//? dwb_cti_o(),
//? dwb_bte_o(),
//`endif
?
? // External Debug Interface
? .dbg_stall_i(1'b0),
? .dbg_ewt_i(1'b0),
? .dbg_lss_o(),
? .dbg_is_o(),
? .dbg_wp_o(),
? .dbg_bp_o(),
? .dbg_stb_i(1'b0),
? .dbg_we_i(1'b0),
? .dbg_adr_i(0),
? .dbg_dat_i(0),
? .dbg_dat_o(),
? .dbg_ack_o(),
?
//`ifdef OR1200_BIST
//? // RAM BIST
//? mbist_si_i(),
//? mbist_so_o(),
//? mbist_ctrl_i(),
//`endif
? // Power Management
? .pm_cpustall_i(0),
? .pm_clksd_o(),
? .pm_dc_gate_o(),
? .pm_ic_gate_o(),
? .pm_dmmu_gate_o(),
? .pm_immu_gate_o(),
? .pm_tt_gate_o(),
? .pm_cpu_gate_o(),
? .pm_wakeup_o(),
? .pm_lvolt_o()
);
?
wb_conmax_top u_wb(
? .clk_i(clk_i),
? .rst_i(rst),
?
? // Master 0 Interface
? .m0_data_i(wire_iwb_data_o),
? .m0_data_o(wire_iwb_data_i),
? .m0_addr_i(wire_iwb_addr_o),
? .m0_sel_i(wire_iwb_sel_o),
? .m0_we_i(wire_iwb_we_o),
? .m0_cyc_i(wire_iwb_cyc_o),
? .m0_stb_i(wire_iwb_stb_o),
? .m0_ack_o(wire_iwb_ack_i),
? .m0_err_o(wire_iwb_err_i),
? .m0_rty_o(wire_iwb_rty_i),
//? .m0_cab_i(),
?
? // Master 1 Interface
? .m1_data_i(wire_dwb_data_o),
? .m1_data_o(wire_dwb_data_i),
? .m1_addr_i(wire_dwb_addr_o),
? .m1_sel_i(wire_dwb_sel_o),
? .m1_we_i(wire_dwb_we_o),
? .m1_cyc_i(wire_dwb_cyc_o),
? .m1_stb_i(wire_dwb_stb_o),
? .m1_ack_o(wire_dwb_ack_i),
? .m1_err_o(wire_dwb_err_i),
? .m1_rty_o(wire_dwb_rty_i),
//? .m0_cab_i(),
?
? // Slave 0 Interface
? .s0_data_i(wire_ram0_data_o),
? .s0_data_o(wire_ram0_data_i),
? .s0_addr_o(wire_ram0_addr_i),
? .s0_sel_o(wire_ram0_sel_i),
? .s0_we_o(wire_ram0_we_i),
? .s0_cyc_o(wire_ram0_cyc_i),
? .s0_stb_o(wire_ram0_stb_i),
? .s0_ack_i(wire_ram0_ack_o),
? .s0_err_i(0),
? .s0_rty_i(0),
? //.s0_cab_o(),
?
? // Slave 2 Interface
? .s1_data_i(wire_gpio_data_o),
? .s1_data_o(wire_gpio_data_i),
? .s1_addr_o(wire_gpio_addr_i),
? .s1_sel_o(wire_gpio_sel_i),
? .s1_we_o(wire_gpio_we_i),
? .s1_cyc_o(wire_gpio_cyc_i),
? .s1_stb_o(wire_gpio_stb_i),
? .s1_ack_i(wire_gpio_ack_o),
? .s1_err_i(wire_gpio_err_o),
? .s1_rty_i(0)//,
? //.s1_cab_o(),
? );
?
ram0_top u_ram0(
??? .clk_i(clk_i),
??? .rst_i(rst),
??
??? .wb_stb_i(wire_ram0_stb_i),
??? .wb_cyc_i(wire_ram0_cyc_i),
??? .wb_ack_o(wire_ram0_ack_o),
??? .wb_addr_i(wire_ram0_addr_i),
??? .wb_sel_i(wire_ram0_sel_i),
??? .wb_we_i(wire_ram0_we_i),
??? .wb_data_i(wire_ram0_data_i),
??? .wb_data_o(wire_ram0_data_o)
? );
?
gpio_top u_gpio(
?????? // WISHBONE Interface
?????? .wb_clk_i(clk_i),
?????? .wb_rst_i(rst),
?????? .wb_cyc_i(wire_gpio_cyc_i),
?????? .wb_adr_i(wire_gpio_addr_i),
?????? .wb_dat_i(wire_gpio_data_i),
?????? .wb_sel_i(wire_gpio_sel_i),
?????? .wb_we_i(wire_gpio_we_i),
?????? .wb_stb_i(wire_gpio_stb_i),
?????? .wb_dat_o(wire_gpio_data_o),
?????? .wb_ack_o(wire_gpio_ack_o),
?????? .wb_err_o(wire_gpio_err_o),
?????? .wb_inta_o(wire_gpio_interrupt),
?
//`ifdef GPIO_AUX_IMPLEMENT
//???? // Auxiliary inputs interface
//???? .aux_i(),
//`endif //? GPIO_AUX_IMPLEMENT
?
?????? // External GPIO Interface
?????? .ext_pad_i({16'b0,SW}),
?????? .ext_pad_o(LEDR),
?????? .ext_padoe_o()//,
//`ifdef GPIO_CLKPAD
//? .clk_pad_i()
//`endif
);
?
endmodule
構建頂層模塊or1200_sopc.v
//small sopc with openrisc
//`include "or1200_defines.v"
module or1200_sopc
?????? (
?????????????? ??? Clock Input???????????? ???
?????????????? CLOCK_27,????????????????????????????? //???? On Board 27 MHz
?????????????? CLOCK_50,?????????????????????????????? //????? On Board 50 MHz
?????????????? ??? Push Button????????????
?????????????? KEY,????????????????????????????????????? //????? Pushbutton[3:0]
?????????????? ??? DPDT Switch????????????
?????????????? SW,????????????????????????????????????? //????? Toggle Switch[17:0]
?????????????? ??????? LED????????????
?????????????? LEDR//,????????????????????????????????? //????? LED Red[17:0]
?????? );
?
?
?????? Clock Input????????????
input????????????????? CLOCK_27;?????????????????????? //????? On Board 27 MHz
input????????????????? CLOCK_50;?????????????????????? //????? On Board 50 MHz
?????? Push Button????????????
input? [3:0]?? KEY;??????????????????????????????????? //????? Pushbutton[3:0]
?????? DPDT Switch????????????
input? [17:0]? SW;???????????????????????????????????? //????? Toggle Switch[17:0]
?? LED????????????
output [17:0]? LEDR;???????????????????????????????? //????? LED Red[17:0]
?
wire CPU_RESET;
wire clk_25,clk_10;
?
Reset_Delay??? delay1 (.iRST(KEY[0]),.iCLK(CLOCK_50),.oRESET(CPU_RESET));
cpu_pll pll0 (.inclk0(CLOCK_50),.c0(clk_25),.c1(clk_10));
?
or1200_sys or1200(
??? .clk_i(clk_25),
??? .rst_n(CPU_RESET),
?
??? // buttons
??? .SW(SW[15:0]),
?
??? // segments
??? .LEDR(LEDR[17:0])
);
?
endmodule
?
其中的Reset_Delay模塊如下，產生復位信號。
module? Reset_Delay(iRST,iCLK,oRESET);
input?????????? iCLK;
input?????????? iRST;
output reg????? oRESET;
reg???? [23:0] Cont;
?
always@(posedge iCLK or negedge iRST)
begin
??????? if(!iRST)
??????? begin
??????????????? oRESET? <=????? 1'b0;
??????????????? Cont??? <=????? 24'h0000000;
??????? end
??????? else
??????? begin
??????????????? if(Cont!=24'hFFFFFF)
??????????????? begin
??????????????????????? Cont??? <=????? Cont+1;
??????????????????????? oRESET? <=????? 1'b0;
??????????????? end
??????????????? else
??????????????? oRESET? <=????? 1'b1;
??????? end
end
?
endmodule
?
關于or1200_define的配置，參考工程orpXL所寫。
????? or1200_defines.v:
????????? Line 263: Comment out "`define OR1200_ASIC"
????????? Line 326: Enable comment "`define OR1200_ALTERA_LPM"
????????? Line 577: Comment out "`define OR1200_CLKDIV_2_SUPPORTED"
????? or1200_spram_2048x32.v
????????? Line 591: Comment out "lpm_ram_dq_component.lpm_outdata = "UNREGISTERED","
????? Other files from opencores.org are remained without change.
下面在modelsim中先做仿真。
從C:/altera/90/quartus/eda/sim_lib目錄（參考）下拷貝altera_mf.v和220model.v文件到頂層or1200_sopc目錄下
編寫or1200_sopc_tb.v測試文件
`timescale 1ns/100ps
module or1200_sopc_tb();
?????? reg???? CLOCK_50;
?????? reg???? CLOCK_27;
?????? reg???? [3:0]?? KEY;
?????? reg???? [17:0]? SW;
?????? wire??? [17:0]? LEDR;
?
?
?????? initial begin
?????????????? CLOCK_50 = 1'b0;
?????????????? forever #10 CLOCK_50 = ~CLOCK_50;
?????? end
?????
?????? initial begin
?????????????? KEY[0] = 1'b0;
?????????????? #50 KEY[0]= 1'b1;
?????? end
?????? initial begin
?????????????? SW = 18'h1234;
?????? end
?
?????? or1200_sopc???? or1200_sopc_inst
?????? (
?????????????? ??? Clock Input???????????? ???
?????????????? .CLOCK_27(CLOCK_27),?????????????????????? //????? On Board 27 MHz
?????????????? .CLOCK_50(CLOCK_50),?????????????????????? //????? On Board 50 MHz
?????????????? ??? Push Button????????????
?????????????? .KEY(KEY),???????????????????????????????????? //????? Pushbutton[3:0]
?????????????? ??? DPDT Switch????????????
?????????????? .SW(SW),????????????????????????????????????? //????? Toggle Switch[17:0]
?????????????? ??????? LED????????????
?????????????? .LEDR(LEDR)//,??????????????????????????????? //????? LED Red[17:0]
?????? );
?
endmodule
最終的目錄結構
/or1200_sopc
/or1200
/wb_conmax
/gpio
/ram
/pll
or1200_sopc.v
or1200_sys.v
or1200_sopc_tb.v
Reset_Delay.v
altera_mf.v
220model.v
編寫vlog參數文件vlog.args文件
+libext+.v
-vlog01compat
+acc
-y ./pll
-y ./ram
-y ./or1200
-y ./gpio
-y ./wb_conmax
-v altera_mf.v
-v 220model.v
?
-work ./work
?
//
// Test bench files
//
or1200_sopc_tb.v
//
// RTL files (gpio)
//
+incdir+./gpio
./gpio/gpio_top.v
./gpio/gpio_defines.v
?
//
// RTL files (top)
//
+incdir+../rtl
./or1200_sys.v
./or1200_sopc.v
./pll/cpu_pll.v
./Reset_Delay.v
?
//
// wb_conmax
//
+incdir+./wb_conmax
./wb_conmax/wb_conmax_arb.v
./wb_conmax/wb_conmax_defines.v
./wb_conmax/wb_conmax_master_if.v
./wb_conmax/wb_conmax_msel.v
./wb_conmax/wb_conmax_pri_dec.v
./wb_conmax/wb_conmax_pri_enc.v
./wb_conmax/wb_conmax_rf.v
./wb_conmax/wb_conmax_slave_if.v
./wb_conmax/wb_conmax_top.v
?
//
// RTL files (or1200)
//
+incdir+./or1200
./or1200/or1200_defines.v
./or1200/or1200_iwb_biu.v
./or1200/or1200_wb_biu.v
./or1200/or1200_ctrl.v
./or1200/or1200_cpu.v
./or1200/or1200_rf.v
./or1200/or1200_rfram_generic.v
./or1200/or1200_alu.v
./or1200/or1200_lsu.v
./or1200/or1200_operandmuxes.v
./or1200/or1200_wbmux.v
./or1200/or1200_genpc.v
./or1200/or1200_if.v
./or1200/or1200_freeze.v
./or1200/or1200_sprs.v
./or1200/or1200_top.v
./or1200/or1200_pic.v
./or1200/or1200_pm.v
./or1200/or1200_tt.v
./or1200/or1200_except.v
./or1200/or1200_dc_top.v
./or1200/or1200_dc_fsm.v
./or1200/or1200_reg2mem.v
./or1200/or1200_mem2reg.v
./or1200/or1200_dc_tag.v
./or1200/or1200_dc_ram.v
./or1200/or1200_ic_top.v
./or1200/or1200_ic_fsm.v
./or1200/or1200_ic_tag.v
./or1200/or1200_ic_ram.v
./or1200/or1200_immu_top.v
./or1200/or1200_immu_tlb.v
./or1200/or1200_dmmu_top.v
./or1200/or1200_dmmu_tlb.v
./or1200/or1200_amultp2_32x32.v
./or1200/or1200_gmultp2_32x32.v
./or1200/or1200_cfgr.v
./or1200/or1200_du.v
./or1200/or1200_sb.v
./or1200/or1200_sb_fifo.v
./or1200/or1200_mult_mac.v
./or1200/or1200_qmem_top.v
./or1200/or1200_dpram_32x32.v
./or1200/or1200_spram_2048x32.v
./or1200/or1200_spram_2048x32_bw.v
./or1200/or1200_spram_2048x8.v
./or1200/or1200_spram_512x20.v
./or1200/or1200_spram_256x21.v
./or1200/or1200_spram_1024x8.v
./or1200/or1200_spram_1024x32.v
./or1200/or1200_spram_1024x32_bw.v
./or1200/or1200_spram_64x14.v
./or1200/or1200_spram_64x22.v
./or1200/or1200_spram_64x24.v
./or1200/or1200_xcv_ram32x8d.v
?
//
// Library files
//
//altera_mf.v
編寫.do腳本文件
vlib ./work
vlog -f ./vlog.args
vsim -novopt?? work.or1200_sopc_tb? -pli
add wave -radix hex /*
add wave -radix hex /or1200_sopc_tb/or1200_sopc_inst/or1200/*
run 20000ns
可先編譯硬件vlog直至沒有錯誤。
Model Technology ModelSim ALTERA vlog 6.4a Compiler 2008.08 Oct 22 2008
-- Compiling module or1200_sopc_tb
… …
Top level modules:
????????????? or1200_sopc_tb
????????????? or1200_immu_tlb
????????????? or1200_dmmu_tlb
????????????? or1200_sb_fifo
????????????? or1200_dpram_32x32
????????????? or1200_spram_2048x32_bw
????????????? or1200_spram_2048x8
????????????? or1200_spram_512x20
????????????? or1200_spram_256x21
????????????? or1200_spram_1024x8
????????????? or1200_spram_1024x32
????????????? or1200_spram_1024x32_bw
下面開始配置軟件環境了
首先解決工具鏈問題
參考網頁獲得，本文中采用預先編譯好的工具鏈OpenRISC toolchain including GCC-4.2.2 with uClibc-0.9.29, GDB-6.8 and or1ksim-0.3.0, compiled under Ubuntu x86/i686 (32-bit)
$ wget 解壓
$ tar jxf or32-elf-linux-x86.tar.bz2
解壓會產生一個新的目錄，or32-elf/ 導出文件路徑，把以下這句命令添加到~/.bashrc文件中
export PATH=$PATH:/opt/or32-elf/bin
測試以下，輸入or32-elf-，按兩下tab鍵
$ or32-elf-
or32-elf-addr2line? or32-elf-gcov?????? or32-elf-objdump
or32-elf-ar???????? or32-elf-gdb??????? or32-elf-profile
or32-elf-as???????? or32-elf-gdbtui???? or32-elf-ranlib
or32-elf-c++filt??? or32-elf-gprof????? or32-elf-readelf
or32-elf-cpp??????? or32-elf-ld???????? or32-elf-sim
or32-elf-gcc??????? or32-elf-mprofile?? or32-elf-size
or32-elf-gcc-4.2.2? or32-elf-nm???????? or32-elf-strings
or32-elf-gccbug???? or32-elf-objcopy??? or32-elf-strip
現就可以編寫程序了
構建軟件工程，主要參考代碼demo_or32_sw.zip，orpXL中的代碼，用or1200的匯編工具可最終生成.ihex，.srec等格式的文件，但altera ram初始化時并不支持這種格式。就需要另外的轉換工具，ihex2mif或者srec2mif工具來完成最后的格式轉換。
用gcc編譯ihex2mif.c文件把生成的可執行文件ihex2mif保存到/software文件夾下。
構建的工程目錄
/software
????????????? reset.S
????????????? ram.ld
????????????? Makefile
????????????? gpio_or1200.c
????????????? board.h
????????????? orsocdef.h
????????????? ihex2mif
board.h與orsocdef.h從參考代碼中拷出，并進行裁剪。鏈接文件ram.ld，初始化文件reset.S沒有多大變動。
編寫的gpio_or1200.c文件源碼
#include "orsocdef.h"
#include "board.h"
?
int
main (void)
{
? long gpio_in;
? REG32 (RGPIO_OE) = 0xffffffff;
?
? while(1){
??? gpio_in = REG32 (RGPIO_IN);
??? gpio_in = gpio_in & 0x0000ffff;
??? REG32 (RGPIO_OUT) = gpio_in;
? }
?
? return 0;
}
編寫自己的Makefile文件
ifndef CROSS_COMPILE
CROSS_COMPILE = or32-elf-
endif
CC = $(CROSS_COMPILE)gcc
LD = $(CROSS_COMPILE)ld
NM = $(CROSS_COMPILE)nm
OBJDUMP = $(CROSS_COMPILE)objdump
OBJCOPY = $(CROSS_COMPILE)objcopy
?
INCL??? = board.h orsocdef.h
OBJECTS = reset.o gpio_or1200.o
?
CFLAGS? = -g -c -Wunknown-pragmas -mhard-mul -msoft-div -msoft-float -O2
?
export? CROSS_COMPILE
?
# *****************
# File Dependencies
# *****************
?
gpio_or1200.o??? : $(INCL)
reset.o : board.h
?
# ********************
# Rules of Compilation
# ********************
?
all: gpio_or1200.or32 gpio_or1200.ihex gpio_or1200.srec ram0.mif clean
?
%.o: %.S
??????? @printf "/r/n/t--- Assembling $(<) ---/r/n"
??????? $(CC) $(CFLAGS) $< -o $@
?
%.o: %.c
??????? @printf "/r/n/t--- Compiling $(<) ---/r/n"
??????? $(CC) $(CFLAGS) $< -o $@
?
gpio_or1200.or32: ram.ld $(OBJECTS)
??????? $(LD) -T ram.ld $(OBJECTS) -o $@
??????? $(OBJDUMP) -D $@ > gpio_or1200.dis
?
gpio_or1200.ihex: gpio_or1200.or32
??????? $(OBJCOPY) -O ihex $< $@
gpio_or1200.srec: gpio_or1200.o
??????? $(OBJCOPY) -O ihex $< $@
ram0.mif: gpio_or1200.ihex
??????? ./ihex2mif -f gpio_or1200.ihex -o ram0.mif
clean:
??????? rm -f *.o *.or32 *.ihex *.srec *.dis
接下來執行
$ make all
便會生成ram0.mif文件，拷貝到ram的初始化目錄。
接下來就可以進行仿真了，在dos環境下。
$ vsim –do sim.do
仿真結果（大致能看清吧）
接下來，就用quartusII 建立工程吧。仿真源代碼
?
總結
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