an eight RiSC SCM VHDL code, is a good reference value.

freerisc8_11
............\Makefile
............\readme.txt
............\Verilog
............\.......\alu.v
............\.......\basic.asm
............\.......\BASIC.HEX
............\.......\basic.rom
............\.......\cpu.v
............\.......\dds.asm
............\.......\DDS.HEX
............\.......\dds.rom
............\.......\dram.v
............\.......\exp.v
............\.......\hex2v
............\.......\hex2v.c
............\.......\idec.v
............\.......\pram.v
............\.......\regs.v
............\.......\runit
............\.......\sindata.c
............\.......\sindata.hex
............\.......\test.v
............\VHDL
............\....\ramlib_quartus.vhd
............\....\ramlib_sim.vhd
............\....\ramlib_xil.vhd
............\www
............\...\freerisc8_legal.htm
............\...\images
............\...\index.htm

............\...\risc8a_small.gif
............\...\risc8_manual.htm
............\...\_borders
............\...\........\bottom.htm
............\...\........\_vti_cnf
............\...\........\........\bottom.htm
............\...\_derived
............\...\........\freerisc8_legal.htm_cmp_expeditn110_bnr.gif
............\...\........\freerisc8_legal.htm_cmp_expeditn110_hbtn.gif
............\...\........\freerisc8_legal.htm_cmp_expeditn110_hbtn_a.gif
............\...\........\freerisc8_legal.htm_cmp_expeditn110_vbtn.gif
............\...\........\freerisc8_legal.htm_cmp_expeditn110_vbtn_a.gif



............\...\........\index.htm_cmp_expeditn110_bnr.gif
............\...\........\index.htm_cmp_expeditn110_hbtn.gif
............\...\........\index.htm_cmp_expeditn110_hbtn_a.gif
............\...\........\risc8_manual.htm_cmp_expeditn110_bnr.gif
............\...\........\risc8_manual.htm_cmp_expeditn110_hbtn.gif
............\...\........\risc8_manual.htm_cmp_expeditn110_hbtn_a.gif
............\...\........\_vti_cnf
............\...\........\........\freerisc8_legal.htm_cmp_expeditn110_bnr.gif
............\...\........\........\freerisc8_legal.htm_cmp_expeditn110_hbtn.gif
............\...\........\........\freerisc8_legal.htm_cmp_expeditn110_hbtn_a.gif
............\...\........\........\freerisc8_legal.htm_cmp_expeditn110_vbtn.gif
............\...\........\........\freerisc8_legal.htm_cmp_expeditn110_vbtn_a.gif
............\...\........\........\home_cmp_expeditn110_hbtn.gif
............\...\........\........\home_cmp_expeditn110_hbtn_a.gif
............\...\........\........\home_cmp_expeditn110_hbtn_p.gif
............\...\........\........\index.htm_cmp_expeditn110_bnr.gif
............\...\........\........\index.htm_cmp_expeditn110_hbtn.gif
............\...\........\........\index.htm_cmp_expeditn110_hbtn_a.gif
............\...\........\........\risc8_manual.htm_cmp_expeditn110_bnr.gif
............\...\........\........\risc8_manual.htm_cmp_expeditn110_hbtn.gif
............\...\........\........\risc8_manual.htm_cmp_expeditn110_hbtn_a.gif
............\...\_fpclass
............\...\_overlay
............\...\........\freerisc8_legal.htm_nav_expeditn010_bnr.gif
............\...\........\freerisc8_legal.htm_nav_expeditn010_hbtn.gif
............\...\........\home_nav_expeditn010_hbtn.gif
............\...\........\index.htm_nav_expeditn010_bnr.gif
............\...\........\risc8_manual.htm_nav_expeditn010_bnr.gif
............\...\........\risc8_manual.htm_nav_expeditn010_hbtn.gif
............\...\........\_vti_cnf
............\...\........\........\freerisc8_legal.htm_nav_expeditn010_bnr.gif
............\...\........\........\freerisc8_legal.htm_nav_expeditn010_hbtn.gif
............\...\........\........\home_nav_expeditn010_hbtn.gif
............\...\........\........\index.htm_nav_expeditn010_bnr.gif
............\...\........\........\index.htm_nav_expeditn010_hbtn.gif
............\...\........\........\risc8_manual.htm_nav_expeditn010_bnr.gif
............\...\........\........\risc8_manual.htm_nav_expeditn010_hbtn.gif
............\...\_private
............\...\_themes
............\...\.......\expeditn
............\...\.......\........\color0.css
............\...\.......\........\color1.css
...

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