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Verilog 99%
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Makefile 0.2%
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Raphaël Jacquot 2fcd9f7b23 decode our first instruction 
execute said instruction
start implementing the debugging engine to see what we are doing
2019-03-02 19:40:31 +01:00
attic implement the basic rom, and add a few things 2019-02-25 09:17:17 +01:00
.gitignore implement the basic rom, and add a few things 2019-02-25 09:17:17 +01:00
compile add testing for yosys out status 2019-02-12 14:50:13 +01:00
empty_lfe5u-85f.config fix some verilator warnings 2019-02-04 20:36:47 +01:00
gen_rom_hex.py add licence info 2019-02-06 10:40:55 +01:00
ico implement more things, test with ice40 2019-02-10 12:04:53 +01:00
icoboard.pcf implement more things, test with ice40 2019-02-10 12:04:53 +01:00
make_saturn.ESP5.ys starts complete rewrite 2019-02-24 23:30:57 +01:00
make_saturn.ICE40.ys starts complete rewrite 2019-02-24 23:30:57 +01:00
Makefile implement ST=[01] n 2019-02-04 17:00:08 +01:00
README.md update readme 2019-03-02 17:06:23 +01:00
rom-gx-r.hex change the way the rom is encoded, makes things easier 2019-02-04 11:31:58 +01:00
run.sh enough was done to start feeding the decoder 2019-03-02 15:52:56 +01:00
saturn_bus.v implement the basic rom, and add a few things 2019-02-25 09:17:17 +01:00
saturn_bus_controller.v decode our first instruction 2019-03-02 19:40:31 +01:00
saturn_control_unit.v decode our first instruction 2019-03-02 19:40:31 +01:00
saturn_debugger.v decode our first instruction 2019-03-02 19:40:31 +01:00
saturn_def_alu.v decode our first instruction 2019-03-02 19:40:31 +01:00
saturn_def_buscmd.v implement more of the bus controller 2019-03-02 13:22:09 +01:00
saturn_hp48gx_rom.v implement the basic rom, and add a few things 2019-02-25 09:17:17 +01:00
saturn_inst_decoder.v decode our first instruction 2019-03-02 19:40:31 +01:00
saturn_top.v add some commenting 2019-03-02 15:01:00 +01:00
ulx3s_v20.lpf commit more stuff 2019-02-04 17:14:08 +01:00
z_test_rom-1.hex time to start over, this this is broken beyond fiddling 2019-02-24 21:54:15 +01:00
z_test_rom-2.hex time to start over, this this is broken beyond fiddling 2019-02-24 21:54:15 +01:00

README.md

Verilog implementation of the HP saturn processor

licence: GPLv3 or later

timings:

           ___________   
reset:                |____________________________________________________
                ____      ____      ____      ____      ____      ____
clk :      ____|    |____|    |____|    |____|    |____|    |____|    |____
                          _________ _________ _________ _________ _________
counter:   ______________/____0____X____1____X____2____X____3____X____0____
                          _________                               _________
phase_0:   ______________|         |_____________________________|
                                    _________
phase_1:   ________________________|         |_____________________________
                                              _________
phase_2:   __________________________________|         |___________________
                                                        _________
phase_3:   ____________________________________________|         |_________

notes for using the ULX3S

Maybe linux ujprog won't find port because of insufficient priviledge. Either run ujprog as root or have udev rule:# this is for usb-serial tty device SUBSYSTEM=="tty", ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015",
MODE="664", GROUP="dialout" this is for ujprog libusb access

ATTRS{idVendor}=="0403", ATTRS{idProduct}=="6015",
GROUP="dialout", MODE="666"