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Verilog 99%
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Raphael Jacquot ae164feb19 there, serial port works at 115200 
needed to add \r,..
2019-03-04 15:24:05 +01:00
attic implement the basic rom, and add a few things 2019-02-25 09:17:17 +01:00
.gitignore there, a working compile shell script 2019-03-03 14:16:58 +01:00
compile there, a working compile shell script 2019-03-03 14:16:58 +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 add the serial port to the complie 2019-03-04 14:53:48 +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
run.sh attached serial port tentative 2019-03-04 14:40:31 +01:00
saturn_bus.v attached serial port tentative 2019-03-04 14:40:31 +01:00
saturn_bus_controller.v attached serial port tentative 2019-03-04 14:40:31 +01:00
saturn_control_unit.v export rstk_ptr to debugger 2019-03-04 13:28:08 +01:00
saturn_debugger.v there, serial port works at 115200 2019-03-04 15:24:05 +01:00
saturn_def_alu.v export rstk_ptr to debugger 2019-03-04 13:28:08 +01:00
saturn_def_buscmd.v implement more of the bus controller 2019-03-02 13:22:09 +01:00
saturn_def_debugger.v implement push PC to RSTK 2019-03-04 11:52:05 +01:00
saturn_hp48gx_rom.v recognize PC_READ command 2019-03-04 10:15:27 +01:00
saturn_inst_decoder.v export rstk_ptr to debugger 2019-03-04 13:28:08 +01:00
saturn_regs_pc_rstk.v export rstk_ptr to debugger 2019-03-04 13:28:08 +01:00
saturn_serial.v oops, LSB first 2019-03-04 15:15:11 +01:00
saturn_top.v attached serial port tentative 2019-03-04 14:40:31 +01:00
ulx3s_v20.lpf fix the compilation for proper use of clk_25mhz signal as clock 2019-03-03 13:03:36 +01:00
view add an extra script 2019-03-04 13:44:37 +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"