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Mirror of https://github.com/sxpert/hp-saturn
272 commits 1 branch 0 tags 2 MiB
Verilog 99%
Shell 0.7%
Makefile 0.2%
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Raphael Jacquot a1b22269b2 add mmio 
fix rtn instructions
decode block 14x
2019-03-14 22:20:03 +01:00
attic implement the basic rom, and add a few things 2019-02-25 09:17:17 +01:00
.gitignore fix gitignore 2019-03-14 13:22:15 +01:00
check.sh add script to run verilator 2019-03-14 13:32:50 +01:00
compile.sh change compile script to optimize for 50Mhz 2019-03-14 18:05:31 +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 mmio 2019-03-14 22:20:03 +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 remove useless crud about the ULX3S 2019-03-14 16:39:20 +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 add mmio 2019-03-14 22:20:03 +01:00
saturn_alu_module.v first verilator error fixes 2019-03-14 13:33:07 +01:00
saturn_bus.v add mmio 2019-03-14 22:20:03 +01:00
saturn_bus_controller.v cleanup the startup procedure 2019-03-14 17:52:03 +01:00
saturn_control_unit.v implement the ALU as it should be 2019-03-14 21:47:05 +01:00
saturn_debugger.v cleanup the startup procedure 2019-03-14 17:52:03 +01:00
saturn_def_alu.v add mmio 2019-03-14 22:20:03 +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 D0=(5) 2019-03-05 06:14:38 +01:00
saturn_hp48gx_mmio.v add mmio 2019-03-14 22:20:03 +01:00
saturn_hp48gx_rom.v pipelining of reading from rom 2019-03-14 14:33:28 +01:00
saturn_inst_decoder.v add mmio 2019-03-14 22:20:03 +01:00
saturn_regs_pc_rstk.v add mmio 2019-03-14 22:20:03 +01:00
saturn_serial.v ok. serial sort of works, except it doesn't... 2019-03-04 18:29:00 +01:00
saturn_top.v print a "." when the bus is active, but not reading 2019-03-05 06:47:02 +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:   ____________________________________________|         |_________