Both XOR and Magic(DRC, locally) has been running for 4-5hrs now... No meaningful outputs at this point.

Beginner / getting started questions: 1. I installed openlane and ran the regression test. I got 31 PASSes and 11 FAILS. Is that normal? 2. I'm really unfamiliar with Docker 😞 I'd like to try out magic, yosys and klayout (not as part of a flow). How do I start magic for example (without installing it separately)? (I tried make mount and then magic but it complains that DISPLAY isn't set, and so on. I tried ./flow.tcl -interactive -d mydesign and then run_magic but it says it can't read ::env(PDK)... and so on. Basically, I don't know how to specify a magic.rc file, nor the technology 😞

It looks like caravel is using sram_1rw1r_32_256_8_sky130, which is an openRAM macro, correct? There's rtl verilog in the caravel/verilog/rtl directory, but I couldn't find the gate level verilog (was expecting it to be in caravel/verilog/gl). Does the gate level verilog exist for sram_1rw1r_32_256_8_sky130, and if it does, how do I get it?

Hi everyone, any news on chipathon 2023 chips ?

Hi all. Does anyone know what is the maximum current supported on the analogue pads on sky130?

@Stefan Schippers: I am looking for a way to plot a 2-dimensional sweep in xschem (without resorting to an external tool like octave to generate the plots). I know of two ways to get the data for a 2D sweep, but I can only get ngspice to produce a meaningful plot for one of those methods, and I can't get xschem to produce a meaningful plot for either one. Example with sweep over voltage and temperature for a transistor characteristic:

.control
save all
set temp=27
dc VDD 0 1 0.01
write BG3_ZTC_1v8_lvt_X.raw
reset
set temp=100
dc VDD 0 1 0.01
set appendwrite
write BG3_ZTC_1v8_lvt_X.raw
* plot dc1.i(VID1) dc2.i(VID1)
.endc

With the above control block, the plot command (uncommented) works, and reading back the raw file and issuing the same plot command works. However, an attempt to do the plot in xschem just produces an error complaining that the raw file cannot be read, with the message

Xschem requires all datasets to be saved with identical and same number of variables
There is a mismatch, so this and following datasets will not be read
Raw file data read: /home/tim/.xschem/simulations/BG3_ZTC_1v8_lvt_X.raw
points=101, vars=8, datasets=1 sim_type=dc

(xschem schematic attached) The other method would be to let ngspice do the 2D sweep:

dc TEMP 27 100 73 VDD 0 1 0.01

When I do that, all the correct data is in the raw file, but it's all in one vector and I can't figure out how to get the plot to separate the two variables. Is there a known solution to this problem? I'm guessing that there is one involving the

set curplot

command. Managing plots in ngspice doesn't seem to be terribly well documented. . .

Is there a way to force magic to regenerate a pcell from the original param ? I somehow edited it, I have no idea how, but I want to reset it to whatever would have been auto-generated.

what's the minimal combination of built-in steps that can give me somewhat reasonable GDS with a verilog model as input? Is this a good list? I got it from here and was wondering why clock tree synthesis is not on there

Magic is extracting

sky130_fd_pr__pnp_05v5_W0p68L0p68

as

sky130_fd_pr__rf_pnp_05v5_W0p68L0p68

causing LVS to fail when using netgen. If I remove the 'rf_' manually from the Magic-extracted netlist, LVS passes. Anybody seeing the same issue with bipolars?

How does one go about finding the Avth (threshold mismatch) of the devices in this PDK? I am currently trying to calculate threshold voltage mismatch (Av / WL) for a simple flash ADC design that uses strongARM comparators.