the layers drawn are controlled by the layer visibility

you'll need to zoom in to see them as fully zoomed out they are too dense and we skip them

@Tim Edwards does magic have a way to show routing tracks?

ie the P&R flow

Sorry I'm no magic expert but Tim Edwards is the maintainer

Using

grid

also has the benefit that you can do

snap grid

and automatically snap instances to the tracks, although normally you wouldn't be doing that manually. But if you were trying, for example, to align a handful of standard cells in an analog layout, it would work well.

@Tim Edwards It seems to work. I was drawing the tracks based on the minimum metal-1 length (

0.14um

) for the vertical tracks and the minimum metal-2 length (

0.14um

too) for the horizontal tracks. Then I started drawing line by line trying to match them to the grid (just to make sure the space between lines) and found that to place one line element in

0.28um

with respect to other, I had to put a distance of

28

between them, so there was a ratio of

0.01um

per

1

for the line elements:

element add line track_1 0 0 364 0
element add line track_2 0 28 364 28

I wanted to add an image of the drawing but after saving the file and opening it again, the lines disappeared, don't know why (?) 2) After this issue, I thought to automate the process writing a tcl script with the grid pattern, so I wrote this:

#!/usr/bin/tclsh

openwrapper
tech load sky130A.tech


# vertical tracks
element add line tm1_vcc black 0 0 364 0
element add line tm1_1 black 0 28 364 28
element add line tm1_2 black 0 56 364 56
element add line tm1_3 black 0 84 364 84
element add line tm1_4 black 0 112 364 112
element add line tm1_5 black 0 140 364 140
element add line tm1_6 black 0 168 364 168
element add line tm1_7 black 0 196 364 196
element add line tm1_8 black 0 224 364 224
element add line tm1_9 black 0 252 364 252
element add line tm1_10 black 0 280 364 280
element add line tm1_11 black 0 308 364 308
element add line tm1_12 black 0 336 364 336
element add line tm1_vdd black 0 364 364 364

# horizontal tracks
element add line tm2_left black 0 0 0 364
element add line tm2_1 black 28 0 28 364
element add line tm2_2 black 56 0 56 364
element add line tm2_3 black 84 0 84 364
element add line tm2_4 black 112 0 112 364
element add line tm2_5 black 140 0 140 364
element add line tm2_6 black 168 0 168 364
element add line tm2_7 black 196 0 196 364
element add line tm2_8 black 224 0 224 364
element add line tm2_9 black 252 0 252 364
element add line tm2_10 black 280 0 280 364
element add line tm2_11 black 308 0 308 364
element add line tm2_12 black 336 0 336 364
element add line tm2_vdd black 364 0 364 364

But when I run it doing

magic script.tcl

two windows are opening, one of them empty and the other without the layers left-hand side panel. Could you please point me out the errors?

Also if you use

-rcfile /path/to/sky130A.magicrc

then the internal units are subdivided which will make the values equal to

0.005um

per

1

. I have fixed the issue in magic and pushed to opencircuitdesign.com (not yet mirrored to github) so that subsequent versions of magic will just take real-valued units for the element measurements. For the version you have now, you'll have to put up with internal units that can change with grid scaling.

Actually I did code in a method to save elements to a file and read them back. It has not been very well tested. Is there a section

<< elements >>

in the saved .mag file?

Ok @Tim Edwards I deleted the bin and lib files before compiling the newest version of magic and run

magic -d OGL -rcfile /path/to/sky130A.magicrc script.tcl

and it works [fig 1] in my case

script.tcl

is called

cell12t_template.tcl

but, is it normal that the right-hand side panel appears in that way, with all boxes colored in black? And you're right, because I used the

rcfile

, the ratio is now

0.005um

per

1

which is the half I had previously, and that's why my tracks are now spaced

0.14um

and not

0.28um

[fig 2] Finally, I saved a

test.mag

file to check if there was a

<< elements >>

section in the .mag file, but no [Fig 3]

@Nelson Rodriguez: And I obviously don't use this function much, because I've forgotten how it works. After every

element add line <name>

command, issue a 2nd command

element configure <name> flags persistent

, and it will get saved to the .mag file.