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Siamak Modjtahedi writes:
 > Thanks for the info. I have a few questions:
 > 
 > 1) When I paint m123c and then m4c on top of that, m123c gets erased. Are
 > you saying that there is a modification in techfile to prevent this
 > erasure?

sorry, i guessed had the wrong combo.  here a my macro for connecting
from M1 to M4:

emacro 1 4 "paint m2c; paint m234c"

but it's doubtful you have the 'emacro' command in your non-hacked
magic program, (certainly using the new scheme macros is the better
way to do it), but maybe you can get the idea.  here's some other
examples:

emacro 2 1 "paint m2c"
emacro 1 2 "paint m2c"
emacro 3 1 "paint m123c"
emacro 1 3 "paint m123c"
emacro 4 1 "paint m2c; paint m234c"
emacro 1 4 "paint m2c; paint m234c"
emacro 5 1 "paint m123c; paint m345c"
emacro 1 5 "paint m123c; paint m345c"
emacro 6 1 "paint m2c; paint m234c; paint m456c"
emacro 1 6 "paint m2c; paint m234c; paint m456c"
emacro 7 1 "paint m123c; paint m345c; paint m567c"
emacro 1 7 "paint m123c; paint m345c; paint m567c"

emacro 3 2 "paint m3c"
emacro 2 3 "paint m3c"
emacro 4 2 "paint m234c"
emacro 2 4 "paint m234c"
emacro 5 2 "paint m2c; paint m345c"
emacro 2 5 "paint m2c; paint m345c"
emacro 5 2 "paint m234c; paint m456c"
emacro 2 5 "paint m234c; paint m456c"
emacro 6 2 "paint m2c; paint m234c; paint m456c"
emacro 2 6 "paint m2c; paint m234c; paint m456c"
emacro 7 2 "paint m2c; paint m345c; paint m567c"
emacro 2 7 "paint m2c; paint m345c; paint m567c"

emacro 4 3 "paint m4c"
emacro 3 4 "paint m4c"
emacro 5 3 "paint m345c"
emacro 3 5 "paint m345c"
emacro 6 3 "paint m3c; paint m456c"
emacro 3 6 "paint m3c; paint m456c"
emacro 7 3 "paint m345c; paint m567c"
emacro 3 7 "paint m345c; paint m567c"

emacro 5 4 "paint m5c"
emacro 4 5 "paint m5c"
emacro 6 4 "paint m456c"
emacro 4 6 "paint m456c"
emacro 7 4 "paint m4c; paint m567c"
emacro 4 7 "paint m4c; paint m567c"

emacro 6 5 "paint m6c"
emacro 5 6 "paint m6c"
emacro 7 5 "paint m567c"
emacro 5 7 "paint m567c"

emacro 7 6 "paint m7c"
emacro 6 7 "paint m7c"

the trick is that the "middle" layer of each contact in the stacking
of contacts not collide.


 > 2) I am not sure how macros can be used to make long stacked contacts. Are
 > you saying that there are certain combinations of stacked vias that
 > connect all the way up, yet do not erase each other? If so, how can I find
 > out what these combinations are?

the combo's (and the trick) should be listed in some table in the
README, FAQ, INTRO, and/or CHANGELOG file

 ftp://ftp.isi.edu/pub/sondeen/magic/new/README
...
 ftp://ftp.isi.edu/pub/sondeen/magic/new/beta/CHANGELOG

/jeff

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