Mail Archives: geda-user/2018/03/23/17:22:05
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> On Mar 23, 2018, at 4:30 PM, Girvin Herr (gherrl AT fastmail DOT com) [via =
geda-user AT delorie DOT com] <geda-user AT delorie DOT com> wrote:
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> Greetings,
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> Yes, I know this is old technology, but I have a project which I =
intend to use wire-wrap technology to make a test breadboard. I tried =
the existing gnetlist backends to see if one is already there, but there =
is not. All of them produce a variation of:
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> netname node1 node2 node3 node4...
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> What I am looking for is:
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> netname node1 node2, node3 node4, node2 node3...
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> This is a wire chain where node1 to node2 and node3 to node4 are on =
the first (lower) level, and node2 to node3 is on the second (upper) =
level.
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> Does anyone have such a backend or can point me to one?
I don=E2=80=99t think there is one. In general, we expect the layout =
tool to handle such geometric refinement of a schematic topology.
You could, of course, write something. Exporting a more conventional =
netlist is easy: my OsmonfdPCB back end code is much shorter than its =
GPL boilerplate. If you don=E2=80=99t like Scheme, Xorn is supposed to =
let you use other languages (but I=E2=80=99ve never figured that out).
Ordering the segments seems a variant of the =E2=80=9Ctraveling salesman =
problem=E2=80=9D.
John Doty Noqsi Aerospace, Ltd.
http://www.noqsi.com/
jpd AT noqsi DOT com
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<html><head><meta http-equiv=3D"Content-Type" content=3D"text/html =
charset=3Dutf-8"></head><body style=3D"word-wrap: break-word; =
-webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" =
class=3D""><br class=3D""><div><blockquote type=3D"cite" class=3D""><div =
class=3D"">On Mar 23, 2018, at 4:30 PM, Girvin Herr (<a =
href=3D"mailto:gherrl AT fastmail DOT com" class=3D"">gherrl AT fastmail DOT com</a>) =
[via <a href=3D"mailto:geda-user AT delorie DOT com" =
class=3D"">geda-user AT delorie DOT com</a>] <<a =
href=3D"mailto:geda-user AT delorie DOT com" =
class=3D"">geda-user AT delorie DOT com</a>> wrote:</div><br =
class=3D"Apple-interchange-newline"><div class=3D""><div =
class=3D"">Greetings,<br class=3D""><br class=3D"">Yes, I know this is =
old technology, but I have a project which I intend to use wire-wrap =
technology to make a test breadboard. I tried the existing gnetlist =
backends to see if one is already there, but there is not. All of them =
produce a variation of:<br class=3D""><br class=3D"">netname node1 node2 =
node3 node4...<br class=3D""><br class=3D"">What I am looking for is:<br =
class=3D""><br class=3D"">netname node1 node2, node3 node4, node2 =
node3...<br class=3D""><br class=3D"">This is a wire chain where node1 =
to node2 and node3 to node4 are on the first (lower) level, and node2 to =
node3 is on the second (upper) level.<br class=3D""><br class=3D"">Does =
anyone have such a backend or can point me to one?<br =
class=3D""></div></div></blockquote></div><div class=3D""><br =
class=3D""></div>I don=E2=80=99t think there is one. In general, we =
expect the layout tool to handle such geometric refinement of a =
schematic topology.<div class=3D""><br class=3D""></div><div =
class=3D"">You could, of course, write something. Exporting a more =
conventional netlist is easy: my OsmonfdPCB back end code is much =
shorter than its GPL boilerplate. If you don=E2=80=99t like Scheme, Xorn =
is supposed to let you use other languages (but I=E2=80=99ve never =
figured that out).</div><div class=3D""><br class=3D""></div><div =
class=3D"">Ordering the segments seems a variant of the =E2=80=9Ctraveling=
salesman problem=E2=80=9D.</div><div class=3D""><br class=3D""><div =
class=3D"">
<span class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><span =
class=3D"Apple-style-span" style=3D"border-collapse: separate; =
border-spacing: 0px 0px; color: rgb(0, 0, 0); font-family: Helvetica; =
font-size: 12px; font-style: normal; font-variant: normal; font-weight: =
normal; letter-spacing: normal; line-height: normal; text-align: auto; =
-khtml-text-decorations-in-effect: none; text-indent: 0px; =
-apple-text-size-adjust: auto; text-transform: none; orphans: 2; =
white-space: normal; widows: 2; word-spacing: 0px; "><p style=3D"margin: =
0.0px 0.0px 0.0px 0.0px" class=3D""><font face=3D"Helvetica" size=3D"3" =
style=3D"font: 12.0px Helvetica" class=3D"">John Doty<span =
class=3D"Apple-converted-space"> <span =
class=3D"Apple-converted-space"> </span><span =
class=3D"Apple-converted-tab"> <span =
class=3D"Apple-converted-space"> </span></span></span>Noqsi =
Aerospace, Ltd.</font></p><p style=3D"margin: 0.0px 0.0px 0.0px 0.0px" =
class=3D""><a href=3D"http://www.noqsi.com/" =
class=3D"">http://www.noqsi.com/</a></p><p style=3D"margin: 0.0px 0.0px =
0.0px 0.0px" class=3D""><font face=3D"Helvetica" size=3D"3" style=3D"font:=
12.0px Helvetica" class=3D""><a href=3D"mailto:jpd AT noqsi DOT com" =
class=3D"">jpd AT noqsi DOT com</a></font></p><br =
class=3D"Apple-interchange-newline"></span></span>
</div>
<br class=3D""></div></body></html>=
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