Mail Archives: geda-user/2017/07/20/16:30:11
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> On Jul 20, 2017, at 12:42 PM, Nicklas Karlsson =
(nicklas DOT karlsson17 AT gmail DOT com) [via geda-user AT delorie DOT com] =
<geda-user AT delorie DOT com> wrote:
>=20
>>> xschem:
>>> VHDL / Verilog / Spice netlist, ready for simulation
>>> Behavioral VHDL / Verilog code can be embedded as one of the =
properties of the schematic block
>>>=20
>>>=20
>>> These xschem abilities will be good goals to include in cschem.
>>=20
>>=20
>> We already have these for SPICE in gEDA and Lepton if you use the =
gnet-spice-noqsi back end (https://github.com/noqsi/gnet-spice-noqsi =
<https://github.com/noqsi/gnet-spice-noqsi>) for gnetlist. I believe =
both Lepton and Roland=E2=80=99s gnetlist replacement now give the back =
end writer enough support to do Verilog and VHDL right. So, we don=E2=80=99=
t need a new tool, just a couple of new back ends.
>=20
> Yes, I never had any problem to express any circuit in gschem. There =
are a few things missing but not many.
>=20
> Then it come to available libraries and backends the story is a little =
bit different. Predefined attributes should ideally be part of the =
backend. Online design rule check would be possible if backend is a =
plugin. I heard something about documentation layer in pcb-rnd useful to =
feedback data generated externally.
You=E2=80=99re talking about personalities for gschem? Vladimir has put =
in a lot of work to make this possible in Lepton. But note that it=E2=80=99=
s tricky in practice. I have a project that exports to three different =
layout programs and also to SPICE. The netlister only has to pay =
attention to one at a time, but the schematics need attributes for all =
three.
>=20
>>=20
>> John Doty Noqsi Aerospace, Ltd.
>> http://www.noqsi.com/
>> jpd AT noqsi DOT com
>=20
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 Jul 20, 2017, at 12:42 PM, Nicklas Karlsson (<a =
href=3D"mailto:nicklas DOT karlsson17 AT gmail DOT com" =
class=3D"">nicklas DOT karlsson17 AT gmail 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""><blockquote type=3D"cite" class=3D""><blockquote type=3D"cite" =
class=3D"">xschem:<br class=3D"">VHDL / Verilog / Spice netlist, ready =
for simulation<br class=3D"">Behavioral VHDL / Verilog code can be =
embedded as one of the properties of the schematic block<br class=3D""><br=
class=3D""><br class=3D"">These xschem abilities will be good goals to =
include in cschem.<br class=3D""></blockquote><br class=3D""><br =
class=3D"">We already have these for SPICE in gEDA and Lepton if you use =
the gnet-spice-noqsi back end (<a =
href=3D"https://github.com/noqsi/gnet-spice-noqsi" =
class=3D"">https://github.com/noqsi/gnet-spice-noqsi</a> <<a =
href=3D"https://github.com/noqsi/gnet-spice-noqsi" =
class=3D"">https://github.com/noqsi/gnet-spice-noqsi</a>>) for =
gnetlist. I believe both Lepton and Roland=E2=80=99s gnetlist =
replacement now give the back end writer enough support to do Verilog =
and VHDL right. So, we don=E2=80=99t need a new tool, just a couple of =
new back ends.<br class=3D""></blockquote><br class=3D"">Yes, I never =
had any problem to express any circuit in gschem. There are a few things =
missing but not many.<br class=3D""><br class=3D"">Then it come to =
available libraries and backends the story is a little bit different. =
Predefined attributes should ideally be part of the backend. Online =
design rule check would be possible if backend is a plugin. I heard =
something about documentation layer in pcb-rnd useful to feedback data =
generated externally.<br class=3D""></div></div></blockquote><div><br =
class=3D""></div>You=E2=80=99re talking about personalities for gschem? =
Vladimir has put in a lot of work to make this possible in Lepton. But =
note that it=E2=80=99s tricky in practice. I have a project that exports =
to three different layout programs and also to SPICE. The netlister only =
has to pay attention to one at a time, but the schematics need =
attributes for all three.</div><div><br class=3D""><blockquote =
type=3D"cite" class=3D""><div class=3D""><div class=3D""><br =
class=3D""><blockquote type=3D"cite" class=3D""><br class=3D"">John Doty =
&n=
bsp;Noqsi Aerospace, Ltd.<br class=3D""><a href=3D"http://www.noqsi.com/" =
class=3D"">http://www.noqsi.com/</a><br class=3D"">jpd AT noqsi DOT com<br =
class=3D""></blockquote><br class=3D""></div></div></blockquote></div><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""></body></html>=
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