a new orcad demo version 10.0 seems to be available, i haven't gone for the 174 Mbyte download yet but i did look for the limitaions, the big differdnce is that you can now use 20 transistors in the PSpice sims, otherwise the layout still appears crippled with a 10 part limit
LT SwitcherCad looks like its still the spice for me...
the following text was ripped from a pdf, sorry for the lack of formating but i couldn't find the info on orcad's site
OrCAD V10.0 Demo CD limitations
Product Limits in Demo Version
OrCAD Capture " You cannot save designs that have more than
60 parts or 64 nets, including the hierarchical
blocks in the design. You can still view or create
larger designs.
" You cannot have more than 10 parts in the
Capture CIS database.
" You cannot create parts with more than 14 pins.
" You cannot save libraries with more than 15
parts.
" The Capture FPGA flow is not available.
PSpice A/D " Circuit simulation limited to circuits with up to 64
nodes, 20 transistors, two subcircuits or 65
digital primitive devices, and 10 transmission
lines (ideal or non-ideal) with not more than four
pairwise coupled lines.
" Device characterization using the PSpice Model
Editor limited to diodes.
" Stimulus generation limited to sine waves
(analog) and clocks (digital).
" Sample model library named eval.lib (containing
analog and digital parts) and evalp.lib
(containing parameterized parts) are provided.
" You cannot simulate parameterized parts that
are not from the evalp.lib library.
" You cannot use Level 3 of Core model (Tabrizi)
or MOSFET BSIM 3.2 models.
" Displays only simulation data created using the
demo version of the simulator.
OrCAD Layout " You cannot save boards that have more than 10
parts. You can still view larger designs.
" You cannot save boards with more than 100
connections.
" You cannot create footprints with more than 14
pins.
" Sample footprint libraries are provided.
SPECCTRA " You cannot save the results of a route session.
LT SwitcherCad looks like its still the spice for me...
the following text was ripped from a pdf, sorry for the lack of formating but i couldn't find the info on orcad's site
OrCAD V10.0 Demo CD limitations
Product Limits in Demo Version
OrCAD Capture " You cannot save designs that have more than
60 parts or 64 nets, including the hierarchical
blocks in the design. You can still view or create
larger designs.
" You cannot have more than 10 parts in the
Capture CIS database.
" You cannot create parts with more than 14 pins.
" You cannot save libraries with more than 15
parts.
" The Capture FPGA flow is not available.
PSpice A/D " Circuit simulation limited to circuits with up to 64
nodes, 20 transistors, two subcircuits or 65
digital primitive devices, and 10 transmission
lines (ideal or non-ideal) with not more than four
pairwise coupled lines.
" Device characterization using the PSpice Model
Editor limited to diodes.
" Stimulus generation limited to sine waves
(analog) and clocks (digital).
" Sample model library named eval.lib (containing
analog and digital parts) and evalp.lib
(containing parameterized parts) are provided.
" You cannot simulate parameterized parts that
are not from the evalp.lib library.
" You cannot use Level 3 of Core model (Tabrizi)
or MOSFET BSIM 3.2 models.
" Displays only simulation data created using the
demo version of the simulator.
OrCAD Layout " You cannot save boards that have more than 10
parts. You can still view larger designs.
" You cannot save boards with more than 100
connections.
" You cannot create footprints with more than 14
pins.
" Sample footprint libraries are provided.
SPECCTRA " You cannot save the results of a route session.