__float128 is a gnu extension delivering true 128 bit floating point
support. Currently not supported by clang. In addition, the quadmath
library needs to be linked. For the time being therefore disabled.
Renamed cast member of the constants struct to magic to clearly identify
magic numbers.
Introduced nlconst struct inheriting from plib::constants<nl_fptype> to
make code better understandable.
The newly added RELTOL and VNTOL parameters implement Newton convergence
checks comparable following other SPICE implementations.
The ACCURACY solver parameter now is only used for convergence checks in
iterative solvers.
In addition, type safety was significantly improved and a lot of "magic"
numbers are identifiable now.
Now that `direct_read_data` has been replaced with `memory_access_cache`, which is better equipped to deal with dynamic banking, there should be all the more reason to put an end to this pernicious antipattern.
- Added new solver parameter FPTYPE. This determines in which floating
point domain the linear system is solved. May be one of "FLOAT",
"DOUBLE" or "LONGDOUBLE"
- Added option "--fperr" to nltool. This enables floating point
exceptions. This helps debugging the code under gdb.
The purpose of this going forward is to have more choice in
optimization. Non-dynamic systems should be just fine in the float
domain. Dynamic systems (i.e. diodes, bjts, mosfets) should in general
work with double. Certain edge cases may require long double resolution.
* new NOT WORKING machines
---
Air-Blaster Joystick (AB1500, PAL) [David Haywood, Morten Kirkegaard, Peter Wilhelmsen]
boots, 2d games can be played, although speed probably not correct. 3d sections don't work properly at all. dump is pending 2nd verification, but I think the issues are emulation issues (missing timers etc.)
* notes (nw)
* irq notes (nw)
--------------------
RS-232 DCE-DCE Bridge
(nw) This is a simple machine for wiring together two things that want
to plug into an RS-232 port. This means that for DCE-like things (e.g.
serial printers) there's no need to create an extra machine to allow
them to talk to the outside world with the null_modem device. (Also
added some asserts, removed a FIXME, and put the swtpc8212 terminal in
the default RS-232 devices.)
----------------------------------
Eeekk! [Craig Anstett, Andrew Welburn]
(This new parent set runs on Epos's original Tristar 8000 hardware; the previously dumped set has been tagged as the Pac-Man conversion it is.)
Added ability to compile using float instead of double. Specifically the
the solver as well as the infrastructure now can have their own floating
point type. Currently this is only an academic exercise since
numerically demanding circuits like kidniki only work with double/double
support. Using float here is pushing numerical stability over the
limits.
The long term design goal is too have the matrix type (double/float)
being a parameter.
- solver: align matrix population along the various solvers
- solver: delete dead code
- renamed nl_double to nl_fptype and use nl_fptype where previously
double has been used.
- renamed param_double_t to param_fp_t
