Il 10/04/2013 18:27, Christian Gauger-Cosgrove ha scritto:
I have a few quick questions about what could be added to SIMH. Not
that I could add the features, my skills at C are not quite excellent,
so in general, I wouldn't really be able to add anything to the
project... or it would be better to say, I wouldn't be able to add
anything remotely competently.
Any way on to the questions! How difficult, and better to ask, how
possible would it be to add the following to SIMH at some point in the
future?
My wishlist is already known (and debated & criticized) but basically
what I suggest is:
- a skeleton emulation, having an "empty" (that is, w/o opcodes) CPU.h
and the basic terminal interface; currently one needs to apply Occam's
razor to the smallest emulators's sources (currently 8080 Altair and
LGP) with the risk of inadvertently removing functions actually needed
(happened to me more than once...)
-a better, up-to date documentation, both user's and developer's
-looking into means to interfacing to console/grh library (implementing
a curses.h interface can allow emulation of non-TTY consoles, esp. those
non-80x25, as some earlier S-100 TV/CRT cards have)
-a blinkenlighten interface !!! and also, adding binary input/output to
EX and DE commands should be useful in dealing with emulation of big irons
-on graphic interface, a vector2raster routine (read: PDP1 Spacewar ;) )
-perhaps isn't a bad idea implementing a discrete logic emulation, or at
least provisions/hooks for implementing this (similiar to what MAME are
doing for emulating some earlier arcade machine's sound)
- a minor thing, renaming AltairZ80 in S100 (Herr Schorn's work is now
much more than an Altair emulation, capable potentially of emulating a
bewildering array of S100 cards & machines)
Personally, I'm looking conceptually on means of emulating unit record
equipment and on how to implement their "programming"; provisionally,
I'm estimating that their cabled "control panel" can be "emulated" with
a sort of description language, like a circuit simulator. (This can
enable the emulation of some early computers based on a combination of
stored program and cabled control panels)
SIMH has as strong point an unique flexibility, and the emulation can be
carefully configured set prior of booting the emulation proper (I can
have around even an half-dozen or more of configuration scripts for SIMH
emulators...) and some of my suggestion are more or less linked to this
forte
hope to have done a clear wishlist worth of being debated, and
Best regards from Italy,
dott. Piergiorgio.
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