Casio CZ/ VZ/ FZ - Pro Series

the external device using the controls had better be
programmed to handle the cz's sofisticated sysex !!!

its just not a single layer of commands embedded in the sysex its a double
layer.

do these controllers have the ability to "encode" and "decode" on a
bite-wise level?

i thgink my cz is great alone and any changes wouldn't make it a cz
anymore..

velocity sensitive is not present , but it does repond to control change 7
main volume

charles


----- Original Message -----
From: "steve_the_composer" <smw-mail@...>
To: <CZsynth@yahoogroups.com>
Sent: Sunday, November 15, 2009 10:57 AM
Subject: [CZsynth] Re: Realtime synth parameters control with faders like
BCF2000 / BCR2000


> PS: Yup, the datasheet is there and MAME does have files to disassemble
uPD7810 based code. (I have no experience with the disassembler, though.)
>
> However, I am still wondering if the CZ architechture allows for realtime
parameter control. I was under the impression that changing values
necessitated retriggering the note.  While I can look at block diagrams and
understand what the designers have done, I lack the ability to analyze the
design enough to know if the note must necessarily be retriggered, of if its
just that way because that's how the OS was written (implying that it can be
changed).
>
> Also, I am wondering if a technique from the VZ envelope would be
helpful--the end level does not have to be zero. Changing that would mean no
need for Q-tips and possibly no need for a 128 stage envelope if the sound
can be altered on the fly.
>
> I really hope all this can be done. A few weeks ago I played some CZ
sounds and CZ music and a number of people were amazed at what the CZ could
do. (And these were non-velocity CZ patches from the CZ-5000!)
>
> Steve
>
>
>
> --- In CZsynth@yahoogroups.com, "narfman96" <narfman96@...> wrote:
> >
> > Joaquim,
> >
> > The main and sub CPU's in the CZ-1 are uPD7810. The datasheet is
available from www.datasheet4u.com and the service manual is in the CZ-1
yahoo group. I can send any of this info you need too. I haven't dumped the
rom code on the CZ-1 eproms yet because they are soldered in.
> >
> > These processors were used in Arcade games along with some synths such
as the Juno-106. There seems to be a mention of a MAME open source compiler
package for this and something about Z180? I'm not a progammer so this all
out of my league.
> >
> > CC control may be a tall order for the CPU to have time for. Myself I
would like to see the envelopes loop. 128 steps for each stage of the
envelope shown in the LCD menu (same as sysex.) Mod Wheel and Aftertouch
control of the filter, and envelopes. Possible velocity rate control of the
envelopes to go along with the levels. The full compliment of waves
available from sysex shown on the display. Etc. Pretty much the same
wishlist carries over to the VZ synths too.
> >
> > Are you the same programmer who worked on JSynthLib?  Fran
> >
> > --- In CZsynth@yahoogroups.com, "-" <jdcx64@> wrote:
> > >
> > > **************************************************
> > > Please give me some documentation help (CPU
docs/assembler/disassembler, a ROM dump of the CZ-1 would be great but I can
get it myself) and I'll make a software patch for the CZ-1 to receive
realtime CC codes for every synth parameter and publicly release it as a few
byte changes to its Eprom firmware, or as a few documented assembly code
lines for the people who want to get more into it.
> > > **************************************************
> > >
> > > The long version:
> > >
> > > This is a discussion that has been repeated several times but although
we have talked about it we have done nothing nothing to fix it yet.
> > >
> > > Like the difference between playing with a stuffed dog and a live one,
synths are a lot more fun if they can edited in realtime with knobs or
faders. That is the only reason I use my JX8P+PG800 a lot more than I use my
CZ-1. The CZ-1, just some software running on a slow 8 bit CPU, sounds more
interesting to me than the JX-8P with its 8 expensive and hard to replace
filter chips, but there's something it can't do: with other synts I use a
cotton swab to keep one key pressed and have incredible fun playing that
single note all night, moving from places like a rave party in an alien
space ship, the insides of the Krakatoa, a bee hive, etc.
> > >
> > > I have a BCF2000 thing (8 good quality motorized faders and 8 encoder
knobs MIDI controller), a bargain for 100USD. Programming it is easy but the
problem with using anything like it with the CZs is that CZs don't accept
individual CC messages for changing most synth parameters. This could be
changed via a software upgrade on a spare 4USD Eprom. If the Eprom is
socketed, replacing it with a new one is something anyone could do in a
couple of minutes, if not, good soldering skills are required but any
experienced repairman could unsolder the chip and solder a socket in its
position for painless upgrades.
> > >
> > > Assembly language / embedded programming is (still) my job and giving
a fix to the CZ software would be only fun for me. I would do it immediately
but I don't have the patience to find the documentation for the CPU in the
CZ and the corresponding assembler / disassembler software. I briefly
searched for them online but I couldn't find them.
> > >
> > > **************************************************
> > > Please give me some documentation help (CPU
docs/assembler/disassembler, a ROM dump of the CZ-1 would be great but I can
get it myself) and I'll make a software patch for the CZ-1 to receive
realtime CC codes for every synth parameter and publicly release it as a few
byte changes to its Eprom firmware, or as a few documented assembly code
lines for the people who want to get more into it.
> > > **************************************************
> > >
> > > Joaquim
> > >
> >
>
>
>
>
> ------------------------------------
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