Casio FZ Samplers

On Thu, 30 Nov 2016, tarkan.sahin78@... [Casio_FZ_Samplers] wrote:


> i want to upgrade my Hohner HS1 with the 4mb RAM upgrade and im 
> wondering if anyone of you did this already? Maybe some illustrated 
> Tutorial or something like that?


In case you're talking about this


 	http://buchty.net/casio/fz1-simm.html


you'd probably be the first. I never got any success feedback so far, 
which either means that noone really tried it or noone trying got it to 
work. (And since my own FZ-1 was FBR by "careful" movers about 15 years 
ago, I never tried it out myself, either.)


> What type of LCD does the Casio use? Is there a way to use a LED 
> replacement?


No. It's a custom LCD controller setup, see


 	http://buchty.net/casio/display.html


for an initial analysis of the protocol.


If that looks familiar to anyone, please let me know. I checked against 
a bunch of Hitachi controllers and it's seemingly its own kind (and 
recycled from the graphical Casio calculators which introduced this 
display setup).


If you want to hook up a contemporary LCD graphics controller, you would 
need to rewrite all LCD control routines from scratch (at least print, 
plot, cls, contrast setting) and get a proper address/data breakout (as 
the existing 6-bit LCD interface is most likely of no use), i.e. hook 
the solution into I/O address space. (I hope you enjoy 80186 assembly 
language :) )


Rainer