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yamaha dx7ii fd internal character set

 

im still using my trusty atari and have written a dx7 voice editor ..anyone can save me some time and point me to a description of the dx7 character set?? ?its not completely compatible with ascii.?
but i am only permitted to use character value 0-127?? ?
charles
 

not sure but this might be it?

The sysex format won't let you send values greater than 127.

Op za 22 mrt 2025 om 22:48 schreef charles via <charles.copp=[email protected]>:

im still using my trusty atari and have written a dx7 voice editor ..anyone can save me some time and point me to a description of the dx7 character set?? ?its not completely compatible with ascii.?
but i am only permitted to use character value 0-127?? ?
charles
 
Edited

ok so i went right to work after my first post to correspond values dx<->atari?

this is my finding?
?
left column is 7bit# sent to dx?
right column is description of character displayed on dx screen.
?
0=freq symbol? 'f'?
1=time symbol 't'
2-7=? four stacked horizontal line?
8=f again!
9=t again??
10-31 blank? = space?
32-91 exactly same as atari ascii character set
92= something resembling power line beacon ???? yen?
93-125 exactly same as atari ascii character set
126=arrow right
127=arrow left
?
?
so the only real world correlation would be:
if your dx names are in capital letters then they were made with a dx7 software voice editor.
?
my dx7iifd does not permit me to enter capital letters unless using a software editor......???
 

In the software I created for my Yamaha synths I limit my characters to the 32-127 range. That's what I did in my Atari projects, and today in my Python projects on newer computers.

groeten,
Martin


-------- Oorspronkelijk bericht --------
Onderwerp: [YamahaDX] yamaha dx7ii fd internal character set
Van: "charles via groups.io"
Aan: [email protected]
Cc:


im still using my trusty atari and have written a dx7 voice editor ..anyone can save me some time and point me to a description of the dx7 character set?? ?its not completely compatible with ascii.?
but i am only permitted to use character value 0-127?? ?
charles
 

ok sounds like good advice.....
?
i was actually hoping there would be some hidden characters in the dx to use ,however no none, except the yen symbol...and couple arrows? ? lol

this is bit off topic but? i had no clue this guy passed away
im still trying to find alot of his atari software and code
?
https://www.soundonsound.com/news/martin-russ-obituary?
 

Well, that depends on the CGROM font table in the LCD and how consistent Yamaha was over the years with their specs and procurement. There are certainly characters above 127, but they are an order-able character set from the LCD vendor (or more correctly the HD44780 vendor which is probably Hitachi or other Japanese).

Download the Hitachi data book that has the HD44780 and/or HD44780A (or even the HD44780U LCD-II)? in it. That's your starting point.

GB

On 3/23/2025 8:40 AM, charles via groups.io wrote:
ok sounds like good advice.....
i was actually hoping there would be some hidden characters in the dx to use ,however no none, except the yen symbol...and couple arrows? ? lol

this is bit off topic but? i had no clue this guy passed away
im still trying to find alot of his atari software and code

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