On 02/12/04 10:05, mikehifi said...
if the
ccf that these programs create doesn't contain
a certain code (such as discreet code for component
video input) does that mean the manufacturer didn't
write that function into the program for the device?
that it doesn't exist?
That's usually a hard question and the answer often depends on the brand. Examples:
Sony (as Lyndel mentioned) often scatters funtions around to different device numbers and sometimes has discrete codes on little used device numbers, so scanning all OBCs for all device/subdevice numbers from any learned signals isn't enough to find all the discretes.
Panasonic usually puts a few obscure functions in a different subdevice number from the rest of the functions. With 256 functions per subdevice, and multiple device modes (affecting whether a given function has visible effect) an effective search is nearly impossible. So very few non obvious discretes have been found, but that doesn't tell us whether they exist.
Marantz usually puts the discrete functions in an RC5x signal related to the RC5 toggle signal (so searching all OBCs of the RC5 device would miss all the discretes, but knowing Marantz's general pattern makes finding their discretes pretty easy).
RCA puts most discretes on a different device number than the main set of functions, but they only have 16 device numbers and they use OBCs very consistently, so their discretes are easy to find.
By contrast, many brands such as Toshiba seem to put everything together on one device number, so the set of possible commands is easy to search (but most Toshiba devices have no discretes).
