JP1 Remotes

Is your Replay Panasonic MIX for HT upgrade about specific gear?
https://www.hifi-remote.com/forums/dload ... le_id=2785
If no, stop reading. Otherwise,
1. Could you tell what model?
2. Do unassigned subdevice 18 functions work the gear if you chose to use'm?
3. Any idea whether this DC-style protocol could take in 7 subdevices (that's what I see some HT models need), or do people have to use a 30 byte larger DC protocol for 7?

ElizabethD wrote:Is your Replay Panasonic MIX for HT upgrade about specific gear?
https://www.hifi-remote.com/forums/dload ... le_id=2785
If no, stop reading. Otherwise,
1. Could you tell what model?
2. Do unassigned subdevice 18 functions work the gear if you chose to use'm?
3. Any idea whether this DC-style protocol could take in 7 subdevices (that's what I see some HT models need), or do people have to use a 30 byte larger DC protocol for 7?

I have no Panasonic gear. I was just working with files the poster said he was trying to adapt, so the answers to 1 and 2 are

BUT, the answer to 3 (based upon my observation of the two protocols in question and how they work in KM and using the very good protocol help therein) is:

For a single device number upgrade, the Panasonic Combo (or Combo 2) protocols allow the upgrade to have an unlimited number of subdevices mixed in, as the actual subdevice number gets entered on the functions worksheet.

For a MULTIPLE device number upgrade, the Panasonic Combo protocols can't deal with it, and your only choice is the Panasonic MIX Combo. Here you are limited to a total of 6 device/subdevice numbers. The way I read it, it can any combination of 1 Device + 5 subdevices to 5 Devices + 1 subdevice, or any combination in between.

So if you have MULTIPLE device numbers, AND the total number of unique device + subdevice numbers exceeds 6, you have to make a decision what device(s) and/or subdevice(s) to exclude from your upgrade, or use multiple upgrades - otherwise, one of the two protocols should accomodate your needs.

So back to question 3: If you have a SINGLE device number, the Panasonic Combo (or Combo2) protocol CAN INDEED handle 7 subdevices, whilst the Panasonic MIX Combo CANNOT. If you have TWO or MORE device numbers, NEITHER of those Panny protocols can handle that combination of devices and 7 subdevices.

Capn Trips wrote:I have no Panasonic gear. I was just working with files the poster said he was trying to adapt, so the answers to 1 and 2 are

How sad
If you ever find out what model, I'd like to know.

Re #3: I didn't think you could cram in more into MIX, but with jp1, impossible has been done, so I figured it was worth asking even though my reading of the KM instructions is the same as yours. Thanks for the answer. For what it's worth, here is my take on construction of these upgrades, all based on the stuff I learned here, hopefully correctly:

General background: Panasonic makes a variety of audio units - some have VCR built in, some have DVD, some have both, most have neither. In case of the mixed-device boxes, you have VCR 144.0, 144.1, 144.5, DVD 176.0 , and then the main 160 with usually 4, but up to 7 (so far ) subdevices (of which two might be Tape and CD). There are also some old boom-box type units around using main device 9 and 12 and Panasonic(old) protocol, and they do not have subdevices at all.

Building upgrades: If someone wanted to code the whole thing in one upgrade, 8-11 combinations might be needed, no room in MIX, so you'd need DC. But, in my opinion, that's impractical (unless you already use or need it for something else). Let VCR and DVD have their own device upgrades on VCR and DVD buttons, and leave the rest for the main RCVR or AUD button. Main device 160 can run under Panasonic Combo which is a smaller upgrade than the somewhat limiting MIX job with it's larger protocol.

Panasonic Combo2 always has to go into IR, as far as I know. Panasonic Combo (zero or 37 bytes) is a much smaller protocol than Panasonic Combo2 (67 bytes). Rob or Mark once explained that Combo is broken in many remotes, my 8910 included, so in those cases, RM and KM are smart enough to tell you to push the 37 bytes of corrected code into IR.