JP1 Remotes

3FG · Expert Joined: 19 May 2009 Posts: 3367

Improved RDF for 31793179 RCA RCRP05B
Revised version.

1) In IR and RMIR, it is possible to generate a new remote image without first downloading from an actual remote. With the released version of 31793179 (RCA RCRP05B black), the new image does not work when uploaded into the remote. The culprit is memory location $22 ($622) which should be set to $0F. Other values give a variety of bizarre behaviors, summarized below. I've added an entry in [Settings] so that a new image will have $22 set to $0F. This is visible on the General tab as an entry labeled Byte22 with a value of 15. In RMIR, the value is not user editable on the General tab by design, but is editable in the Raw tab. IR.exe seems to ignore the StartReadOnlySettings directive and so the value is editable in both tabs.

2) The remote is capable of sending the Power signal for Cable and TV modes whenever the respective device button is pressed. This is manually programmed with the 972 command, and location $1B stores the information. At reset, $1B contains $0C, and if sending the Power signal is enabled, $1B instead contains $1C. I've aded an entry into [Settings] to allow this to be user selectable on the General tab. There is also an entry labeled Byte1B which sets the less significant nibble to $0C. Editability is similar to 1) above.

The 972 command accepts Ch+ to turn on the sending Power feature (2 blinks), and CH- to turn it off (4 blinks)

$22 values and behaviors (quite possibly incomplete or just plain wrong.)
In general, device buttons and Setup always respond with a blink. In the description below "all" means all buttons except Devices and Setup. I haven't checked to see if actual IR signals are sent, except for $0F.

0F: Normal
1F, 2F, 9F, AF, BF: Channel group buttons are sent to Cbl device; all others don't respond.
3F, 4F, 5F, DF, EF: No buttons respond.
6F: Any Channel group button press results in alternately the CBL or TV LED lighting; all others don't respond.
7F: The DVD device lights, regardless of selected device mode, for Ch group; all others don't respond.
FF: Ch group is sent to TV; all others don't respond.

The released RDF sets $22 to $FF, which is why I've tried to improve the RDF.

xnappo · Expert Joined: 30 Dec 2003 Posts: 861

3FG · Expert Joined: 19 May 2009 Posts: 3367

31793179 RCRP05B: Added Setup code locks in [Settings]. These are at $1A-- the same location as the 15-133/134/135 remotes.

Individual locks can be Set/Cleared by tapping the device button before issuing a 982 command, which is typically referred to as a Cable Lock command, but actually works for all devices.

Daniel_Eble · Joined: 28 Jun 2005 Posts: 10

The 12 bytes from $3D to $48 appear to store the result of setup command 985 (cable device multiplexor). The format is one byte for the button code and two bytes for the setup code, repeated four times.

I'm not sure how useful this is because the 985 command does not seem to make my remote operate as the wiki describes.

http://www.hifi-remote.com/wiki/index.php?title=Manual_Programming_-_9xx_Commands#985:_Device_Multiplexor_.28Official.29

3FG · Expert Joined: 19 May 2009 Posts: 3367

The Wiki isn't quite correct. To change the cable code to one of the 4 stored setup codes, tap Cable and then simultaneously press/hold Setup and one of the 4 buttons previously programmed via 985. With both buttons held down, wait until the remote blinks twice. The associated setup code will be written into 0A/0B.

After a 981 reset, the 4 colored A, B, C, and D buttons are associated with the following setup codes:

1376 A "yellow"
1877 B "blue",
1377 C "red",
1982 D "green

I think you can associate a setup code with any button except device buttons, Power, and Setup.

Daniel_Eble · Joined: 28 Jun 2005 Posts: 10

Thanks, 3FG. I updated the wiki. (Hope it's clear and accurate.)

Daniel_Eble · Joined: 28 Jun 2005 Posts: 10

I notice that the key called "phantom1" in the RDF actually transmits a code in the default CBL 1376, if you create a macro containing it. EFC=00030 OBC=65 if I read it right. I've done a web search to see if I could find any information that would help choose a more meaningful name than phantom1; so far, nothing. I haven't tried any other device codes to see if they also have a use for this hidden button.

3FG · Expert Joined: 19 May 2009 Posts: 3367

"phantom1" is used in a list of buttons and the associated keyboard scan codes. Since there is no physical button with scan code $3E, we use phantom1 as the name of the "button". Some remotes have several phantom buttons. As you have seen, a phantom can be called from a macro, just as dev4, dev5, and dev6 can be used in a macro to get access to the 3 device modes which have no physical button.

So phantom1 is a perfectly good name, because it is describing a virtual button. We usually assign functions to correspondingly labeled buttons--e.g. we try to arrange things so that the IR signal which makes the volume go up is assigned to the Vol+ button. However, phantom1 has no label, 'cause there is no actual button.

So far as I know, OBC 65 does nothing. At least it doesn't on the Motorola cable boxes we have at our house. I think that it is just a mistake made by UEI, when they were assembling the tables of hex data associated with the button maps.

Daniel_Eble · Joined: 28 Jun 2005 Posts: 10

3FG · Expert Joined: 19 May 2009 Posts: 3367

This feature is accessible through the 984 command.

1) Press Setup until 2 blinks
2) Enter 984 (2 blinks)
3) Tap the device button which the punch through will operate
4) Tap any sequence of non-device buttons. These will punch through.
5) Tap any sequence of device buttons. Punchthrough will occur in the selected device modes.
6) Press Setup until 2 blinks

For example, after 984, tap AUD, then Up, Down Left, and Right. Then tap TV, DVR, and CBL. Press Setup until 2 blinks.

Now if in TV, DVR, or CBL mode, tapping Up, Down. Left, or Right will send the IR signals as defined for the arrow buttons in AUD mode. The AUD LED will flash on each tap. However, if the remote is in DVD mode, the arrow buttons will be sent to the DVD device as usual.

Daniel_Eble · Joined: 28 Jun 2005 Posts: 10

Thanks, 3FG. I added your instructions to the wiki, and I uploaded an RDF with the new settings.

I also found that the 971 command followed by a device key sets the value in the low nibble of $21. I haven't discovered any effect from it. Any ideas?

Also, the 974 command toggles bit 0 of byte $2c (reset default=1). I haven't looked for an effect yet.