Long Blink After JP1 Connection

ti83programmer · Post by **ti83programmer** » Thu Nov 25, 2004 9:58 pm

I do apologize for my self-centered comments from earlier. I now have the cable back.

I messed around with the RDF and the checksum and it works now, not exactly sure how. But in any case, I now have a good working 1K RDF. Now there's a new problem.

I've tried making some modifications to the 8811 3.1 extender (which means I'm just messing around with the order of the upgrade and keymove memory areas) and making a new RDF. So far, that works. But, when I upload it, I get the usual two blinks and then one long blink, so the upload failed. My question is what are some things that might cause such a thing to happen? Because I'm at a loss at where to start searching for answers.

johnsfine · Post by **johnsfine** » Fri Nov 26, 2004 8:04 am

How did you make the extender and its RDF compatible with a 1K eeprom? The symptoms you report say its RDF isn't compatible with a 1k eeprom (you didn't get far enough for it to matter if the extender was compatible).

I'll guess you made the obvious changes. But did you know about the part of the RDF that is

[FixedData]
$023 = $14

for a 2K eeprom, vs.

[FixedData]
$023 = $13

for a 1k eeprom.

Post by **The Robman** » Fri Nov 26, 2004 10:33 am

I think you should also post what checksum range you are using.

ti83programmer · Post by **ti83programmer** » Fri Nov 26, 2004 9:26 pm

I took the 1K RDF and made changes to it so that it would point to the new keymove and upgrade memory areas, so I never had the fixed data problem you mentioned.

I re-assembled the 3.1 extender with the new (same as RDF) addresses and combined it with an empty save using that RDF with extinstall.

So, you have the TV power macro in the old area (not viewable in IR), and anything new (like device selection macros) that do show up in IR. I believe I used the same checksum range and I get zero errors from the PC, it buys all this. But the remote doesn't. Double blink, then one long one. No power macro.

Mark Pierson · Post by **Mark Pierson** » Sat Nov 27, 2004 4:49 am

Where's the extender code itself getting loaded? In the 2k extender, it's in the upper half of the EEPROM (the learning area) if I'm not mistaken.

ti83programmer · Post by **ti83programmer** » Sat Nov 27, 2004 3:15 pm

Just to get it to execute code, I removed all of the extender code and just put a RET at the end of the EEPROM (just before $400). The device and protocol to load it go in the new upgrade area, and the keymove to load it goes in the old keymove area. It couldn't be any simpler...I assemble it, extinstall it, and upload it with IR, and I get double blinks then one long blink.