TI-84 Won't Turn On


Working with one of my classes to get graphing calculators onto some new school laptops, I managed to have them load Wabbitemu onto them. One person is having trouble starting the calculator after it has loaded. Running Windows 7, 64-bit, we can't determine why it won't turn on. We've tried Debug > Reset, but to no avail. I wwould love some suggestions, thanks!


BuckeyeDude wrote Feb 5, 2013 at 6:41 PM


Usually when the calculator won't turn on its due to issues with the ROM. A quick check for this is to open the debugger (Debug->Open Debugger), and look at the line that is highlighted. If the line is gold and says HALT, then it is good to that point. If it says something else, like rst $38, the ROM is corrupted and you'll need to remake it.

Let me know what the debugger says when you open it, and I can help you more from there. Its most likely that you'll have to recreate the ROM, so I would suggest doing that too.


wrote Feb 22, 2013 at 1:44 AM

coacholmes wrote Aug 21, 2013 at 3:54 AM

OK we're running windows 7, and I got the skin, BUT I can't get it to do anything. The screen will say:
TI-84 Plus
RAM cleared

But I can't activate any of the buttons.

I read the previous thread about Debugging and the following line is (I guess) highlighted in silver/grey
37 6D60 cb7f bit 7 , a 2 8

How do I recreate the ROM? Is that just redoing the install process or something else?

Eric Holmes

coacholmes wrote Aug 21, 2013 at 3:59 AM

Turned it off and then back on this time in GOLD I've got
00 0B93 c3180a jp$0A18

Change anything for you?

billr247 wrote Apr 24, 2014 at 7:55 PM

I have loaded wabbitemu on a classroom of computers, I have one that is not cooperating. I am using the TI-84 Plus Silver Edition, the skin shows up but it will not turn on. I went to the debugger and here is the highlighted entry:
Addr Data Disassembly Size Clocks
00 03A2 c9 ret 1 10

I have loaded and reloaded several times. Please, any suggestions, thanks so much

BuckeyeDude wrote Apr 25, 2014 at 6:17 AM

@billr247, it looks like your ROM is valid based on that line. Try doing a Debug->Reset calculator. Then Debug->Turn calculator on. If that doesn't work, rerun the setup wizard (Help->Rerun setup wizard) and recreate the ROM using the same process.

Let me know, if either of those doesn't fix it, and I'll investigate further.


wrote Jul 5, 2014 at 2:00 PM