Les 68k n'ont jamais été interdites au BAC depuis leur sortie en 1996.

Comme quoi, même un professeur de mathématiques peut dire des bêtises... parfois


Je ne peux que te conseiller d'aller lire cet article très sérieux fait par un professeur de mathématiques, sur la base de travaux de juristes:
http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=951

Here is it, finally:
http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=1013

The TI-84Pocket.fr is just a basic TI-84+ with 480Kb archive, and the creepy 2.55MP OS. (hope we can still downgrade...)
Finally, the dimensions are 160 x 69 x 22 mm^3.

So we were quite accurate in the previous news, but note it's slightly smaller than the TI-80 (161x70 mm²).


I hope TI won't discontinue TI-84+SE in France, now...
Both french basic & SE 84+ pages are not accessible through TI-France links any more...

Great! Thank you very much for the list of commands

On another note, I did a little reverse engineering of pn-net.dll. It connects to a CAS+ on TCP port 10001, and the protocol is text based. You could probably use a telnet-type program to communicate with the CAS+ manually. The "info 1" command gets some information about the calculator; the command to list a directory is "dir directoryname". Might be worth seeing if you can access more of the filesystem this way than by using Computer Link.

Very interesting.
Just tried this.

I plugged a production CAS+ and my "Texas Instrument" network interface got the IP 172.16.50.25 (this is the IP of my computer on the "CAS+" network).
Seems the Nspire CAS+ was using the IP 172.16.50.26.

Here is what "info 1" is printing with the production CAS+ (boot1/boot2 1.0.526 + OS 1.0.554)
0
 addr=2886742554
                mask=4294967292
                               b1v=01,00,02,14
                                              b2v=01,00,02,14
                                                             bat=0,3,0,0,0,0,0,0

clk=78
      disk=29188096,22750208,4294967295
                                       eid=0C0FE480C1986857BA3
                                                              hwv=00,00,00,192
                                                                              na
me=phoenix
          ram=0,0,20971760
                          ready=32864,0
                                       run=3
                                            scrn=38400
                                                      ser=254,72,12,25,00,00,00,
00
  sgeo=240,320,4,0
                  ver=01,00,02,42
Anything interesting?

Unfortunately, the "dir" command doesn't seem to show anything more than the usual TI-Nspire Computer Link "virtual" drive:
/
/phx
/phx/documents
/phx/tmp

We don't have access to the real file system...
(I wonder why TI didn't keep things like that for the final Nspire...)


Edit: the protocol doesn't seem to unstand special folders like ".", "..", or "~".


Edit2: retried with my developer CAS+ (Boot1/2 1.0.491 + OS 1.0.494)
0
 addr=2886748730
                mask=4294967292
                               b1v=01,00,01,235
                                               b2v=01,00,01,235
                                                               bat=0,0,0,0,0,0,0
,0
  clk=78
        disk=29188096,23237632,4294967295
                                         eid=0C039C11C25D761EEFE
                                                                hwv=00,00,00,192

name=phoenix
            ram=0,0,20971760
                            ready=32864,0
                                         run=3
                                              scrn=38400
                                                        ser=57,193,28,37,00,00,0
0,00
    sgeo=240,320,4,0
                    ver=01,00,01,238This time, the computer got the IP 172.16.74.58 and the CAS+ 172.16.74.59.

On another note, I've got a strange key combo for the TI-Nspire CAS+:
Menu+Esc

The calculator just does not turn on and can't be turned on.
I have to remove the batteries.

Maybe the combo to launch the diagnostic software, which is not included in the CAS+?


Strangely, with Esc+Menu+Joypad, the calculator does turn on...

Ok, so the CAS+ RSA keys are different, which means:
- we can't flash a boot2
- we can't flash a diags (I've never seen any diags on a CAS+)
- we can't flash an OS
- we can't run a test image

Moreover, we can't access the whole filesystem through the USB driver.
(seems we only have access to a virtual drive, which just links to 2 "safe" folders: /documents and /phoenix/tmp ).

Well... The CAS+ seems much more closed than the final TI-Nspire.


I've tried to send an OS with "exploit1" in RS232, and I've added the header this time.
Here's what I got:
Loading Operating System...

Error loading OS image. Removing OS remnants.
Deleting file [/phoenix/manuf.dat]
Removing directory [/phoenix/install/]

Waiting for OS download.
Starting Connectivity services.
USB Download is enabled.
Press <Enter> to download through the serial port.
phoenix dhcp server w/ VOODOO  built 12-Jul-2006 (start at 832)


phoenix enum server  built 12-Jul-2006


phoenix dhcp hook fwd w/ VOODOO  built 12-Jul-2006 (start at 832)


phoenix file mgt server  built 12-Jul-2006 (start at 932)

pn-srv2-636: pol_init = -1
Checking battery level.
Battery level is OK.
TI_OS_INSTALL_PRECHECK (5)
TI_OS_INSTALL_VERIFYING_IMAGE (10)
TI_OS_INSTALL_VERIFYING_RESOURCE (95)
Deleting file [/tmp/manifest_img]
Deleting file [/tmp/phoenix.img]
TI_OS_INSTALL_FAILED
  TI_OS_INSTALL_MANIFEST_INVALID
Seems the CAS+ absolutely wants a manifest file.

On my oldest orange-blue CAS+ (OS 1.0.1.0.334T), that file was just named "manifest" and did only include the name of another file: "devfiletree.zip".
But it may be different on production CAS+. According to several logs, the /phoenix/install files are using different names...

Any idea on how to generate a TNC file which would at least pass the "precheck" of the CAS+?
Maybe a look at the TI-Nspire Computer Link 1.0 Java code can be usefull:
http://ti.bank.free.fr/index.php?mod=archives&ac=voir&id=1439
It does some checking on the TNC file too, prior to sending it.

Here what the "type" command is showing me for "string.res":

C:\phoenix\syst\locales\en\>type strings.res


tionains a file named 'åðŸåðŸåðŸå�˜™™™™™(¡P¡'. Do you want to replace it?ion is managing data collection; if you wish to collect data within TI-Nspire please close TI-Nspire and the other data collection application then restart TI-Nspire.etry OS upgrade.(remember the type command is buggy, unfortunately...)

I'm back on the TI-Nspire CAS+.

Today, I can finally answer you about flashing.


I've taken a standard TI-Nspire CAS+ with boot1/boot2 1.0.526.

Using Menu+Enter+B and Menu+Enter+G, I've tried to flash developer & production  basic/CAS TI-Nspire boot2 & diags.

Diags flashing:
Boot Loader Stage 1 (1.0.526)
Build: 2006/8/11, 6:25:18
Copyright (c) 2006 Texas Instruments Incorporated
Using production keys

Last boot progress: 1

System clock:        78 MHZ
SDRAM memory test:   Pass
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Checking for NAND: NAND Flash ID: ST Micro NAND256W3A

-- Bad Block list --
0x00058000 (22)
0x001F0000 (124)
-- Bad Block list end --

Keypad request - installing DIAGS software...

Erasing old DIAGS image.

Ready to download DIAGS software...

Begin XMODEM file transfer.
Updating DIAGS image.
DIAGS image has been updated.
Restarting now.

Boot Loader Stage 1 (1.0.526)
Build: 2006/8/11, 6:25:18
Copyright (c) 2006 Texas Instruments Incorporated
Using production keys

Last boot progress: 15474

System clock:        78 MHZ
SDRAM memory test:   Pass
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Checking for NAND: NAND Flash ID: ST Micro NAND256W3A

-- Bad Block list --
0x00058000 (22)
0x001F0000 (124)
-- Bad Block list end --

Loading DIAGS software...

20%Error reading/validating DIAGS image

Loading BOOT2 software...
Boot2 flashing:
Boot Loader Stage 1 (1.0.526)
Build: 2006/8/11, 6:25:18
Copyright (c) 2006 Texas Instruments Incorporated
Using production keys

Last boot progress: 1

System clock:        78 MHZ
SDRAM memory test:   Pass
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Checking for NAND: NAND Flash ID: ST Micro NAND256W3A

-- Bad Block list --
0x00058000 (22)
0x001F0000 (124)
-- Bad Block list end --

Ready to download BOOT2 image...

Begin XMODEM file transfer.
Erasing old BOOT2 image.
Updating BOOT2 image.
BOOT2 image has been updated.
Restarting now.

Boot Loader Stage 1 (1.0.526)
Build: 2006/8/11, 6:25:18
Copyright (c) 2006 Texas Instruments Incorporated
Using production keys

Last boot progress: 15474

System clock:        78 MHZ
SDRAM memory test:   Pass
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Clearing SDRAM...Done.
Checking for NAND: NAND Flash ID: ST Micro NAND256W3A

-- Bad Block list --
0x00058000 (22)
0x001F0000 (124)
-- Bad Block list end --

Loading DIAGS software...

Error reading/validating DIAGS image

Loading BOOT2 software...

20%Error reading/validating BOOT2 image

Error loading BOOT2, looking for pre-installed images.
Checking for DIAGS image in pre-install area.
No DIAGS image found.
Checking for BOOT2 image in pre-install area.
No BOOT2 image found.

Error loading BOOT2, install new version.
Checking battery level.
Battery level is OK.

Ready to download BOOT2 software...

Begin XMODEM file transfer.

The RSA production keys used on the TI-Nspire CAS+ seem different from both RSA developer and production keys used on basic/CAS TI-Nspire.

Which mean we won't be able to flash a 1.1 OS before many years.


But it's still interesting to dig into the CAS+ in order to:
- dump boot1/boot2/OS
- be able to update boot2/OS
- be able to reinstall boot2/OS if they are damaged
- develop a compatible Ndless version