After performing the 1st dump of a TI-Nspire CAS+ OS in
may 2012,
then making those OSes installable, and finally performing the 1st dump of a TI-Nspire CAS+ Boot1 in
a previous news, today is another great day in TI-Nspire CAS+ history!
The first dumping of a TI-Nspire CAS+ Boot2 has finally been performed, with Goplat's help!
The dumped Boot2 version comes from the P1-EVT2 CAS+ datamath.org which was running OS 1.0.1.0.334T, and doesn't display the usual Nspire logo but a Texas Instruments logo.
The Boot2 image doesn't use the
"JBOOT2" header from later TI-Nspire, but a
"HBOOT2" header:
This
'H' was
already noticed in the OS header
"HPHOENIX"There is no Boot2 version string - the only hint being the build date:
Let's have a look at the system strings:
We can confim that only 2 boot key combos are checked by the Boot2:
: launches an OS image without installing it - OS has to be sent through RS232 - option removed on TI-Nspire CX/CM-
: what became later the maintenance menu but it's no menu at all on CAS+ - removes the OS without asking you to confirm - dangerous
The method uses the RS232 Datalight console, disabled on later models.
But even if such method cannot be reused to dump later CAS+ Boot1/Boot2 versions, the P1-EVT2 CAS+ prototype has now given us everything it could!
Yes: OS 1.0.1.0.334T + Boot1 + Boot2 - we've now got a full set of compatible CAS+ software elements, meaning that we can start being serious!
To be continued... Source:http://tiplanet.org/forum/viewtopic.php?t=10663
