The i2004 nintendo codes.

*** WARNING *** WARNING *** WARNING *** The following instructions show you how to access some of the nortel maintenance modes for your phone. THESE ARE ENTIRELY UNSUPPORTED!! These codes are powerful enough to DESTROY YOUR PHONE. If you break your phone using these codes, it is your fault. Neither I nor my employer accepts any responsibility for your use of these codes.
*** WARNING *** WARNING *** WARNING ***

The i2004 nintendo codes.

The base code for the i2004 is:

mute, up, down, up, down, up, mute

then you press a keypad key for different functions:

0) Display set firmware version.
1) Patch. Starting in RAM address space at address 0060
2) Patch. Starting in AB06 address space at address 00
3) Patch. Starting in EEPROM address space at address 00
4) Set TX and RX levels?? Power cycle to exit.
5) ??? screen shows TCMless Intercept.
6) No perceptible change.
7) Test mode. screen shows "TESTS" then incrementing counter, then "ERRORS" then (presumably, since it never incremented) error counter. powercycle to get out of this mode, since the quit key locks up the phone.
8) Screen shows STCM BERT. Powercycle to get out of this mode, since the quit key locks up the phone.
9) Reset phone. Works sometimes, other times it locks up the phone. Powercycle for a clean reset.

Softkey matrix: | Softkey code|1 |2 |3 |4 |

----------------------------------------|

0 | | | |Quit |
1 |Refresh |Jump To |Writeto |Quit |
2 |Refresh |Jump To |Writeto |Quit |
3 |Refresh |Jump To |Writeto |Quit |
4 |Assign |Buffer |HF Mode |SetBrk |
5 |TCM |Routing |Exit | |
6 | | | | |
7 |Quit |Start |Stop |Reset |
8 |Quit | | | |
9 | | | | |

I have not been able to find where they store node and TN config. I assume it will be in the EEPROM somewhere.

And remember, when playing Contra on the original NES:

Press Up, Down, Up, Down, Left, Right, Left, Right, A, B, A, B, Select, Start when "Jungle" appears on the demonstration screen.

to get unlimited lives.

Jeff