Mysteries: Difference between revisions

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== Hardware ==

* Why are there two CTRCARD controllers?

=== Why are there two CTRCARD controllers ===

* Why are there two EMMC controllers?

=== Why are there two EMMC controllers? ===

* Is there a JTAG?

'''Theory:''' At some point during 3DS hardware development there was an idea to split up CTR and TWL nand into two different chips.

* Is there more than one revision of the bootrom?

=== Is there a JTAG? ===

* What is the EMMC controller @ 0x10100000 doing?

=== Is there more than one revision of the bootrom? ===

* Why did they put NTRCARD accessible from ARM11?

'''Background:''' Bootrom visible portion has been dumped on 3DS, 3DSXL, 2DS, New3DS. All matching exactly.

=== What is the EMMC controller @ 0x10100000 doing? ===

'''Background:''' There's dead code in NWM referencing it.

=== Why did they put NTRCARD accessible from ARM11? ===

=== Is there a secret message embedded in the 3DS keyscrambler constant? ===

'''Background:''' TWL keyscrambler constant was Nintendo in Japanese, utf-8 encoded.

== Software ==

* What was the problem in "initial program loader" that was mentioned in an FCC filing by Nintendo for 2DS?

=== What was the problem in "initial program loader" that was mentioned in an FCC filing by Nintendo for 2DS? ===

* What did SVC 0x74 in the ARM11 kernel do before it got stubbed?

=== What did SVC 0x74 in the ARM11 kernel do before it got stubbed? ===

* What is the PTM abbreviation?

=== What is the PTM abbreviation? ===

* What is the PDN abbreviation?

=== What is the PDN abbreviation? ===

* Why is the DTCM not used anywhere except bootrom?

=== Why is the DTCM not used anywhere except bootrom? ===

'''Background:''' Bootrom is known to use part of DTCM as state, memsetting it to 0 when it's done. After that, it is never used again.

@@ Line 5: / Line 5: @@
 == Hardware ==
-* Why are there two CTRCARD controllers?
+=== Why are there two CTRCARD controllers ===
-* Why are there two EMMC controllers?
+=== Why are there two EMMC controllers? ===
-* Is there a JTAG?
+'''Theory:''' At some point during 3DS hardware development there was an idea to split up CTR and TWL nand into two different chips.
-* Is there more than one revision of the bootrom?
+=== Is there a JTAG? ===
-* What is the EMMC controller @ 0x10100000 doing?
+=== Is there more than one revision of the bootrom? ===
-* Why did they put NTRCARD accessible from ARM11?
+'''Background:''' Bootrom visible portion has been dumped on 3DS, 3DSXL, 2DS, New3DS. All matching exactly.
+=== What is the EMMC controller @ 0x10100000 doing? ===
+'''Background:''' There's dead code in NWM referencing it.
+=== Why did they put NTRCARD accessible from ARM11? ===
+=== Is there a secret message embedded in the 3DS keyscrambler constant? ===
+'''Background:''' TWL keyscrambler constant was Nintendo in Japanese, utf-8 encoded.
 == Software ==
-* What was the problem in "initial program loader" that was mentioned in an FCC filing by Nintendo for 2DS?
+=== What was the problem in "initial program loader" that was mentioned in an FCC filing by Nintendo for 2DS? ===
-* What did SVC 0x74 in the ARM11 kernel do before it got stubbed?
+=== What did SVC 0x74 in the ARM11 kernel do before it got stubbed? ===
-* What is the PTM abbreviation?
+=== What is the PTM abbreviation? ===
-* What is the PDN abbreviation?
+=== What is the PDN abbreviation? ===
-* Why is the DTCM not used anywhere except bootrom?
+=== Why is the DTCM not used anywhere except bootrom? ===
+'''Background:''' Bootrom is known to use part of DTCM as state, memsetting it to 0 when it's done. After that, it is never used again.