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Line 5:
Line 5: − * Why are there two CTRCARD controllers?+ − * Why are there two EMMC controllers?+ − * Is there a JTAG?+ − * Is there more than one revision of the bootrom?+ − * What is the EMMC controller @ 0x10100000 doing?+ − * Why did they put NTRCARD accessible from ARM11?+ + + + + + − * 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 is the PTM abbreviation?+ − * What is the PDN abbreviation?+ − * Why is the DTCM not used anywhere except bootrom?+ +
no edit summary
== Hardware ==
== Hardware ==
=== Why are there two CTRCARD controllers ===
=== Why are there two EMMC controllers? ===
'''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 a JTAG? ===
=== Is there more than one revision of the bootrom? ===
'''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 ==
== Software ==
=== 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 is the PTM abbreviation? ===
=== What is the PDN abbreviation? ===
=== 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.