GerbilSoft/rvthtool
1
Fork 0
mirror of https://github.com/GerbilSoft/rvthtool.git synced 2025-06-18 11:35:33 -04:00
Code Issues Actions Packages Projects Releases Wiki Activity

doc/rvth_notes.md: Added copyright and GFDL notice; minor terminology update.

Browse Source 
Use "RVT-H Reader" when referring to the system itself, and "HDD"
instead of "disk" to prevent ambiguity.
This commit is contained in:
David Korth 2018-04-25 20:59:57 -04:00
parent a3384aa9fe
commit 6c7cc2cba6
1 changed files with 18 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
doc/rvth_notes.md
View File

@ -1,13 +1,16 @@
# RVT-H Reverse-Engineering Notes
These notes were written using a full dump of an RVT-H disk using the
This document is Copyright (C) 2018 by David Korth.<br>
Licensed under the GNU Free Documentation License v1.3.
These notes were written using a full dump of an RVT-H Reader HDD using the
front-panel USB port and an API trace of rvtwriter.exe 1.0.0.4.
NOTE: Sectors (LBAs) are assumed to be 512 bytes.
## Test System
According to rvtwriter, this RVT-H has:
According to rvtwriter, this RVT-H Reader has:
* Bank 1: Empty
* Bank 2: THE LAST STORY / 2011.11.25 10:18:15
* Bank 3: ^ (dual-layer)
@ -49,10 +52,10 @@ typedef struct _NHCD_BankTable_Header {
} NHCD_BankTable_Header;
```
On all known RVT-H systems, `bank_count` is set to 8. Earlier models included
a 40 GB HDD, which can hold up to 8 banks. Later models have an 80 GB HDD,
possibly because the 40 GB HDD was no longer manufactured. These systems are
still limited to 8 banks by default.
On all known RVT-H Reader systems, `bank_count` is set to 8. Earlier models
included a 40 GB HDD, which can hold up to 8 banks. Later models have an
80 GB HDD, possibly because the 40 GB HDD was no longer manufactured. These
systems are still limited to 8 banks by default.
By modifying `bank_count`, it is possible to get more than 8 banks on systems
with larger HDDs. Note that the bank table size will increase by 512 bytes
@ -62,11 +65,11 @@ be repartitioned.
rvthtool does not currently support non-standard partition layouts.
Note that the front-panel display on the RVT-H has a 4-bit binary counter.
This counter normally shows 1-8 for selected banks, or 15 if the drive is
in "writable" mode. It should be possible to extend `bank_count` to at
least 14. Larger bank counts may work, but the counter display will be
incorrect.
Note that the front-panel display on the RVT-H Reader has a 4-bit binary
counter. This counter normally shows 1-8 for selected banks, or 15 if the
drive is in "writable" mode. It should be possible to extend `bank_count`
to at least 14. Larger bank counts may work, but the counter display will
be incorrect.
$60000200: Bank 1. Each bank entry is 512 bytes.
```c
@ -114,10 +117,11 @@ The standard NHCD layout is as follows:
## Deleted Banks
* On some RVT-H systems, deleting a bank by pressing the "Flush" button
* On some RVT-H Reader systems, deleting a bank by pressing the "Flush" button
merely erases the bank table entry.
* On other RVT-H systems, this also zeroes out the first 16 KB of the bank.
* This may depend on the RVT-H firmware version.
* On other RVT-H Reader systems, this also zeroes out the first 16 KB of the
bank.
* This may depend on the RVT-H Reader firmware version.
The first 16 KB contains:
* Wii: Disc header.