Views: 91,729 Homepage | Main | Rules/FAQ | Memberlist | Active users | Last posts | Calendar | Stats | Online users | Search 10-17-17 02:08 AM
Guest:

0 users reading Memory expansion pak | 1 bot

Main - Development - Memory expansion pak New reply


StapleButter
Posted on 10-10-17 07:55 PM Link | #391
The one that comes with the DS browser.


First 16MB of the GBA ROM address range are all FF, except:

080000B2: 00 00 00 24 24 24 (signature?)
080000BF: 7F
0801FFFF: 7F
08240000: 32bit register; bit0: 1=enable RAM, 0=disable; other bits are always zero; initial value is 00000001

The register is the only thing that can be written to.


The 8MB at 0x09000000 are the RAM. Initially garbage-filled. When disabled, reads FF, but contents are retained (atleast for a certain time).


0x09800000 and up are open-bus.


Main - Development - Memory expansion pak New reply

Page rendered in 0.024 seconds. (2048KB of memory used)
MySQL - queries: 28, rows: 73/73, time: 0.018 seconds.
[powered by Acmlm] Acmlmboard 2.064 (2015-10-07)
© 2005-2008 Acmlm, Xkeeper, blackhole89 et al.