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Man Pages
MGBA(6) FreeBSD Games Manual MGBA(6)

mgba
Game Boy Advance emulator

mgba [
-123456dfg
] [
-b biosfile
] [
-c cheatfile
] [
-l loglevel
] [
-p patchfile
] [
-s n
] [
-v moviefile
] file

mgba is a Game Boy Advance emulator. The options are as follows:
Scale the window 1×.
Scale the window 2×.
Scale the window 3×.
Scale the window 4×.
Scale the window 5×.
Scale the window 6×.
biosfile, --bios biosfile
Specify a BIOS file to use during boot. If this flag is omitted, mgba will use the BIOS specified in the configuration file, or a high‐level emulated BIOS if none is specified.
cheatfile, --cheats cheatfile
Apply cheat codes from cheatfile.
Start emulating via the command‐line debugger.
Start the emulator full‐screen.
Start a gdb(1) session. By default the session starts on port 2345.
loglevel
Log messages during emulation to stdout. loglevel is a bitmask defining which types of messages to log:
  • 1 – fatal errors
  • 2 – errors
  • 4 – warnings
  • 8 – informative messages
  • 16 – debugging messages
  • 32 – stub messages for unimplemented features
  • 256 – in‐game errors
  • 512 – software interrupts
  • 1024 – emulator status messages
  • 2048 – serial I/O messages
The default is to log warnings, errors, fatal errors, and status messages.
patchfile, --patch patchfile
Specify a patch file in BPS, IPS, or UPS format.
n, --frameskip n
Skip every n frames.
moviefile, --movie moviefile
Play back a movie of recording input from moviefile.

The default controls are as follows:
A
B
L
R
Start
Enter
Select
Backspace
Load state
F9
Save state
Shift⟩‐F1F9
Frame advance
Ctrl⟩‐n

When mgba is run with the -d option, the command‐line debugger is enabled. It supports the following commands:
[
reak
] address
 
[
reak
]/a address
 
[
reak
]/t address
Set a breakpoint – ARM (‘/a’), Thumb (‘/t’), or the current CPU mode – at address.
[
ontinue
]
Continue execution.
[
elete
] address
Delete a breakpoint at address.
[
asm
] [
address [
count
]
]
 
[
asm
]/a [
address [
count
]
]
 
[
asm
]/t [
address [
count
]
]
 
[
assemble
] [
address [
count
]
]
 
[
assemble
]/a [
address [
count
]
]
 
[
assemble
]/t [
address [
count
]
]
Disassemble count instructions starting at address, as ARM (‘/a’), Thumb (‘/t’), or the current CPU mode. If count is not specified, only disassemble the instruction at address. If address is not specified, only disassemble the current address.
[
elp
]
Print help.
[
nfo
]
 
Print the current contents of general‐purpose registers and the current program state register, and disassemble the current instruction.
[
ext
]
Execute the next instruction.
[
rint
] value ...
 
[
rint
]/t value ...
 
[
rint
]/x value ...
Print one or more values as binary (‘/t’), hexadecimal (‘/x’), or decimal.
[
uit
]
Quit the emulator.
Reset the emulation.
address
 
address
 
address
Read a byte (‘/1’), halfword (‘/2’), or word (‘/4’) from address.
[
atch
] address
Set a watchpoint at address.
address data
 
address data
 
address data
Write data as a byte (‘/1’), halfword (‘/2’), or word (‘/4’) to address.
register data
Write data as a word to register.
address [
count
]
 
address [
count
]
 
address [
count
]
Examine count bytes (‘/1’), halfwords (‘/2’), or words (‘/4’) from address. If count is not specified, examine 16 bytes, 8 halfwords, or 4 words.

The location where mgba will look for the configuration directory. If not set, ~/.config is used.

$XDG_CONFIG_HOME/mgba/config.ini
Default mgba(6) configuration file.
portable.ini
If this file exists in the current directory, mgba will read config.ini from the current directory instead of $XDG_CONFIG_HOME/mgba.

Jeffrey Pfau <jeffrey@endrift.com>

July 29, 2015 FreeBSD 12.0-RELEASE

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