I have released the EMUTools package for Maemo. It should be available from Extras shortly, or from

http://fms.komkon.org/EMUL8

EMUTools is a collection of command line utilities that help dealing with ROM images, disk images, soundtrack recordings, old assembly code, and so on. This package is mainly targeted at emulation and computer history enthusiasts.

[pre] BDIFF -- Binary file comparison
UNDOUBLE -- Binary file truncation
BEHEAD -- Header truncation
NESLIST -- List/check/fix NES ROM images (.NES)
GBLIST -- List/check/fix GameBoy ROM images (.GB)
GBALIST -- List/check/fix GameBoy Advance ROM images (.GBA)
FDSLIST -- List Famicom DiskSystem disk images (.FDS)
FDILIST -- List various disk images (.FDI,.TRD,.DSK,etc.)
FAM2FDS -- Convert DiskSystem images from .FAM to .FDS format
PSG2MID -- Convert AY8910 soundtrack recordings from .PSG to MIDI format
DASM6502 -- Little 6502 disassembler
DASMZ80 -- Little Z80 disassembler
GBDASM -- Little GameBoy disassembler[/pre]