ROM and memory images

Atari 2600

 * A26
 * BIN
 * ROM

Atari 5200

 * A52
 * BIN

Atari 7800

 * A78
 * BIN

Atari Jaguar

 * BIN
 * JAG
 * ROM

Emerson Arcadia

 * BIN

Mattel Intellivision

 * BIN
 * INT
 * ITV
 * ROM

NEC TurboGrafx-16 / PC Engine

 * PCE

NES / Famicom / Famicom Disk System

 * FAM
 * FDS
 * FFE
 * NES
 * Pasofami (Needs to be confirmed)
 * UNF

Nintendo 64

 * BIN
 * JAP
 * N64
 * PAL
 * ROM
 * U64
 * USA
 * V64
 * Z64

Nintendo DS

 * NDS

Nintendo Game Boy / Game Boy Color

 * GB
 * GBC

Nintendo Game Boy Advance

 * GBA

Sega Game Gear

 * GG

Sega Genesis / Mega Drive / 32X

 * 32X
 * GEN / BIN
 * MD
 * SMD

Sega Master System / Mark III

 * SMS

Sega SG-1000

 * SG

Super NES / Super Famicom / Satellaview

 * 048
 * 058
 * 078
 * AUS
 * BIN
 * BS
 * DX2
 * EUR
 * FIG
 * GD3
 * GD7
 * JAP
 * MGD
 * MGH
 * SFC
 * SMC
 * ST
 * SWC
 * UFO
 * USA

Vectrex

 * GAM
 * VEC

TI Calculators

 * 89u
 * 8xu
 * 92u
 * More

Sharp X68000

 * 2HD
 * HDM
 * DIM
 * X68
 * XDF

Container formats

 * SREC / S-Record
 * Intel HEX
 * BIN44 (very rare, comes from Nortel, ask User:Chronomex)