Motorola
From radios to 68000
Motorola's 68000 processor powered the Amiga, Atari ST, and Sega Mega Drive—bringing 32-bit architecture to home computers and consoles.
Motorola’s semiconductor division created the 68000 family, processors that defined 16-bit computing. While Intel dominated the PC market, Motorola chips powered the machines beloved by creative professionals and gamers: Macintosh, Amiga, Atari ST, and Sega consoles.
Fast facts
- Founded: 1928 (originally Galvin Manufacturing).
- Semiconductor entry: 1955, military contracts.
- Key products: 6800 (1974), 68000 (1979).
- Later history: semiconductor division became Freescale (2004), then NXP (2015).
The 68000 family
| Processor | Year | Data/Address | Notable uses |
|---|---|---|---|
| 68000 | 1979 | 16/32-bit | Amiga, ST, Mac, Genesis |
| 68010 | 1982 | 16/32-bit | Virtual memory support |
| 68020 | 1984 | 32/32-bit | Amiga 1200, early Macs |
| 68030 | 1987 | 32/32-bit | Amiga 3000/4000, Macs |
| 68040 | 1990 | 32/32-bit | Late Macs, high-end Amigas |
Systems powered
Home computers
- Commodore Amiga (all models)
- Atari ST series
- Apple Macintosh (1984-1994)
- Sharp X68000
Consoles
- Sega Mega Drive/Genesis
- Neo Geo
- Sega CD (second 68000)
Arcade
- Countless boards throughout the late 80s/90s
- SNK MVS (Neo Geo arcade)
Why developers loved it
The 68000’s architecture was programmer-friendly:
- Orthogonal: most instructions worked with most registers
- Generous registers: eight data, eight address
- Clean addressing: multiple modes, sensible syntax
- Good tools: quality assemblers and compilers
Competition with Intel
| Factor | 68000 | 8086/80286 |
|---|---|---|
| Architecture | Clean | Segmented |
| Registers | 16 × 32-bit | Fewer, specialised |
| Developer preference | Often preferred | Business standard |
| Market outcome | Creative/gaming | PC dominance |
Legacy
Though PCs won the market, 68000 skills remained valuable:
- Embedded systems (ColdFire derivatives)
- Retro game development
- Foundation for understanding modern ARM