Motorola MC68030

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MC68030
Family: Motorola M68000 Family
Architecture: 32-bit
Manufacturer: Motorola
Year Introduced: 1987
Address bus: 32-bit
Data bus: 32-bit
Number of registers: 15 general 32-bit registers (8 data, 7 address)
Cache: 256 byte icache+dcache
Clock Speed: 16, 20, 25, 33, 40, 50 MHz


The Motorola MC68030 is a 32-bit microprocessor in the Motorola M68000 Family, the successor to the 68020. Later members include the 68040 and 68060.

The internal architecture was similar to the 68020; performance was increased in part by the increased use of caching; the MC68030 included an additional separate 256-byte cache for data.

It was the first family member to include memory management on the main chip. It did not include floating point; a separate floating point chip had to be used if hardware floating point was desired.

It was used in a number of Macintosh, Amiga and later Atari personal computers, and also workstations from NeXT.

Downgraded versions which omitted the memory management were produced.