256 bytes each for instruction and data, 16 lines of 4 entries of 4 bytes each, direct mapped[1][2]
Architecture and classification
Instruction set
Motorola 68000 series
Physical specifications
Transistors
273,000
Package
132 pin QFP and PGA 169 (128 pins used)
Products, models, variants
Variant
68EC030
History
Predecessor
Motorola 68020
Successor
Motorola 68040
The Motorola 68030 ("sixty-eight-oh-thirty") is a 32-bit microprocessor in the Motorola 68000 family. It was released in 1987. The 68030 was the successor to the Motorola 68020, and was followed by the Motorola 68040. In keeping with general Motorola naming, this CPU is often referred to as the 030 (pronounced oh-three-oh or oh-thirty).
The 68030 is essentially a 68020 with a memory management unit (MMU) and instruction and data caches of 256 bytes each. It added a burst mode for the caches, where four longwords can be loaded into the cache in a single operation. The MMU was mostly compatible with the external 68851 that would be used with the 68020,[3] but being internal allowed it to access memory one cycle faster than a 68020/68851 combo. The 68030 did not include a built-in floating-point unit (FPU), and was generally used with the 68881 and the faster 68882. The addition of the FPU was a major design note of the subsequent 68040. The 68030 lacks some of the 68020's instructions, but it increases performance by ≈5% while reducing power draw by ≈25%.
The 68030 features 273,000 transistors. A lower-cost version was also released, the Motorola 68EC030, lacking the on-chip MMU. It was commonly available in both 132-pin QFP and 128-pin PGA packages. The poorer thermal characteristics of the QFP package limited that variant to 33 MHz; the PGA 68030s included 40 MHz and 50 MHz versions. There was also a small supply of QFP packaged EC variants.
Motorola MC68030RC33B die
The 68030 can be used with the 68020 bus, in which case its performance is similar to 68020 that it was derived from. However, the 68030 provides an additional synchronous bus interface which, if used, accelerates memory accesses up to 33% compared to an equally clocked 68020. The finer manufacturing process allowed Motorola to scale the full-version processor to 50 MHz. The EC variety topped out at 40 MHz.
^Cite error: The named reference m30 was invoked but never defined (see the help page).
^"MC68030 User Manual" (PDF). Motorola. 1990.
^Gord, Roy (May 2, 1990). "68851 PMMU and 68030 MMU". Archived from the original on March 3, 2023. Retrieved May 24, 2017. Neither the PMMU nor the 68030 MMU constitutes a proper superset of the other. The PMMU has instructions and registers not found in the 68030 MMU, while the latter has registers not on the PMMU. However, in a typical Unix implementation little work would needed [sic] to port PMMU specific code to the 68030.
The Motorola68030 ("sixty-eight-oh-thirty") is a 32-bit microprocessor in the Motorola 68000 family. It was released in 1987. The 68030 was the successor...
Motorola 68040 ("sixty-eight-oh-forty") is a 32-bit microprocessor in the Motorola 68000 series, released in 1990. It is the successor to the 68030 and...
"oh-twenty". The 020 was in the market for a relatively short time. The Motorola68030 was announced in September 1986 and began deliveries in the summer of...
designed for the PDS slot in the Motorola68030-based Macintosh SE/30, for example, would not work in the Motorola 68040-based Quadra 700. The one notable...
high-end model of the Atari ST line, the machine is based on a Motorola68030 CPU and a Motorola 56001 digital signal processor, which distinguishes it from...
limited RAM to 10 MB (as opposed to the 32-bit limit of 4 GB). The Motorola68030 was the first Mac processor with an integrated paged memory management...
has a 10 MHz Motorola 68000 CPU, 1 MB of RAM, and lacks a hard drive. The final model was released in 1993 with a 25 MHz Motorola68030 CPU, 4 MB of RAM...
Similarly, the Motorola68030 represents a process improvement on the 68020 with the MMU and a small data cache (256 bytes) moved on-chip. The 68030 was released...
Motorola 68881 and Motorola 68882 are floating-point units (FPUs) used in some computer systems in conjunction with Motorola's 32-bit 68020 or 68030 microprocessors...
RISC-based workstations emerged; the latest Sun-3/80 running on a 20 MHz Motorola68030 delivered about 3 MIPS, whereas the first SPARC-based Sun-4/260 with...
hundred") is an 8-bit microprocessor designed and first manufactured by Motorola in 1974. The MC6800 microprocessor was part of the M6800 Microcomputer...
the preceding Macintosh SE/30, the Classic II was powered by a 16 MHz Motorola68030 CPU but experienced about 30% slower performance due to the limitations...
A2620 included a Motorola 68881 FPU and Motorola 68851 MMU, whereas the A2630 included a Motorola 68882 FPU (and MMU built into the 68030). Because the A2500...
2023), aimed at the higher-education market. It was designed around the Motorola68030 CPU and 68882 floating-point coprocessor, with a clock speed of 25 MHz...
that of the 170, but it shipped with the more powerful 33 MHz Motorola68030 CPU and Motorola 68882 FPU. Along with the 160, it introduced a new power-saving...
and 550 both using different speeds of the Motorola68030, and the 575 and 580 sharing the 33 MHz Motorola 68LC040 processor but differing on the rest...
Motorola 68000 @ 12.288 MHz [16] Archived 18 May 2015 at the Wayback Machine (4.301 MIPS [17] Archived 9 March 2020 at the Wayback Machine), Motorola...
Motorola 68020, and have a similar memory management unit. The page size is increased to 8 KB. (The later models are built around the Motorola68030 and...
Processor Direct Slot, the IIci also improved upon the IIcx's 16 MHz Motorola68030 CPU and 68882 FPU, replacing them with 25 MHz versions of these chips...
entirely reworked and rethought as a high-end workstation. The new Motorola 32-bit 68030 CPU, 68882 math co-processor, and 32-bit system memory increase...
LC 500 series and Power Macintosh 5200 LC. The Color Classic has a Motorola68030 CPU running at 16 MHz and has a logic board similar to the Macintosh...
the PowerBook Duo 230, but it shipped with 25 MHz Motorola68030, instead of the faster 33 MHz 68030 on the Duo 230. The PowerBook Duo 210 had a 80MB SCSI...
The IIvi was introduced alongside the Macintosh IIvx, using a slower Motorola68030 processor (16 MHz vs. 32 MHz) and no floating point unit. The Performa...
in the Apple II series), and the x was Apple's designation for the Motorola68030 processor. Users liked the Mac IIcx, in part, because its components...
the lower end being the US $2,250 PowerBook Duo 210. With a 33 MHz Motorola68030 microprocessor, 4 MB of RAM and an 80 or 120 MB SCSI hard disk drive...
The Motorola 68000 (sometimes shortened to Motorola 68k or m68k and usually pronounced "sixty-eight-thousand") is a 16/32-bit complex instruction set...
"tt" or "T.T." on Wikipedia. Atari TT030, a computer based on the Motorola68030 CPU TT-Line, a German shipping company TT-Line Company, a ferry company...
Global Information
