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{{Short description|32-bit microprocessor}}
The '''68030''' is a ] ] in ]'s ], with on-chip split instruction and data cache of 256 ] each. The 68030 has an on-chip ]. The ] and the faster ] ] (floating point unit) chips could be used with the 68030.
{{Use mdy dates|date=November 2023}} {{Use American English|date=November 2023}}
{{Infobox CPU
| image = Motorola 68030 32-bit microprocessor.jpg
| designfirm = Motorola
| produced-start = 1987
| arch = ]
| data-width = 32 bits
| address-width = 32 bits
| slowest = 16
| slow-unit = MHz
| fastest = 50
| fast-unit = MHz
| l1cache = 256 bytes each for instruction and data, 16 lines of 4 entries of 4 bytes each, direct mapped<ref name=m30/><ref name="um">{{cite web|url=https://www.nxp.com/docs/en/reference-manual/MC68030UM.pdf|title=MC68030 User Manual|date=1990|publisher=Motorola}}</ref>
| pack1 = 132 pin ] and ] (128 pins used)
| transistors = 273,000
| variant = 68EC030
| predecessor = ]
| successor = ]
}}


The '''Motorola 68030''' ("''sixty-eight-oh-thirty''") is a ] microprocessor in the ]. It was released in 1987. The 68030 was the successor to the ], and was followed by the ]. In keeping with general ] naming, this CPU is often referred to as the 030 (pronounced ''oh-three-oh'' or ''oh-thirty'').
A lower cost version of the 68030, the ], was also released, lacking the on-chip MMU.


The 68030 is essentially a 68020 with a ] (MMU) and instruction and data caches of 256 ]s each. It added a ] for the caches, where four ]s can be loaded into the cache in a single operation. The MMU was mostly compatible with the external ] that would be used with the 68020,<ref>{{cite web |first=Roy |last=Gord |date=2 May 1990 |title=68851 PMMU and 68030 MMU |url=http://www.verycomputer.com/154_18105061e58769a5_1.htm |access-date=2017-05-24| archive-url=https://web.archive.org/web/20230303005713/http://www.verycomputer.com/154_18105061e58769a5_1.htm |archive-date=3 March 2023 |url-status=dead |quote=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 to port PMMU specific code to the 68030.}}</ref> but being internal allowed it to access memory one cycle faster than a 68020/68851 combo. The 68030 did not include a built-in ] (FPU), and was generally used with the ] and the faster ]. The addition of the FPU was a major design note of the subsequent 68040. The 68030 typically increases performance by ≈5% over the 68020, while reducing power draw by ≈25%.
The 68030 was the successor to the ], and was followed by the ]. The 68030 was used in many models of the ] and ] series of ] as well as the ].


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 ] and 128-pin ] packages. The poorer thermal characteristics of the QFP package limited that variant to 33&nbsp;MHz; the PGA 68030s included 40&nbsp;MHz and 50&nbsp;MHz versions. There was also a small supply of QFP packaged EC variants.
''Note:''


]
In keeping with general Motorola naming, this CPU is often referred to as the '''030''.


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&nbsp;MHz. The EC variety topped out at 40&nbsp;MHz.
----
''This article (or an earlier version of it) contains material from ], used with ].''


==Usage==
] ]
The 68030 was used in many models of the ] ] and ] series of ]s, ] ], later ] multiuser systems, and some descendants of the ] line such as the ] and the ]. It was also used in Unix ]s such as the ] ] line of desktop workstations (the earlier "sun3" used a 68020), ]'s ] workstations,<ref>{{cite web|url=https://web-docs.gsi.de/~kraemer/COLLECTION/www.hunkler.com/aegis/aegis_sg.html|title=Survival Guide for Apollo Workstations|author=Tim Hunkler|date=July 1996|access-date=2022-10-13}}</ref> ]s and the Nortel Networks ] telephone central office switch. More recently{{when|date=December 2022}}, the 68030 core has also been adapted by ] into a ] for embedded applications.

] has used the 68EC030 in certain models of their 9300 Series digital oscilloscopes including “C” suffix models{{R|ReferenceA|p=87-88}} and high performance 9300 Series models,<ref name="ReferenceA">LeCroy 1996 Test & Measurement Product Catalog, 9300 Series Hardware Options, Mega Waveform Processing, Pages 66-67</ref> along with the Mega Waveform Processing hardware option for 68020-based 9300 Series models.<ref name="ReferenceA"/>

==Variants==
The 68EC030 is a low cost version of the 68030, the difference between the two being that the 68EC030 omits the on-chip ] (MMU) and is thus essentially an upgraded 68020.

The 68EC030 was used as the CPU for the low-cost model of the ], and on a number of CPU accelerator cards for the ] line of computers. It was also used in the ] ] router, a small-to-medium enterprise computer internetworking appliance. Additionally it was also used as the primary processor in a number of ] Eagle mini-computers.

The 50&nbsp;MHz speed is exclusive to the ceramic ] package, the plastic '030 stopped at 40&nbsp;MHz.

==Technical data==
{| class="wikitable"
| CPU ] || 16, 20, 25, 33, 40, 50&nbsp;MHz, except for MC68EC030 available in 25 and 40&nbsp;MHz ||<ref name=m30/>
|-
| || Internal ] ||<ref name=m30>{{cite web|url=http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC68030|title=MC68030 Product Summary Page|date=2012|website=Freescale|archive-url=https://web.archive.org/web/20141006204732/http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MC68030|archive-date=October 6, 2014}}</ref>
|-
| Address bus || 32 bit ||<ref name=cw>{{cite web|url=http://www.cpu-world.com/CPUs/68030/index.html|website=cpu-world.com|title=Motorola 68030 (MC68030) microprocessor family|date=November 17, 2012}}</ref>
|-
| Data bus || 32 bit ||<ref name=cw/>
|-
| Cache || 256 bytes each for instruction and data, 16 lines of 4 entries of 4 bytes each, direct mapped ||<ref name=m30/><ref name="um"/>
|-
| || dynamic bus sizing ||<ref name=m30/>
|-
| || burst memory interface ||<ref name=m30/>
|-
| Performance || 18 MIPS @ 50&nbsp;MHz ||<ref name=m30/>
|}

== See also ==
* ]

==References==
{{Reflist}}

==External links==
*
*
*
*

{{Motorola processors}}
{{Authority control}}

]
]

Latest revision as of 16:14, 6 December 2024

32-bit microprocessor

Motorola 68030
General information
Launched1987
Designed byMotorola
Performance
Max. CPU clock rate16 MHz to 50 MHz
Data width32 bits
Address width32 bits
Cache
L1 cache256 bytes each for instruction and data, 16 lines of 4 entries of 4 bytes each, direct mapped
Architecture and classification
Instruction setMotorola 68000 series
Physical specifications
Transistors
  • 273,000
Package
Products, models, variants
Variant
  • 68EC030
History
PredecessorMotorola 68020
SuccessorMotorola 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, 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 typically increases performance by ≈5% over the 68020, 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.

Usage

The 68030 was used in many models of the Apple Macintosh II and Commodore Amiga series of personal computers, NeXT Cube, later Alpha Microsystems multiuser systems, and some descendants of the Atari ST line such as the Atari TT and the Atari Falcon. It was also used in Unix workstations such as the Sun Microsystems Sun-3x line of desktop workstations (the earlier "sun3" used a 68020), Apollo Computer's DN3500 and DN4500 workstations, laser printers and the Nortel Networks DMS-100 telephone central office switch. More recently, the 68030 core has also been adapted by Freescale into a microcontroller for embedded applications.

LeCroy has used the 68EC030 in certain models of their 9300 Series digital oscilloscopes including “C” suffix models and high performance 9300 Series models, along with the Mega Waveform Processing hardware option for 68020-based 9300 Series models.

Variants

The 68EC030 is a low cost version of the 68030, the difference between the two being that the 68EC030 omits the on-chip memory management unit (MMU) and is thus essentially an upgraded 68020.

The 68EC030 was used as the CPU for the low-cost model of the Amiga 4000, and on a number of CPU accelerator cards for the Commodore Amiga line of computers. It was also used in the Cisco Systems 2500 Series router, a small-to-medium enterprise computer internetworking appliance. Additionally it was also used as the primary processor in a number of Alpha Microsystems Eagle mini-computers.

The 50 MHz speed is exclusive to the ceramic PGA package, the plastic '030 stopped at 40 MHz.

Technical data

CPU clock rate 16, 20, 25, 33, 40, 50 MHz, except for MC68EC030 available in 25 and 40 MHz
Internal split-cache modified Harvard architecture
Address bus 32 bit
Data bus 32 bit
Cache 256 bytes each for instruction and data, 16 lines of 4 entries of 4 bytes each, direct mapped
dynamic bus sizing
burst memory interface
Performance 18 MIPS @ 50 MHz

See also

References

  1. ^ "MC68030 Product Summary Page". Freescale. 2012. Archived from the original on October 6, 2014.
  2. ^ "MC68030 User Manual" (PDF). Motorola. 1990.
  3. 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 to port PMMU specific code to the 68030.
  4. Tim Hunkler (July 1996). "Survival Guide for Apollo Workstations". Retrieved October 13, 2022.
  5. ^ LeCroy 1996 Test & Measurement Product Catalog, 9300 Series Hardware Options, Mega Waveform Processing, Pages 66-67
  6. ^ "Motorola 68030 (MC68030) microprocessor family". cpu-world.com. November 17, 2012.

External links

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