In the early 1990s, CBM continued selling Amigas with 7 – 14 MHz 68000-family CPUs ( even though Amiga 3000 with 25 MHz 68030 was in the market by that time ), when PCs with 33 MHz 486s, high-color graphics cards and SoundBlaster ( or compatible ) sound cards offered comparable, and eventually higher, performance, albeit at higher prices.

It was also available on some non-IBM compatible machines such as Motorola 68k-based Apollo ( 68020 ) and Amiga 3000 ( 68030 ) workstations, the short-lived AT & T Hobbit and later PowerPC based BeBox.

A lower cost version of the 68030, the Motorola 68EC030, was also released, lacking the on-chip MMU.

When used with a 68020 bus, the 68030 did not differentiate itself in performance from the 68020 that it was derived from.

The 68030 was used in many models of the Apple Macintosh II and Commodore Amiga series of personal computers, NeXT Cube, Sun Microsystems Sun 3 / 80 desktop workstation ( a member of the " sun3x " architecture, where the earlier " sun3 " used a 68020 ), later Alpha Microsystems multiuser systems, and some descendants of the Atari ST line such as the Atari TT and the Atari Falcon.

It thus included all of the functionality that previously required external chips, namely the FPU and Memory Management Unit ( MMU ), which was added in the 68030.

Similarly, the Motorola 68030 was a process improvement on the 68020 with the MMU and a small data cache ( 256 bytes ) moved on-chip.

The 68030 was available in speed ratings up to 50 MHz.

The NeXT Computer was based on the new 25 MHz Motorola 68030 central processing unit ( CPU ).

When attempting to increase processing power, Apple was hampered by the overheating problems of the 68040 ; this resulted in the 100-series PowerBook being stuck with the aging 68030 which could not compete with newer-generation Intel 80486-based PC laptops introduced in 1994.

The 68010 was a revised version of the 68000 with minor modifications to the core, and likewise the 68030 was a revised 68020 with some more powerful features, none of them significant enough to classify as a major upgrade to the core.

The Macintosh II was followed by a series of related models including the Macintosh IIx and Macintosh IIfx, all of which used the Motorola 68030 processor.

In the naming scheme used at that time, Apple typically indicated the presence of a 68030 processor by adding the letter " x " to a model's name, but when the Macintosh SE was updated to the 68030, this posed an awkward problem, as Apple was not willing to name their new computer the " Macintosh SEx ".

Possible upgrades include 25, 33, 40 or 50 MHz Daystar 68030 boards, a couple of different 68040 upgrades, and two PowerPC 601 upgrade cards running at either 66 MHz or 100 MHz, exclusively from Daystar Digital, which was bought by XLR8, which still holds the Daystar product logo and name for its line of products.

The A3000UX's 68030 was noticeably underpowered compared to most of its RISC-based competitors.

Except for the original Mac II which launched the line with a 68020 clocked at 16MHz, they exclusively used the Motorola 68030 microprocessor, even after the Motorola 68040 was introduced.

The Macintosh LC and Performa lines continued the II's 68030 technology long after the 68040 was introduced and the PowerBook continued to use the ' 030 into the Power Macintosh era.

In 1991 was succeeded by the LC II, which replaced the LC's Motorola 68020 processor with a 68030.

In order to stop continual system crashes caused by this issue, System 6 and earlier running on a 68020 or a 68030 would force the CPU into 24-bit mode, and would only recognize and address the first 8 megabytes of RAM, an obvious flaw in machines whose hardware was wired to accept up to 128MB RAM – and whose product literature advertised this capability.

It is the successor to the Motorola 68010 and is succeeded by the Motorola 68030.

It is the successor to the 68030 and is followed by the 68060.

The successor model LC II's 68030 has a built-in MMU.

The 68020 still lacked certain important features offered by the next successor in the 68000 line, the new 68030.

Early CPU accelerator cards feature full 32-bit CPUs of the 68000 family such as the Motorola 68020 and Motorola 68030, almost always with 32-bit memory and usually with FPUs and MMUs or the facility to add them.

Motorola 68030 microprocessor

The Motorola 68030 is a 32-bit microprocessor in Motorola's 68000 family.

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Motorola had intended the EC variant for embedded use, but embedded processors during the 68040's time did not need the power of the 68040, so EC variants of the 68020 and 68030 continued to be common in designs.

** Motorola 68030

# REDIRECT Motorola 68030

Despite this, unofficial CPU upgrades include the Motorola 68010, 68020 ( at up to 25 MHz ), and 68030 ( at up to 50 MHz ).

The 68020 ( and 68030 ) had a proper three-stage pipeline.

As a microarchitecture, the 68030 is basically a 68020 core with an additional data cache and a process shrink.

The integration of the MMU made it more cost-effective than the 68020 with an external MMU ; it also allowed the 68030 to access memory one cycle faster than a 68020 / 68851 combo.

However, the 68030 provides an additional synchronous bus interface which, if used, accelerates memory accesses up to 33 % compared to an equally clocked 68020.

While it delivered over four times the per-clock performance of the old-when-released 68020 and 68030, the chip's complexity and power requirements came from a large die and large caches.

The jump from the 68000 / 68010 to the 68020 / 68030, however, represented a major overhaul, with too many individual changes to list here.

Later models were based on 68010, 68020, 68030 and 68040 processors which had native support for virtual memory.

A typical system could have between 2 MiB and 32 MiB of memory, a 76 MB, 150 MB or 330 MB ( very occasionally 660 MB ) hard disk, and 32-bit 68020 or 68030 processor running at 12 MHz to 33 MHz, depending on model.

The general rule of thumb is a 286, 386SX, 68000 or low-end 68020 / 68030 ( e. g. Atari, Mac LC ) system ( using a 16 bit wide data bus ) would require two 30-pin SIMMs for a memory bank.

All versions of this emulator emulated the " user " subset of the 68EC040 instruction set with a 68020 / 68030 exception stack frame.

It replaced the 16 MHz Motorola 68020 CPU and 68881 FPU of the II with a 68030 CPU and 68882 FPU ( running at the same clock speed ); and the 800 KB floppy drive with the 1. 44 MB SuperDrive ( in fact, it was the first Mac to have one ).