The Commodore Amiga 500 Plus, (A500+) is a enhanced version of the original Amiga 500. Commodore is the commonly used name for Commodore International, a West Chester, Pennsylvania based electronics company who was a major player in the 1980s home computer field. ... In computing, Amiga is a range of home/personal computers primarily using the Motorola 68000 processor family, whose development started in 1982, initially as a game machine. ... The A500, also known as the Amiga 500, was the first low-end Commodore Amiga 16-bit multimedia home/personal computer model. ...

The A500+ featured:

• Motorola 68000 CPU running at 7.09 MHz (PAL) / 7.16 MHz (NTSC), like its predecessor.
• 1MB of Chip RAM
• Kickstart 2.04 (v37.175)
• Workbench 37.67 (release 2.04)
• Built in battery backed RTC (Real Time Clock) (lacking in the A500)
• Full ECS Chipset including new version of the Agnus chip and Denise chip.

The A500+ was officially introduced in 1992, however the plus was released in near secrecy, masquerading as A500 units in late 1991. It has been speculated that Commodore had already sold out the remaining stocks of A500s, before the run up to the profitable Christmas sales period. In order to make enough A500's before Christmas, Commodore used stocks of the new 8A revision motherboards destined for the A500+. Many users were unaware that they were purchasing anything other than a standard A500. Although the A500+ was an improvement to the A500, it was minor, making it the shortest lived Amiga model. It was discontinued and replaced by the Amiga 600 in summer 1992. The Motorola 68000 is a CISC microprocessor, the first member of a successful family of microprocessors from Motorola, which were all mostly software compatible. ... CPU can stand for: in computing: Central processing unit in journalism: Commonwealth Press Union in law enforcement: Crime prevention unit in software: Critical patch update, a type of software patch distributed by Oracle Corporation in Macleans College is often known as Ash Lim. ... Chip RAM is the name given to RAM with dual port access in the Amiga computer that could be accessed by the custom chipset as well as the CPU. The custom chipset was able to perform DMA transfers to and from this RAM, and would even lock-out the CPU... The term Kickstart can refer to: The bootstrap for computers running AmigaOS or some Linux distibutions. ... AmigaOS is the default native operating system of the Amiga and AmigaOne personal computers. ... Enhanced Chip Set (ECS) is the name used for the enhanced version of the Amiga computers original chipset (OCS). ... Agnus is the name of a range of custom chips that were featured in the Amiga home computer. ... The Commodore Amiga Original Chip Set (OCS) is a chipset used in the earliest Amiga computers, from the 1985 Amiga 1000 onwards. ... 1992 is a leap year starting on Wednesday of the Gregorian calendar. ... 1991 is a common year starting on Tuesday of the Gregorian calendar. ... The A600, also known as the Amiga 600, was an Amiga personal computer launched in March 1992. ... 1992 is a leap year starting on Wednesday of the Gregorian calendar. ...

Commodore created the A500+ for a couple of reasons. The first was cost reduction; minor changes were made to the motherboard to make it cheaper to produce. It was also so that Commodore could introduce the new version of the Amiga Operating system, 2.04. AmigaOS is the default native operating system of the Amiga and AmigaOne personal computers. ...

Due to the new Kickstart, quite a few popular games failed to work on the A500+, and a lot of people took them back to dealers demanding an original Kickstart 1.3 A500. This problem was solved by third-parties who produced Kickstart ROM switching boards, that could allow the A500+ to be downgraded to Kickstart 1.2 or 1.3. It also encouraged game developers into better programming habits, something that was essential as when the A500+ was launched, Commodore already had plans for the introduction of the next-generation A1200 computer. The term Kickstart can refer to: The bootstrap for computers running AmigaOS or some Linux distibutions. ... The term Kickstart can refer to: The bootstrap for computers running AmigaOS or some Linux distibutions. ... The A500, also known as the Amiga 500, was the first low-end Commodore Amiga 16-bit multimedia home/personal computer model. ... Rom is also the name of a toy and comic book character Rom (Spaceknight). ... The Amiga 1200, or A1200, was Commodore Internationals third-generation Amiga computer, aimed at the home market. ...