The Commodore 65 (also known as the C64DX, not to be confused with the Commodore DX-64 portable unit) was a prototype computer created by Fred Bowen and others at Commodore Business Machines (CBM) (part of Commodore International) in 1990–91. The project was cancelled by CEO Irving Gould. The Commodore SX-64, also known as the Executive 64, was a portable, briefcase/suitcase-size luggable version of the popular Commodore 64 home computer and holds the distinction of being the first full-color portable computer. ... Prototypes or prototypical instances combine the most representative attributes of a category. ... Commodore is the commonly used name for Commodore International, a West Chester, Pennsylvania based electronics company who was a vital player in the home/personal computer field in the 1980s. ... This article is about the year. ... 1991 (MCMXCI) is a common year starting on Tuesday of the Gregorian calendar. ...

The C65 was an improved version of the Commodore 64, and it was meant to be backwards-compatible with the older computer, while still providing a number of advanced features close to that of the Amiga. When Commodore International was liquidated in 1994, a number of prototypes were sold on the open market, and thus a few people actually own a Commodore 65. Guesstimates as to the actual number of machines found on the open market range from 50 to 2000 pieces. Commodore 64 (1982) The Commodore 64 (C64, CBM 64/CBM64, C=64) is a home computer with 64 kilobytes of RAM that was popular in the 1980s. ... The Amiga is a family of home/personal computers originally developed by Amiga Corporation as an advanced game console. ... 1994 (MCMXCIV) was a common year starting on Saturday of the Gregorian calendar, and was designated the International year of the Family. ... Prototypes or prototypical instances combine the most representative attributes of a category. ... Guesstimate is a word used to describe a process of estimation which includes an element of guesswork. ...

As the C65 project were cancelled, the final 8-bit offering from CBM remained the triple-mode, 1–2 MHz, 128 KB (expandable), C64-compatible Commodore 128 of 1985. 8-bit refers to the number of bits used in the data bus of a computer. ... MegaHertz (MHz) is the name given to one million (106) Hertz, a measure of frequency. ... A kilobyte (derived from the SI prefix kilo-) is a unit of information or computer storage equal to either 1024 or 1000 bytes. ... The Commodore 128 is a home/personal computer, also known as the C128. ... This article is about the year. ...

Main C65 features

• The CPU named CSG 4510 R3 (codenamed Victor) was a custom CSG* 65CE02 (a MOS 6502 derivative), combined with two MOS 6526 complex interface adapters (CIAs)
• A new VIC-III graphics chip named CSG* 4567 R5 (codenamed Bill), capable of producing 256 colors from a palette of 4096 colors; available modes include 320×200×256,  640×200×256,  640×400×16,  1280×200×16, and 1280×400×4  (X×Y×colordepth i.e. number of colors/bit planes)
• Two CSG* 8580R5 SID sound chips producing stereo sound (the C64 had one SID)
• 3.54  MHz clock frequency (the C64 ran at 1 MHz)
• 128 KB RAM, expandable to 8 MB using a RAM expansion port similar to that of the Commodore Amiga 500
• Heavily improved BASIC: Commodore BASIC 10.0 (the C64 had the relatively feature-weak BASIC 2.0)
• Proposed feature, not implemented in the final prototype: one internal 3½" floppy disk drive

(* CSG = Commodore Semiconductor Group, previously known as MOS Technology, Inc.)

Intel 80486DX2 microprocessor in a ceramic PGA package A central processing unit (CPU), or sometimes simply processor, is the component in a digital computer that interprets and executes instructions and data contained in software. ... The MOS Technology 4510 was the MOS-manufactured microcomputer chip used in the (unreleased) Commodore 65 8-bit home/personal computer. ... MOS Technology, Inc. ... The MOS Technology 6502 is an 8-bit microprocessor designed by MOS Technology in 1975. ... Pin configuration of the 6526 CIA The 6526/8520 Complex Interface Adapter (CIA) was an integrated circuit made by MOS Technology. ... Early graphics chips were simple video adapters for generating text and computer graphics on a video computer display found in early computers and graphics cards. ... MOS Technology SIDs: The right image shows a 6581 from MOS Technology, at the time they were known as the Commodore Semiconductor Group (CSG) and the left image shows an 8580 from MOS Technology. ... A sound chip is an integrated circuit (i. ... Stereophonic sound, commonly called stereo, is the reproduction of sound, using two independent audio channels, through a pair of widely separated speaker systems, in such a way as to create a pleasant and natural impression of sound heard from various directions as in natural hearing. ... MegaHertz (MHz) is the name given to one million (106) Hertz, a measure of frequency. ... A kilobyte (derived from the SI prefix kilo-) is a unit of information or computer storage equal to either 1024 or 1000 bytes. ... Different types of RAM. From top to bottom: DIP, SIPP, SIMM 30 pin, SIMM 72 pin, DIMM, RIMM RAM redirects here. ... A megabyte is a unit of information or computer storage equal to one million bytes. ... Commodore BASIC is the dialect of BASIC used in Commodore Internationals 8-bit home computer line, stretching from the PET of 1977 to the C128 of 1985. ... A floppy disk is a data storage device that is composed of a ring of thin, flexible (i. ... MOS Technology, Inc. ...

External links

• C65 page at 'The Secret Weapons of Commodore' website – By Cameron Kaiser and The Commodore Knowledge Base
• FTP directory for the C65 at FTP.FUNET.FI

List of Commodore microcomputers MOS Technology 6502-based (8-bit):   MOS/CBM KIM-1 | PET/CBM | CBM-II (aka B/P series) | VIC-20/VC-20 | C64 | SX-64 | C16 & 116 | Plus/4 | C128 Cameron Kaiser is a prominent member of the Internet Gopher community. ... Image File history File links CBM_Logo. ... Commodore is the commonly used name for Commodore International, a West Chester, Pennsylvania based electronics company who was a vital player in the home/personal computer field in the 1980s. ... The MOS Technology 6502 is an 8-bit microprocessor designed by MOS Technology in 1975. ... 8-bit refers to the number of bits used in the data bus of a computer. ... The KIM-1, short for Keyboard Input Monitor, was a small 6502-based microcomputer kit developed and produced by MOS Technology, Inc. ... The PET (Personal Electronic Transactor) was a home-/personal computer produced by Commodore starting in the late 1970s. ... The Commodore CBM-II series was a short-lived series of personal computers from Commodore International, intended as a follow-on to the Commodore PET series, released in 1982. ... VIC-20 with accessories. ... Commodore 64 (1982) The Commodore 64 (C64, CBM 64/CBM64, C=64) is a home computer with 64 kilobytes of RAM that was popular in the 1980s. ... The Commodore SX-64, also known as the Executive 64, was a portable, briefcase/suitcase-size luggable version of the popular Commodore 64 home computer and holds the distinction of being the first full-color portable computer. ... The Commodore 16 was a home computer made by Commodore with a 6502-compatible 7501 CPU, released in 1984. ... Commodore Plus/4. ... The Commodore 128 is a home/personal computer, also known as the C128. ... M68K-based (16/32-bit):   Amiga 1000 | Amiga 500 | Amiga 2000 | Amiga 500+ | Amiga 2500 | Amiga 3000, UX, T | Amiga 600 | Amiga 1200 | Amiga 4000 The Motorola 68000 is a CISC microprocessor, the first member of a successful family of microprocessors from Motorola, which were all mostly software compatible. ... In computer science, 16-bit is an adjective used to describe integers that are at most two bytes wide, or to describe CPU architectures based on registers, address buses, or data buses of that size. ... 32-bit is a term applied to processors, and computer architectures which manipulate the address and data in 32-bit chunks. ... This page is about a computer. ... Missing image A500 The A500, also known as the Amiga 500, was the first low-end Commodore Amiga 16_bit multimedia home/personal computer model. ... The A2000, also known as the Commodore Amiga 2000, is the high-end Amiga personal computer that was released in 1987 at the same time as the low-end high-volume model A500. ... The Commodore Amiga 500 Plus, (A500+) is a enhanced version of the original Amiga 500. ... The Amiga 2500, also known as the A2500, was an enhanced version of the Commodore Amiga 2000. ... The A3000, also known as the Commodore Amiga 3000, was a much more serious proposition to build a professional multimedia computer than the previous A2000 effort. ... The A3000UX is a model of the Amiga computer family that was released with Commodore Amiga Unix installed instead of AmigaOS, a full port of AT&T Unix System V Release 4. ... The Amiga 3000T is the tower version of the Commodore Amiga 3000. ... The A600, also known as the Amiga 600 (codenamed June Bug after a B-52s song), was an Amiga personal computer launched in March 1992. ... The Amiga 1200, or A1200, was Commodore Internationals third-generation Amiga computer, aimed at the home market. ... The A4000, or Commodore Amiga 4000, was the successor of the A2000 and A3000 computers. ...

(list of released computers)