Amiga Sidecar

Last updated
Amiga 1000 with external A1010 floppy disk drive and A1060 Sidecar Amiga 1000 system with sidecar.jpg
Amiga 1000 with external A1010 floppy disk drive and A1060 Sidecar

The Commodore A1060 Sidecar is an expansion hardware device developed by Commodore and released in 1986 for the Amiga 1000 computer. It is an IBM Personal Computer XT-clone in an expansion case which connects to the expansion bus on the right side of the Amiga 1000 computer. It sits beside the computer similar to a motorcycle's sidecar.

Contents

The Sidecar is built around an Intel 8088 processor. All I/O from the PC side is performed by the Amiga. Software was included to allow data to be exchanged easily between the PC and the Amiga side of the system. The Sidecar was available with an internal hard disk accessible from both the MS-DOS and AmigaOS environments. This was the first hard drive produced by Commodore for the Amiga.

Video display and user input are performed through the Amiga's monitor, keyboard, and mouse. This allows the user to control both computers simultaneously.

Technical specifications

The Amiga Sidecar is a complete IBM PC XT system, with the exception of I/O devices and operations (which are handled by the Amiga).

History

Early in its life, the Amiga was strong in entertainment and graphics software but lacked general productivity software such as word processors, spreadsheets and database software. These are the areas where the de facto business standard IBM PC excelled. Commodore's intent was to let the Amiga take advantage of PC compatibility to shore up its weakness in this category of software.

Bruce F. Webster wrote in the October 1985 issue of BYTE , after seeing the Amiga for the first time: [2]

The 86-pin [expansion port] gives whatever is sitting out there complete control of the machine (if it wants control). The disk-controller hardware can already handle 5¼-inch drives ... the keyboard is sufficiently populated [to] support most MS-DOS programs, and the screen resolutions (320 by 200, etc.) are, by an amazing coincidence, identical to those for most IBM graphics cards. How hard would it be to build a box with the necessary CPU and ROMs that would turn the Amiga into an IBM-compatible machine? Not very hard, I would think—certainly not as hard as it has been for the folks at Dayna Communications to get MacCharlie, which attempts to get the Mac run MS-DOS software, up and running.

Webster, in September 1986, noted the Sidecar's announcement as fulfilling his prediction. [3] Jerry Pournelle that month named the Sidecar his "number one pick of Spring COMDEX, stating that "it was eerie to watch Flight Simulator running as if on a PC and still see the famous Amiga bouncing ball in the background and a word-processing program running in the foreground". [4]

The Sidecar was developed by Commodore Germany, as was all of the Commodore PC-architecture based development. It was relatively expensive and it required a non-trivial amount of desktop space compared to the Amiga 1000 by itself. The device was also taller than the Amiga 1000, which made it seem even more aesthetically disconnected from the main system.

Besides the high price and the aesthetic issues, other factors contributed to the Sidecar's lack of adoption. The Amiga 2000 provided internal expansion slots, allowing the optional Bridgeboard card to replace the functionality of the Sidecar without needing a bulky external chassis. The popular Amiga 500 could not be used with the Sidecar at all, due to the expansion slot on the A500 residing on the left side of the chassis, as opposed to the right side on the A1000. Also, decent business and productivity software began to be released for AmigaOS, reducing the need to run MS-DOS applications on the Amiga.

This concept was continued in the later Amiga 2000 unit, containing four ISA slots intended for PC emulation expandability. Two slots were in-line with the Amiga Zorro II bus to allow installation of a Bridge board which, like the Sidecar, provided the core chipset of a PC on an expansion card, connected to both the Amiga and PC bus.

See also

Related Research Articles

<span class="mw-page-title-main">Amiga</span> Family of personal computers sold by Commodore

Amiga is a family of personal computers produced by Commodore from 1985 until 1994, with production by others for a number of years afterwards. The original model is one of a number of mid-1980s computers with 16- or 16/32-bit processors, 256 KB or more of RAM, mouse-based GUIs, and significantly improved graphics and audio compared to previous 8-bit systems. These systems include the Atari ST—released earlier the same year—as well as the Macintosh and Acorn Archimedes. Based on the Motorola 68000 microprocessor, the Amiga differs from its contemporaries through the inclusion of custom hardware to accelerate graphics and sound, including sprites and a blitter, and a pre-emptive multitasking operating system called AmigaOS.

<span class="mw-page-title-main">Industry Standard Architecture</span> Internal expansion bus in early PC compatibles

Industry Standard Architecture (ISA) is the 16-bit internal bus of IBM PC/AT and similar computers based on the Intel 80286 and its immediate successors during the 1980s. The bus was (largely) backward compatible with the 8-bit bus of the 8088-based IBM PC, including the IBM PC/XT as well as IBM PC compatibles.

<span class="mw-page-title-main">IBM Personal Computer</span> Personal computer model released in 1981

The IBM Personal Computer is the first microcomputer released in the IBM PC model line and the basis for the IBM PC compatible de facto standard. Released on August 12, 1981, it was created by a team of engineers and designers at International Business Machines (IBM), directed by William C. Lowe and Philip Don Estridge in Boca Raton, Florida.

<span class="mw-page-title-main">Tandy 1000</span> IBM PC compatible home computer system

The Tandy 1000 was the first in a series of IBM PC compatible home computers produced by the Tandy Corporation, sold through its Radio Shack and Radio Shack Computer Center stores. Introduced in 1984, the Tandy 1000 line was designed to offer affordable yet capable systems for home computing and education. Tandy-specific features, such as enhanced graphics, sound, and a built-in joystick port, made the computers particularly attractive for home use.

<span class="mw-page-title-main">IBM PC–compatible</span> Computers similar to the IBM PC and its derivatives

"IBM PC–compatible" refers to a class of computers that are technically compatible with the 1981 IBM PC and subsequent XT and AT models from computer giant IBM. Like the original IBM PC, they use an Intel x86 central processing unit and are capable of using interchangeable commodity hardware, such as expansion cards. Initially such computers were referred to as PC clones, IBM clones or IBM PC clones, but the term "IBM PC compatible" is now a historical description only, as the vast majority of microcomputers produced since the 1990s are IBM compatible. IBM itself no longer sells personal computers, having sold its division to Lenovo in 2005. "Wintel" is a similar description that is more commonly used for modern computers.

<span class="mw-page-title-main">Expansion card</span> Circuit board for connecting to a computer system to add functionality

In computing, an expansion card is a printed circuit board that can be inserted into an electrical connector, or expansion slot on a computer's motherboard to add functionality to a computer system. Sometimes the design of the computer's case and motherboard involves placing most of these slots onto a separate, removable card. Typically such cards are referred to as a riser card in part because they project upward from the board and allow expansion cards to be placed above and parallel to the motherboard.

<span class="mw-page-title-main">Amiga 3000</span> Personal computer by Commodore

The Amiga 3000, or A3000, is a personal computer released by Commodore in June 1990. It is the successor to the Amiga 2000 and its upgraded model Amiga 2500 with more processing speed, improved graphics, and a new revision of the operating system.

<span class="mw-page-title-main">Amiga 2000</span> Personal computer from Commodore, 1987

The Amiga 2000 (A2000) is a personal computer released by Commodore in March 1987. It was introduced as a "big box" expandable variant of the Amiga 1000 but quickly redesigned to share most of its electronic components with the contemporary Amiga 500 for cost reduction. Expansion capabilities include two 3.5" drive bays and one 5.25" bay that could be used by a 5.25" floppy drive, a hard drive, or CD-ROM once they became available.

<span class="mw-page-title-main">Amiga 4000</span> 1992 personal computer

The Amiga 4000, or A4000, from Commodore is the successor of the Amiga 2000 and Amiga 3000 computers. There are two models: the A4000/040 released in October 1992 with a Motorola 68040 CPU, and the A4000/030 released in April 1993 with a Motorola 68EC030.

<span class="mw-page-title-main">Tandy 2000</span> Personal computer by Radio Shack

The Tandy 2000 is a personal computer introduced by Radio Shack in September 1983 based on the 8 MHz Intel 80186 microprocessor running MS-DOS. By comparison, the IBM PC XT used the older 4.77 MHz Intel 8088 processor, and the IBM PC/AT would later use the newer 6 MHz Intel 80286. Due to the 16-bit data bus and more efficient instruction decoding of the 80186, the Tandy 2000 ran significantly faster than other PC compatibles, and slightly faster than the PC AT. The Tandy 2000 was the company's first computer built around an Intel x86 series microprocessor; previous models used the Zilog Z80 and Motorola 6809 CPUs.

<span class="mw-page-title-main">Compaq Portable</span> Early portable computer

The Compaq Portable is an early portable computer which was one of the first IBM PC compatible systems. It was Compaq Computer Corporation's first product, to be followed by others in the Compaq Portable series and later Compaq Deskpro series. It was not simply an 8088-CPU computer that ran a Microsoft DOS as a PC "work-alike", but contained a reverse-engineered BIOS, and a version of MS-DOS that was so similar to IBM's PC DOS that it ran nearly all its application software. The computer was also an early variation on the idea of an "all-in-one".

<span class="mw-page-title-main">Rainbow 100</span> DEC microcomputer

The Rainbow 100 is a microcomputer introduced by Digital Equipment Corporation (DEC) in 1982. This desktop unit had a monitor similar to the VT220 and a dual-CPU box with both 4 MHz Zilog Z80 and 4.81 MHz Intel 8088 CPUs. The Rainbow 100 was a triple-use machine: VT100 mode, 8-bit CP/M mode, and CP/M-86 or MS-DOS mode using the 8088. It ultimately failed to succeed in the marketplace which became dominated by the simpler IBM PC and its clones which established the industry standard as compatibility with CP/M became less important than IBM PC compatibility. Writer David Ahl called it a disastrous foray into the personal computer market. The Rainbow was launched along with the similarly packaged DEC Professional and DECmate II which were also not successful. The failure of DEC to gain a significant foothold in the high-volume PC market would be the beginning of the end of the computer hardware industry in New England, as nearly all computer companies located there were focused on minicomputers for large organizations, from DEC to Data General, Wang, Prime, Computervision, Honeywell, and Symbolics Inc.

The Amiga is a family of home computers that were designed and sold by the Amiga Corporation from 1985 to 1994.

The Amiga computer can be used to emulate several other computer platforms, including legacy platforms such as the Commodore 64, and its contemporary rivals such as the IBM PC and the Macintosh.

<span class="mw-page-title-main">Leading Edge Model D</span> PC marketed by Leading Edge Hardware

The Leading Edge Model D is an IBM clone first released by Leading Edge Hardware in July 1985. It was initially priced at $1,495 and configured with dual 5.25" floppy drives, 256 KB of RAM, and a monochrome monitor. It was manufactured by South Korean conglomerate Daewoo and distributed by Canton, Massachusetts-based Leading Edge. Engineer Stephen Kahng spent about four months designing the Model D at a cost of $200,000. Kahng later became CEO of Macintosh clone maker Power Computing.

The Z-100 computer is a personal computer made by Zenith Data Systems (ZDS). It was a competitor to the IBM PC.

The Commodore PC compatible systems are a range of IBM PC compatible personal computers introduced in 1984 by home computer manufacturer Commodore Business Machines.

IrisVision is an expansion card developed by Silicon Graphics for IBM compatible PCs in 1991 and is one of the first 3D accelerator cards available for the high end PC market. IrisVision is an adaptation of the graphics pipeline from the Personal IRIS workstation to the Micro Channel architecture and consumer ISA buses of most modern PCs of the day. It has the first variant of IRIS GL ported to the PC, predating OpenGL.

<span class="mw-page-title-main">Olivetti M24</span> Computer sold by Olivetti in 1983 using the Intel 8086 CPU

The Olivetti M24 is a computer that was sold by Olivetti in 1983 using the Intel 8086 CPU.

<span class="mw-page-title-main">IBM Personal Computer XT</span> Personal computer model released in 1983

The IBM Personal Computer XT is the second computer in the IBM Personal Computer line, released on March 8, 1983. Except for the addition of a built-in hard drive and extra expansion slots, it is very similar to the original IBM PC model 5150 from 1981.

References

  1. ↑ Halfhill, Tom (August 1986). "16-bit Explosion". Compute!. Retrieved 6 June 2017.
  2. ↑ Webster, Bruce (October 1985). "Commodore's Coup". BYTE. p. 147. Retrieved 27 October 2013.
  3. ↑ Webster, Bruce F. (September 1986). "Two Fine Products". BYTE. p. 346.
  4. ↑ Pournelle, Jerry (September 1986). "A Busy Day". BYTE. p. 321.


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.