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Atari PC5

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Atari PC5
Atari PC5
Specifications
ManufacturerAtari Corporation
TypeIBM PC/AT Compatible
Released1989
Discontinued1990
CPUIntel i386DX @ 16 MHz or 20 MHz (switchable to 8 MHz)
Memory2 MB or 4 MB RAM
Storage1ร— Epson SD-680L 5.25" 1.2 MB floppy drive; Seagate ST-277R 66 MB RLL hard drive; optional 1.44 MB 3.5" floppy
DisplayWestern Digital WD VGA Plus 16 (256 KB)
SoundPC Speaker
OS / FirmwareMS-DOS 3.3, GW-BASIC 3.2, Microsoft Windows/386 v2.0 (or Eurix Unix System V/386)
PredecessorAtari PC4
SuccessorAtari ABC 386

The Atari PC5 was Atari Corporation's most powerful entry in the original Atari PC line of IBM-compatible computers. Equipped with an Intel i386DX processor, it was the first 386-class system Atari produced and represented the high end of the Atari PC range before the company transitioned to the ABC (Atari Business Computer) series.

Overview

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Unlike the PC4, which used an Atari-designed motherboard, the PC5 was built around a third-party American Megatrends (AMI) 386XT Series-4 motherboard. This was a practical decision, as designing a 386-class motherboard in-house would have been costly. The AMI board featured a socket for an Intel 387 co-processor and supported CPU upgrades up to a 386DX-25.

The PC5 was notable for being the only Atari PC offered with a Unix-based operating system option: "Eurix", a German-localised version of Unix System V/386 Release 3.2, was available as an alternative to the standard MS-DOS and Windows/386 configuration. This positioned the PC5 as potentially suitable for business and technical workstation applications.

One downside of the AMI motherboard was its lack of onboard RAM expansion slots โ€” all memory was handled through a 32-bit memory expansion card, which was typically limited to 2 MB on the 16 MHz model and 4 MB on the 20 MHz model.

Specifications

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Component Details
Processor Intel i386DX, 16 MHz or 20 MHz (switchable to 8 MHz)
Co-processor socket Intel 80387
Motherboard American Megatrends (AMI) 386XT Series-4
RAM 2 MB (16 MHz model) or 4 MB (20 MHz model), via 32-bit memory expansion card
Graphics Western Digital WD VGA Plus 16, 256 KB VRAM
Storage 1ร— Epson SD-680L 5.25" 1.2 MB floppy drive; optional 1.44 MB 3.5" floppy; Seagate ST-277R 66 MB RLL hard drive
Hard drive/floppy controller Adaptec ACB-2372B floppy/hard drive controller
Multi-I/O Kouwell KW-524F Multi I/O card
Expansion PS/2-style expansion slots
Ports Monitor port, RS-232 serial port, Centronics parallel port, keyboard port
Keyboard Mitsumi KPQ-E99YC AT keyboard
Mouse Mitsumi 2-button serial mouse
Sound PC Speaker

Bundled Software

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Standard Configuration

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  • Microsoft MS-DOS 3.3
  • GW-BASIC 3.2
  • Microsoft Windows/386 Version 2.0

Alternative Configuration

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  • "Eurix" โ€” German-localised Unix System V/386 Release 3.2

Upgrades

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  • Intel 80387 co-processor (socket provided)
  • CPU upgrade to Intel 386DX-25 (the AMI Series-4 motherboard supports this)
  • Memory expansion via the 32-bit expansion card

Legacy

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The PC5 was the last model in the original numbered Atari PC series. Atari continued producing IBM-compatible computers with the ABC (Atari Business Computer) line, beginning with the ABC 286/30 in 1990 and culminating in the ABC 386 SX and DX models in 1991. These later systems used completely off-the-shelf components and bore little resemblance to the earlier, more distinctively Atari-branded PC line.

See Also

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