Philips :YES

Philips :YES

Type	Personal computer
Release date	1985
Operating system	DOS Plus, MS-DOS, Concurrent DOS
CPU	Intel 80186 @ 8 MHz
Memory	128KiB to 640 KiB

The Philips :YES was a home computer/personal computer released by Philips in 1985. It wasn't 100% compatible with the IBM PC, a reason given for its commercial failure. The system was sold in limited quantities only.

Technical specifications

• Microprocessor: Intel 80186 @ 8 MHz
• ROM: 192 KiB
• RAM: 128 to 640 KiB
• Keyboard: mechanical, with 93 keys
• Operating system: DOS Plus, MS-DOS, Concurrent DOS
• Storage: two 3½ in drives, 720 KiB each. One or two optional external 3½ in or 5¼ in drives.^[1]
• Video modes:^[2]
  • A0: Text, 40 columns × 25 rows, 8 colours
  • A1: Text, 80 columns × 25 rows, 8 colours
  • A2: Text, 80 columns × 25 rows, 2 colours + intensity
  • G0: 160 × 252 pixels, 16 colours
  • G1: 640 × 352 pixels, 2 colours + intensity
  • G2: 320 × 252 pixels, 16 colours
  • G3: 640 × 252 pixels, 4 colours

The built-in graphics hardware supported composite video output. An additional video module allowed output to TTL monochrome monitors, colour monitors or SCART televisions.^[3]

Video RAM was shared with system RAM. Before using graphics modes, memory had to be allocated for them with the GRAPHICS or GRCHAR commands.^[4]

An expansion card (the Professional Expansion Board) provided:^[5]

• Extra RAM.
• A SASI hard drive interface.^[6]
• A mouse interface.
• A battery-backed real time clock.

References

1. :YES Philips Personal Computer - User Guide. Philips. 1985. p. 7-1.
2. :YES Philips Personal Computer - Getting Started. Philips. 1985. p. C-1.
3. :YES Philips Personal Computer - Getting Started. Philips. 1985. pp. 1–15,1–16,C–1.
4. :YES Philips Personal Computer - User Guide. Philips. 1985. p. 5-1.
5. :YES Philips Personal Computer - Getting Started. Philips. 1985. p. 1-7.
6. :YES Philips Personal Computer - User Guide. Philips. 1985. p. 8-1.

External links

• Computermuseum München: Philips :Yes (in German)
• Allard's Computer Museum Groningen: :YES Philips PC, archived from the original on 2008-11-06, retrieved 2013-12-14 (with pictures)