|Operating system||DOS Plus, MS-DOS, Concurrent DOS|
|CPU||Intel 80186 @ 8 MHz|
|Memory||128 KiB to 640 KiB|
The Philips :YES was a home computer/personal computer released by Philips Austria, in 1985. It was not 100% compatible with the IBM PC, a reason given for its commercial failure. The system was sold in limited quantities only.
- Microprocessor: Intel 80186 @ 8 MHz
- ROM: 192 KiB
- RAM: 128 to 640 KiB
- Keyboard: mechanical, with 93 keys
- Operating system: DOS Plus (in 64 KiB ROM), MS-DOS, Concurrent DOS
- Storage: two 3½-inch drives, 720 KiB each. One or two optional external 3½-inch or 5¼-inch drives.
- Video modes:
- 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 × 252 pixels, 2 colours + intensity
- G2: 320 × 252 pixels, 16 colours
- G3: 640 × 252 pixels, 4 colours
Video RAM was shared with system RAM. Before using graphics modes, memory had to be allocated for them with the GRAPHICS or GRCHAR commands.
An expansion card (the Professional Expansion Board) provided:
- Extra RAM.
- A SASI/SCSI hard drive interface.
- A mouse interface.
- A battery-backed real time clock.
Operating system versions
Known operating systems adapted for the Philips :YES include:
- DOS Plus 1.? in ROM (with BDOS 4.1). The BDOS in ROM does not implement the S_OSVER call, which would have returned the version number to display.
- DOS Plus 1.1 on disk (with BDOS 4.1)
- DOS Plus 1.2 on disk (with BDOS 4.1)
- DOS Plus 2.1 on disk (with BDOS 5.0)
- :YES Philips Personal Computer - User Guide. Philips. 1985. p. 7-1.
- :YES Philips Personal Computer - Getting Started. Philips. 1985. p. C-1.
- :YES Philips Personal Computer - Getting Started. Philips. 1985. pp. 1–15, 1–16, C-1.
- :YES Philips Personal Computer - User Guide. Philips. 1985. p. 5-1.
- :YES Philips Personal Computer - Getting Started. Philips. 1985. pp. 1–7.
- :YES Philips Personal Computer - User Guide. Philips. 1985. p. 8-1.
- :Yes product management (1985), README file for :YES Release 2 - DOS Plus 1.1 maintenance version (README.DOS file on maintenance disk), Philips Austria,
This file contains additional information on the use of DOS Plus 1.1 on the :YES Rel 1 and :YES Rel 2.
- 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)
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