Dolch PAC 65

Dolch network analyzers and related portable computers gained popularity on Geekhack for the use of Cherry MX switches in the keyboards of some models. Personally, I didn’t care about the keyboard but found the computer more intriguing, so I picked this up. Eventual goals involve newer internals.


  • Identification: Dolch PAC 65
  • Motherboard: CI6BM PICMG SBC, with baby-AT backplane board
  • CPU*: Intel Pentium III, 500MHz (upgraded from Pentium II, 350MHz)
  • RAM*: 512MB (2x 256MB) PC100 SDRAM (originally 128MB)
  • Chipset: Intel 440BX
  • Video: integrated Trident Cyber9520 with interface for integrated LCD
  • Display: 12.1″ LCD, 800×600. LG LP121S2
  • Fixed storage*: 60GB Seagate IDE HDD (received unit with Quantum Fireball 6.4AT)
  • Removable storage: slimline 3.5″ 1.44MB floppy drive, slimline IDE CD-ROM drive
  • Sound: none integrated
  • Input: notebook-layout keyboard resembling period ThinkPad layout and pointing stick, which attaches to the front of the chassis forming a cover for the screen
  • Networking: integrated Davicom 10/100 Ethernet (not used in original configuration)
  • Expansion, IO: 4x PCI, 1x 16-bit ISA, 2x DE9 serial, DB25 parallel, PS/2 keyboard and mouse internally wired to 8p6c modular jack on front of chassis.
    Not exposed in original configuration: 2x USB 1.1 via header, Ethernet (is hidden within chassis)
  • Acquired: January 2011, eBay

* specification has been altered from the original configuration

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