Last modified on 10 January 2010, at 14:10

Dobbertin Harddisc

Revision as of 14:10, 10 January 2010 by Nocash (Talk | contribs) (Promo (summary) (english))

Dobbertin Logo

A harddisc manufactured by the German company called Dobbertin.

One of the first ways to connect a Harddisc to the CPC. The Dobbertin harddisc has a capacity of 20MB. The disc was partitioned in four partitions of 5152Kb each. It was delivered with drivers for CP/M(2.2 and CP/M+) and allows up to 512 directory entries for each drive.

Reviewed in Amstrad Computer User.

Pictures

Disc

Software using the Dobbertin Harddrive

Technical

Uses X-DDOS v2.10 (which supports the harddisc, and additionally supports external double sided 80track disc drives). The 20MB harddisc is split into 4 partitions, with drive names D, E, F, and G (drive name C isn't used here, but may be used as RAM disc, in combination with Dobbertin RAM expansion). I/O Ports:

 #FBE0  Dobbertin Harddisc Data Port
 #FBE1  Dobbertin Harddisc Status, Reset
 #FBE2  Dobbertin Harddisc Select, Configuration
 #FBE3  Dobbertin Harddisc DMA, Interrupt
 #FBE4  Dobbertin Harddisc Reset

Other harddisc solutions for the CPC

Modern:

Promo (summary) (english)

  • Controller: Seagate ST11M XT-controler.
  • Harddisc: 20 MByte (3.5" Seagate, NEC, Kyocera, or Miniscribe)
  • X-DDOS 2.10 (selectable in ROM bank 1-7)
  • 4 Partitions of 5152 KByte (5 MBbyte) (accessible as Drive D: to G:)
  • 512 Directory entries per partition
  • support for CP/M 2.2 with 63K TPA (requires 128K), and for CP/M Plus
  • support for Softwareclock and TIMEROM+ (Real Time Clock under CP/M Plus)
  • Price: DM 1100.-

Promo (german)