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


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== Technical ==
== 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:
Uses X-DDOS v2.10 (which supports the harddisc, and additionally supports external double sided 80track disc drives). The 20MB harddisc is split into four 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
   #FBE0  Dobbertin Harddisc Data Port
   #FBE1  Dobbertin Harddisc Status, Reset
   #FBE1  Dobbertin Harddisc Status, Reset

Revision as of 22:38, 26 January 2010

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Dobbertin Logo

A harddisc manufactured by the German company Dobbertin.

One of the first ways to connect a Harddisc to the CPC. The Dobbertin harddisc has a capacity of 20 MB. The disc was partitioned in four partitions of 5152 KB 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 four 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)

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