A memory expansion by the German company Dobbertin.
The Dobbertin memory expansions are compatible to the memory expansions by dk'tronics. The memory expansion came in two versions. A version with only the memory expansion, and a version with two sockets for additional rom software.
Technical Specifications
Could take memory configurations of Dram types 4164 to 41256, thus making memory configurations between 64Kb and 512Kb possible.
Optional two rom sockets. Each socket could be manually configured for rom 1-15
Software
Dobbertin supplied RDOS as a optional ROM to use the memory expansion.
Other memory expansions
Non compatible to the Dobbertin expansion:
Photos
- The Dobbertin ram expansion
Top view
Inside here a version with the optional two roms mounted.
Inside top view
