Sheets for 256kb-RAM-Expansion

01: Overview from Original 256kb-RAM-expansion and EPROM-expansion (Hannes-version), circuit
02: Practical realisation, position of the new chips in plus/4, wires
03: circuit for all new gatters of the update (TED-feature) of Hannes-256kb-RAM-expansion
04: Practical realisation of this update, includes sheet 02
05: CSORY-expansion in diskrete logic (gatters), this sheet shows only the added gatters to Hannes-expansion! Circuits
06: CSORY-expansion with GAL (Generic Array Logic). I built only this expansion, because not so much work... Complete (with Hannes...) circuit.
07: Some practical tips to realise the CSORY-expansion.

Sorry for some tips in German. If you have questions then please use plus/4-mailing-list or write directly to me: solder@gmx.net