EP 0194660 A2 19860917 - Electronic postage meter having a memory map decoder and an illegal-memory-access warning signal, respectively.
Title (en)
Electronic postage meter having a memory map decoder and an illegal-memory-access warning signal, respectively.
Title (de)
Frankiermaschine mit einem Decodierer des Speicherroutinenverzeichnisses, bzw. mit einem Warnsignal bei illegalem Speicherzugang.
Title (fr)
Machine d'affranchissement possédant un décodeur de direction de routines mises en mémoire ainsi qu'un signal d'avertissement d'accès illégal à la mémoire.
Publication
Application
Priority
- US 71079985 A 19850312
- US 71080085 A 19850312
Abstract (en)
An electronic postage meter having an improved memory selection circuit (CPU) is disclosed. A custom memory map decoder circuit which resolution down to a single byte location is used to provide selection enabling signals to insure the selection of an appropriate device only when the addresses appropriate to that device are communicated. A warning signal is provided whenever an attempt is made to access an illegal or unused address.
IPC 1-7
IPC 8 full level
G07B 17/00 (2006.01)
CPC (source: EP)
G07B 17/00362 (2013.01); G07B 2017/00258 (2013.01); G07B 2017/00403 (2013.01)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0194660 A2 19860917; EP 0194660 A3 19870429; EP 0194660 B1 19920325; DE 3684496 D1 19920430
DOCDB simple family (application)
EP 86103281 A 19860312; DE 3684496 T 19860312