53UBI EasyCoder 101 – Technical ManualMemory Card Types The printer's Read-Only Memory ("rom:") or Random AccessMemory ("ram:") can be supplemented by memory cards comply-ing with the JEIDA-4 standard.The printer must be equipped with an optional memory card adapterinside the front lid. Such an adapter can either be bought as a kit orbe factory fitted.Non DOS-formatted memory cards are available in two types,OTPROM (One-Time Programmable Read-Only Memory) orSRAM (Static Random Access Memory), each in several sizes inregard of memory capacity, see below.• OTPROM cards can only be read by the UBI Fingerprintsoftware after being preprogrammed using e.g. the UBI Configu-ration program. Once programmed, they cannot reprogrammed.• SRAM cards may be used the same way as OTPROM cards. Thefiles in such a card are regarded as an integrated part of the printer'sROM memory and can be listed using the statement FILES "rom:".DOS formatted memory cards are always of SRAM-type and canboth be read from and written to, i.e. they will work almost like afloppy disk. Files in a DOS-formatted card are addressed by adding"card1:" in front of the name of the file. The statement FILES"card1:" lists all files in the currently inserted card. UnformattedSRAM cards can be DOS-formatted in the printer using theFORMAT statement.All SRAM memory cards require internal 3V lithium batteries(coin type) to retain their content. In the table below, the dataretention term is stated, i.e. the amount of time a full-loaded batterycan be expected to retain the memory content of the card. Note thatthere is no consumption of battery voltage as long as the card isinserted in a switched-on printer. At least 30 minutes are allowed forbattery replacement without any loss of data.Capacity Data retention (SRAM)64 kbyte 2 years min.128 kbyte 1 year min.256 kbyte 6 months min.512 kbyte 3 months min.MEMORY CARD ADAPTER