Re: Apple II Europlus F0 ROM wanted (UK)

["Laine Houghton" <LaineH@msn.com.com>]

> BTW are ROM failures common?
> Regards, John

I tried to find data online to confirm my fuzzy memory but came up empty.

I was under the impression the silicon from that era  was good for around 15
years before it was at risk for developing Altzheimers.

I am giving consideration to using NVsram to extend the life of the
machines.

http://www.simtek.com/prod-selector-guide.html

FEATURES

 20, 25, 35 and 45ns Access Times

 STORE to EEPROM Initiated by Software

 RECALL to SRAM Initiated by Software or Power Restore

 10mA Typical ICC at 200ns Cycle Time

 Unlimited READ, WRITE and RECALL Cycles

 1,000,000 STORE Cycles to EEPROM

 100-Year Data Retention in EEPROM

 Commercial and Industrial Temperatures

 28-Pin PDIP and SOIC Packages