SEYMOUR@phast.phys.washington.EDU (06/22/88)
we haven't done a REAL DEC vt240, but we have replaced the NVR (non-volatile ram: either a battery-backed static ram chip or an Electrically Eraseable Read Only Memory or a "shadow ROM" (unlikely)) in an Ergo 100. in any terminal i've taklen apart, the NVR chips are usually in a socket (sometimes they're the ONLY chip in a socket). the replacement chips are usually less than $5. they are usually recognizable by having some discrete components (such as a single transistor and a few resistors in a uniquely messy layout) nearby (generating the erase/rewrite voltages). -- dick seymour seymour@uwaphast.bitnet