BT Monarch RAM cards

16k RAM/12k NVRAM ASU 1A6/SA20076 UV 010804 EET 82/1 RRRR

Note the battery for NVRAM is not on motherboard

Ram is 14x hitatchi HM6116LP-4 ICS (2048 word x 8 bit high speed CMOS static RAM)

BT Monarch ASU 4A1/SA20476 176k NVM/RAM

Ram is 22x hitatch HM6264LP-12 (8192 word x 8-Bit) High Speed CMOS Static RAM) 22X8 =176K

BT Monarch 1 meg byte memory card ASU 1A1/SA21023

This card has Prom and RAM so no need for PROM card if this in system