EPROMs

Basic system software and other permanent data such as character shapes needs to be available immediately after power-on and hence was burned in EPROM (Erasable Programmable Read Only Memory) chips.

Below you can see a selection of EPROMs from the ORDINATOR and DISKSERVER.

DIAMOND 2.1, 03/06/88 2732A containing base part of DIAMOND software
EXTENS 2.2, 03/06/88 2732A containing extension part of DIAMOND software
KEYBOARD, 17/03/86 2716 containing ORDINATOR keyboard controller software
ORCHSET, 05/01/91, (pseudo 2732) pseudo 2732A (patched 27128) containing ORDINATOR first video display character set
ORCHSET, 05/01/91, (pseudo 2732) pseudo 2732A (patched 27128) containing ORDINATOR second video display character set
LAN 23/09/88, (c) ORDGROUP, DJO-E, 17/03/86 2732A containing ORDINATOR LAN controller software
SVMON 241086 2732A containing DISKSERVER monitor program software
LAN 23/09/88, (c) ORDGROUP, DJO-E, 17/03/86 2732A containing DISKSERVER LAN controller software