Blocks
======

Chassis is 2m high, and contains XX units in two columns

Items (chassis mount)
=====================
* Terminal is 2u
* cpu is 1u (includes 32k mem, console controller)
* tape is 2u
* disk is 1u
* memory module is 1u/32k

Supported hardware
==================

4 RL disks
4 TM magtapes
?? serial multiplexer

Cabling
=======

unibus only extends between connected chassis (l/r)