← Back to hardware

RAM Expander Signal and Expansion ROM Socket

Lundy Electronics · Memory Expansion
Catalogue IDHW-0102
ManufacturerLundy Electronics
Person or teamJohn Lundy
TypeMemory Expansion (Expansion)
Connects viaInternal Slot #2
PlatformADAM
StatusReleased
Manufacturer site https://lundyelectronics.com
SourceCollectors DB v1.00 Master

Notes

A tiny, single-purpose board that solves one specific problem cheaply. The ADAM has no built-in way to reach RAM cards bigger than 64K; large expanders (256K, 512K, 1MB) need an extra "addressor" signal to bank-switch their memory into the processor's view.

Rather than buy a full multi-interface board just for that one signal, this Lundy Electronics exclusive generates the required memory-expander addressor signal on its own (and provides an expansion ROM socket as well). Installs in expansion slot #2.