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2 Mb Memory Expander

MICRO INNOVATIONS · Memory Expansion
Platform, category and status for this entry were derived automatically from the source list and have not yet been checked by hand.
No photographs catalogued for 2 Mb Memory Expander yet
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Catalogue IDHW-0363
ManufacturerMICRO INNOVATIONS
Person or teamMark Gordon
TypeMemory Expansion (Expansion)
Connects viaInternal Expansion Slot #3
PlatformADAM
StatusReleased
SourceCollectors DB v1.00 Master

Notes

A two-megabyte memory card for the ADAM - as much RAM as anyone has put in the machine, against the 64K Coleco offered and the 144K a stock expander reaches.

What it is for

  • Not for programs. Ordinary ADAM software sees the base 64K plus 64K whatever is installed.
  • CP/M and T-DOS see the whole card and use the surplus as a RAM disk - which at this size means an entire working library held in memory, faster than any disk the machine can attach.

What it needs

  • An addressor card, or a board carrying that function, since the ADAM's bus was designed around a 64K expander.

Lundy Electronics prototyped a two-megabyte card as well, catalogued here - two makers arriving at the same ceiling from different decades.