MEMORY PLUS Manual By Lee Davison and Hans Otten Back to The Computerist

					INTRODUCTION
  MEMORY PLUStm has been designed specifically to work with the KIM-1, SYM-1,
  AIM 65 microcomputers.  It greatly extends the power of the basic MICRO by
  providing four major facilities:

	RAM Memory:	8K bytes of low power 2102 type static RAM.

	ROM Memory:	Sockets and decoding for up to 8K bytes of 2716 type
			erasable programmable read-only memory - EPROM

	Versatile Interface Adapter:	Two 8-bit programmable I/O ports with
			additional handshaking lines.  Two sophisticated timers.
			A serial-to-parallel and parallel~to-serial shift
			register.

	EPROM Programmer:	All components required to programming the INTEL
			type 2716 EPROM.  This includes a programming socket,
			all hardware, a +25 volt regulator circuit, and an
			EPROM Programming program on cassette tape.

  Other features of MEMORY PLUS include:

	On board +5 volt regulators:	User need only supply +8 to +10 unregulated
			power for running everything on MEMORY PLUS except the
			EPROM Programmer.

	Provision for Battery Backup:	External batteries may be connected to
			MEMORY PLUS to maintain power to the RAMs during any power
			outage, thereby automatically preserving the contents of
			the RAM.

	All ICs are socketted:  This means that in the event of a chip failure
			in the field the user may often be able to correct the
			problem immediately and locally, and not be required to
			ship the board back to the factory for service.

	May be mounted directly underneath the KIM-1 or SYM-1.  Mounting holes are
			provided so that the board may be attached to the existing
			holes on the KIM-1 or SYM-1.

	Compatible with the KIM-1 Bus:	The basic connections between the MICRO
			and MEMORY PLUS are identical to those between the KIM-1 and
			KIM-2/KIM-3.  Therefore, users who have already designed and/or
			built systems based on these KIM boards may easily adapt to
			the MEMORY PLUS board.

	Provision for Off-the-board EPROM Programming Socket:	All of the lines
			necessary to add an external EPROM Programming Socket are
			available at the MEMORY PLUS application connector.

	Fully Assembled, Burned-in, and Tested:	Ready to go.

	Switch Selectable Addressing:	Starting address for RAM and ROM are set
			by rotary switches on the board.  They may each start at
			any 8K boundary (2K hex).