Coleco ADAM

SmartBASIC is an Applesoft work-alike.

Chips

Chip	Where	Role
Z80A CPU		Main CPU (8-bit, 40-DIP)
TMS9918A / TMS9928A / TMS9929A video display processor		Video display processor (VDP) with its own 16 KB DRAM bus. Composite out on 9918A; Y, R-Y, B-Y on 9928A/9929A.
SN76489 / SN94624 (TMS9919) sound generator		Three tone voices and one noise voice, written over an 8-bit data bus.
4164 DRAM 64K×1		Main RAM (8 chips = 64 KB)
4116 DRAM 16K x 1		Dynamic RAM, 16K x 1 (lower 16K on the Spectrum)
MC6801 microcontroller		ADAMnet processors (single-chip mode, 1 MHz). Master and tape-drive 6801s on the Memory and I/O board; keyboard and printer each have their own.
EOS / SmartWRITER ROM		EOS (Elementary Operating System) and the 32 KB SmartWRITER ROM on the Memory and I/O board.
MIOC (Memory Input Output Controller)		Links the Z80 and the master 6801; selects the memory map; DRAM refresh and multiplex control.

Printer / power cable (J9), DE-9 on the memory console; the cable is wired into the printer
ADAMnet jacks (J2, J8), 6P6C modular jacks (RJ12 style) UNVERIFIED
SmartKeyboard cable, Coiled modular cable to an ADAMnet jack UNVERIFIED
Cartridge slot, 30-contact card-edge socket UNVERIFIED
Controller ports, DE-9, male on the console
Expansion port (P1, right side), 60-contact male card edge on the memory console UNVERIFIED
Expansion slot 1 (J7, left), Internal card-edge socket under the console lid UNVERIFIED
Expansion slot 2 (J6, center), Internal card-edge socket under the console lid UNVERIFIED
Expansion slot 3 (J5, right, memory), Internal card-edge socket under the console lid UNVERIFIED
RF output, RCA phono jack UNVERIFIED
Composite video output, RCA phono jack UNVERIFIED
Data drive control (J10, internal), 9-pin header on the Memory and I/O board
Data drive read/write (J11, internal), 8-pin header on the Memory and I/O board