GE - Products & Services - Parts / Warranty / Repair - Machine Tool Controls

1	Conversational CPU Module	A20B-2901-0390	CPU for Conversational Function
2	DRAM Module	A20B-2900-0550	1 MB	Work RAM for Conversational Function
		A20B-2900-0551	512 KB
		A20B-2900-0555	128 KB
3	ROM Module	A20B-2900-0290	1 MB	System ROM for Conversational Function
		A20B-2900-0291	768 KB
		A20B-2900-0292	512 KB
4	SRAM Module	A20B-2900-0541	512 MB	Sub-memory for Conversational Function
5	ROM Module	A20B-2900-0291	System ROM for PMC-NB
6	PMC CPU Module	A20B-2901-0581	CPU Module for PMC-NB
7	PMC Engine Module	A20B-2901-0660	PMC Operation Control, I/O Link Control
8	SRAM Module	A20B-2901-0400	1.25 MB	Work RAM for PMC-NB
8	SRAM Module	A20B-2901-0402	512 KB	Work RAM for PMC-NB
9	BOARD NOT USED