[an error occurred while processing this directive] [an error occurred while processing this directive] PDP-8 Memory Module Map [an error occurred while processing this directive] [an error occurred while processing this directive] [an error occurred while processing this directive]
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PDP-8 Memory Module Maps

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[an error occurred while processing this directive] Part of [an error occurred while processing this directive] the PDP-8 Hardware Documentation
[an error occurred while processing this directive] See also [an error occurred while processing this directive] (none)
[an error occurred while processing this directive] [an error occurred while processing this directive] (none) Douglas W. Jones [an error occurred while processing this directive] (none)
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THE UNIVERSITY OF IOWA Department of Computer Science [an error occurred while processing this directive] and (none) [an error occurred while processing this directive]

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Copyright © (none) This work may be transmitted or stored in electronic form on any computer attached to the Internet or World Wide Web so long as this notice is included in the copy. Individuals may make single copies for their own use. All other rights are reserved.

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Note: The following material has been proofread a few times, but the DEC original drawings from which this material is taken were not printed clearly, and as a result, there may be errors here! I would like to thank Kevin Murrell for his work on this.

PDP-8 Maintenance Manual Preliminary, F-87, 2/66

Memory Utilization Module List UML-E-8M-0-20

Note, to make this figure easier to type, I've turned it on its side!

	 Key:	---- unused slot
		++   low half of double height module
		*    used only with #183 memory extension control
		^    used only with #188 memory parity option
		~    Component plate containing inhibit driver resistors
		=    Memory Stack


		Front end of Memory Backplane

	Top					Bottom
	MA	MB	MC	MD	ME	MF

1	~	~	R203 *	R205 *	R201 *	R111 *
2	~	~	R203 *	R205 *	R201 *	R002 *
3	~	~	R151 *	R201 *	R201 *	R111 *
4	~	~	R151 *	R201 *	R603 *	R002 *
5	~	~	R151 *	R201 *	R603 *	W640 *
6	~	~	G209	++	R111 *	R123 *
7	~	~	G209	++	R107 *	R123 *
8	=	=	G209	++	R107 *	B360 ^
9	=	=	G209	++	R002 ^	B104 ^
10	=	=	W025	++	R111 ^	R603 ^
11	=	=	W025	++	B130 ^	R202 ^
12	=	=	G209	++	B130 ^	B130 ^
13	=	=	G209	++	B130 ^	B130 ^
14	=	=	G209	++	B130 ^	R202
15	=	=	G209	++	R405	R202
16	=	=	R650	B204	R111	R202
17	=	=	W300	++	R002	R603
18	=	=	W300	++	R111	R603
19	=	=	W607	B104	R107	R202
20	=	=	B602	B360	R202	R202
21	=	=	G208	G208	R203	R603
22	=	=	G208	G208	R220	R220
23	=	=	W025	++	R220	R220
24	=	=	G208	G208	R220	R220
25	G007	G007	G208 ^	R650	R205	W050
26	G007	G007	R650	R650	R650	R650
27	G007	G007	R650	R650	R650	R650
28	G007	G007	R650	R650	R650	R650
29	G007	G007	R650	R650	----	----
30	G007	G007	----	W640	W011 *	W070
31	G007 ^	G008	W640	B684 *	W011 *	W011 *
32	R603 *	B684 *	B684 *	B684 *	W011 *	W011 *
33	R603 *	B684 *	B684 *	B684 *	W011 *	W011 *
34	R603 *	B684 *	B684 *	B684 *	W011	W011
35	W026	B684 *	B684 *	W024 *	W011	W011
36	W024	W024	W024	W024	W024	W024
	MA	MB	MC	MD	ME	MF
	Top					Bottom


		Back end of Memory Backplane