Notes: MF11-L Core Memory

The machine has a full 32KW of core memory. This is in two MF11-L backplanes. The first contains 3 MM11-L board sets, each consisting of a H215, G110, and G231. The second backplane contains one MM11-L. The H215 is an 8K by 18-bit memory stack: two additional bits are available for parity, but this machine does not have the memory parity option and these bits are not used.

Detail information on this option is available in the manual DEC-11-HMFLA-B-D MM11-S, MF11L, and MF11-LP core memory system

Address Jumpers

Jumper Layout

Module G110 contains the address configuration jumpers for each MM11-L board set. These jumpers are near the A B slot fingers.
W8 W5 W3
res W7 res res
W10 W6 W4 W2
W9 res res res

Bank 0: 0 - 8K (000 000 - 037 776)

--------- --------- ---------
-===- --------- -===- -===-
--------- --------- --------- ---------

-===- -===- -===-

Bank 1: 8 - 16K (040 000 - 077 776)

--------- --------- ---------
-===- --------- -===- -===-
---------   --------- ---------
-===- -===- -===-

Bank 2: 16 - 24K (100 000 - 137 776)

--------- --------- ---------
-===- --------- -===- -===-
--------- ---------
---------
-===- -===- -===-

Bank 3: 24 - 32K (140 000 - 177 776)

--------- --------- ---------
-===- --------- -===- -===-
---------

---------
-===- -===- -===-