URI: 
       Index of /pdf/burroughs/MediumSystems/Memos
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   DIR /pdf/burroughs/MediumSystems
       1983-9943_MCP_TABLES_198307.pdf
       1983-9992_Sprite_Memos_198303.pdf
       1983-9992_Sprite_Reference_Manual_198304.pdf
       1990-3830AC-ORS-Special-Instructions_198604.pdf
       1990-9779B-ORS-DLP_198604.pdf
       1997-5390A_V_Series_Instruction_Set.pdf