Seriously though, check the following out for the PDP-1 Macro Assembler manual: http://bitsavers.trailing-edge.com/pdf/dec/pdp1/PDP-1_Macro....
Seriously though, check the following out for the PDP-1 Macro Assembler manual: http://bitsavers.trailing-edge.com/pdf/dec/pdp1/PDP-1_Macro....