; Simple example machine language programm to add two numbers
; in direct mode (load numbers from memory)
;
; Peter Christen, 16 March 2004

START a10               ; start address of the program, initialise PC to this

AT a1                   ; address where numbers and result is stored
000 000 000 000 010 0   ; a1: decimal 4
000 000 000 000 010 1   ; a2: decimal 5
000 000 000 000 000 0   ; a3: decimal 0 (result will be stored into here)

AT a10                  ; store the following data (instructions) from a10 onwards
001 001 0 000 000 001   ; a10: load  mem[a1]
001 011 0 000 000 010   ; a11: add   mem[a2]
001 010 0 000 000 011   ; a12: store mem[a3]
110101  0 000 000 001   ; a13: trap 1 (halt)