Table 6: Instructions list Symbol Hex Description code AND 0 or 8 AND Mto AC ADD I or9 Add M to AC, carry to E LDA 2 or A Load AC from M STA 3 or B Store AC in M BUN BSA 4 or C 5 or D Branch unconditionally to m Save return address in m and branch to m+1 ISZ 6 or E Increment M and skip if zero CLA 7800 Clear AC CLE 7400 Clear E CMA 7200 Complement AC CME 7100 Complement E CIR 7080 Circulate right E & AC CIL 7040 Circulate left E and AC INC 7020 Increment AC SPA SNA SZA SZE HLT INP 7010 7008 7004 7002 7001 F800 Skip if AC is positive Skip if AC is negative Skip if AC is zero Skip if E is zero Halt computer Input information and clear flag Output information and clear OUT F400 flag SKI F200 Skip if input flag is on SKO F100 Skip if output flag is on ION F080 Turn interrupt on IOF F040 Turn interrupt off