Instruction
Specifier
Mnemonics
Instruction
Addressing Modes
Status
Bits

0000 0000 STOP Stop Execution U  
         
0000 0001 RETTR Return from trap U  
         
0000 0010 MOVSPA Move SP to A U  
         
0000 0011 MOVFLGA Move NZVC flags to A U  
         
         
0000 010a BR Branch uncondistional i,x  
         
0000 011a BRLE Branch if less than or equal to i,x  
         
0000 100a BRLT Branch if less than i,x  
         
0000 101a BREQ Branch if equal to i,x  
         
0000 110a BRNE Branch if not equal to i,x  
         
0000 111a BRGE Branch if geater than or equal to i,x  
         
0001 000a BRGT Branch if greater than i,x  
         
0001 001a BRV Branch if V i,x  
         
0001 010a BRC Branch if C i,x  
         
0001 011a CALL Call subroutine i,x  
         
         
0001 100r NOTr Bitwise invert r U NZ
         
0001 101r NEGr Negate r U NZV
         
0001 110r ASLr Arithmetic shift left r U NZVC
         
0001 111r ASRr Arithmetic shirt right r U NZC
         
0010 000r ROLr Rotate left r U C
         
0010 001r RORr Rotate right r U C
         
         
0010 01nn NOPn Unary no operation trap U  
         
0010 1aaa NOP Nonunary no operatrion trap i  
         
         
0011 0aaa DECI Decimal input trap d,n,s,sf,x,sx,sxf NZV
         
0011 1aaa DECO Decimal output trap i,d,n,s,sf,x,sx,sxf  
         
0100 0aaa STRO String output trap d,n,sf  
         
0100 1aaa CHARI Character input d,n,s,sf,x,sx,sxf  
         
0101 0aaa CHARO Charactor output i,d,n,s,sf,x,sx,sxf  
         
         
0101 1nnn RETn Return from call with n local bytes U  
         
         
0110 0aaa ADDSP Add to stack pointer (SP) i,d,n,s,sf,x,sx,sxf NZVC
         
0110 1aaa SUBSP Subtract from stack pointer (SP) i,d,n,s,sf,x,sx,sxf NZVC
         
         
0111 raaa ADDr Add to r i,d,n,s,sf,x,sx,sxf NZVC
         
1000 raaa SUBr Subtract from r i,d,n,s,sf,x,sx,sxf NZVC
         
1001 raaa ANDr Bitwise AND to r i,d,n,s,sf,x,sx,sxf NZ
         
1010 raaa ORr Bitwise OR to r i,d,n,s,sf,x,sx,sxf NZ
         
1011 raaa CPr Compare r i,d,n,s,sf,x,sx,sxf NZVC
         
         
1100 raaa LDr Load r from memory i,d,n,s,sf,x,sx,sxf NZ
         
1101 raaa LDBYTEr Load byte from memory i,d,n,s,sf,x,sx,sxf NZ
         
1110 raaa STr Store r to memory d,n,s,sf,x,sx,sxf  
         
1111 raaa STBYTEr Store byte r to memory d,n,s,sf,x,sx,sxf