oggin Op-code Listing
                  ---------------------
Group 1 Op-codes:   Group 2 Op-codes:   Group 3a Op-codes:
00xxxx -> Group 2   000000 stp          100xxx beq
01mxxx lda          000001 rts          102xxx bne
02mxxx sta          000002 asr          104xxx bgt
03mxxx ldi          000003 asl          106xxx bge
04mxxx add          000004 neg          Group 3b Op-codes:
05mxxx sub          000005 psh          170xxx blt
06mxxx cmp          000006 pul          172xxx ble
07mxxx and          000007 clr          174xxx bcs          
10xxxx -> Group 3a  000010 inc          176xxx bcc
11mxxx ora          000011 trp
12mxxx jsr          000012 rtt          000020
13mxxx jmp          000013 sti            to   unassigned
14mxxx unassigned   000014 rir          007777
15mxxx unassigned   000015 spi          
16mxxx unassigned   000016 lsr          Modes:
17xxxx -> Group 3b  000017 lsl          0:#  2:d  4:i  6:x