Last Change 7/17/93.  Please send updates directly to Harald.
 AAD:       OPCODE: d5,0a     OPCODE VARIANT
 AAM:       OPCODE: d4,0a     OPCODE VARIANT
 LOADALL:    OPCODE: 0f,05 (i80286) & 0f,07 (i80386 & i80486)
 UNKNOWN:    OPCODE: 0f,04     UNDOCUMENTED
 SETALC:     OPCODE: d6       UNDOCUMENTED
 FMUL4X4:    OPCODE: db,f1     IIT ONLY
 FSBP0:     OPCODE: db,e8     IIT ONLY
 FSBP1:     OPCODE: db,eb     IIT ONLY
 FSBP2:     OPCODE: db,ea     IIT ONLY
 FSBP3:     OPCODE: db,e9     IIT ONLY   UNDOCUMENTED
 FSIN:      OPCODE: d9,fe     IIT 2c87+ (also Intel 80387+) UNDOCUMENTED
 FCOS:      OPCODE: d9,ff     IIT 2c87+ (also Intel 80387+) UNDOCUMENTED
 opcode: processor:  remark & remedy: