78: UC TestFlip(UC c)
    79: {
    80: c=c/2&85|c*2&170;c=c/4&51|c*4&204;RT c>>4|c<<4;
C:0x006E    EF       MOV      A,R7
C:0x006F    C3       CLR      C
C:0x0070    13       RRC      A
C:0x0071    5455     ANL      A,#0x55
C:0x0073    FE       MOV      R6,A
C:0x0074    EF       MOV      A,R7
C:0x0075    25E0     ADD      A,ACC(0xE0)
C:0x0077    54AA     ANL      A,#0xAA
C:0x0079    4E       ORL      A,R6
C:0x007A    FF       MOV      R7,A
C:0x007B    13       RRC      A
C:0x007C    13       RRC      A
C:0x007D    5433     ANL      A,#0x33
C:0x007F    FE       MOV      R6,A
C:0x0080    EF       MOV      A,R7
C:0x0081    25E0     ADD      A,ACC(0xE0)
C:0x0083    25E0     ADD      A,ACC(0xE0)
C:0x0085    54CC     ANL      A,#TL2(0xCC)
C:0x0087    4E       ORL      A,R6
C:0x0088    FF       MOV      R7,A
C:0x0089    C4       SWAP     A
C:0x008A    54F0     ANL      A,#B(0xF0)
C:0x008C    FE       MOV      R6,A
C:0x008D    EF       MOV      A,R7
C:0x008E    C4       SWAP     A
C:0x008F    540F     ANL      A,#0x0F
C:0x0091    4E       ORL      A,R6
C:0x0092    FF       MOV      R7,A
    81: }
C:0x0093    22       RET