有意义, 就给一个 16 bit 的给LZ
CONVERT:
;INPUT:
; B:A B:BIT9..15 A:BIT0..7
;OUTPUT:
; B:A
JNZ L_CV_11
ACALL L_CV10
XCH A, B
RET
L_CV_11:
XCH A, B
JZ L_CV10
ORL A, #1
CALL L_CV
L_CV10:
XCH A, B
L_CV:
MOV R7, A
ANL A, #0F0H
JZ L_CV1
ANL A, #11000000B
MOV R6,#00011111B
JZ L_CV2
MOV R6, #01111111B
SJMP L_CV2
L_CV1:
MOV A, R7
ANL A, #1100B
JZ L_CV3
MOV R6, #111B
L_CV2:
MOV A, R7
CPL A
INC A
ANL A, R6
L_CV3: ORL A, R7
RET
;--------------------------------
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