Hello Sampah,

It is not a great code that I have - but will do the job alright. Here we go :

; FND_MAT is used to find the match in a look up table based on the contents
; of ACC when the routine is called. Calls SHO_NUM to display the 8 digit value.
; Each index points to the first digit of the eight digits. And each digit occupies
; one byte.

; Call with ACC holding the required Index and DPTR pointing to the LUT begining.

; ACC, DPTR, INDX, are all altered.

FND_MAT: MOV INDX, #0FFH ; Initialize index for looping

NXTINDX: INC INDX ; So that the first Index is a zero
PUSH ACC ; Save ACC before checking end of table...
CLR C
MOV A, #250 ; Error if 250 records have been searched
SUBB A, INDX ; and no match was found....
POP ACC
JC ERROR ; Go display error
INC DPTR ; Increment DPTR 8 times for eight digits
INC DPTR
INC DPTR
INC DPTR
INC DPTR
INC DPTR
INC DPTR
INC DPTR
CJNE A,INDX, NXTINDX ; Match found ? Loop back if not...
LCALL SHO_NUM ; DPTR is now pointing to the required display digits..
RET

ERROR: ( Routine to display error goes here )

SHONUM: ( Routine to display the eight digits goes here )

OK code gurus will scoff at the repeated INC DPTR statements. I just found this is as easy to handle as a modulo 8 loop.

Maybe there are better ways to handle such a LUT - this is one among them.

Hope to have been of help.( Sorry I never get my indents OK. But if you paste it in notepad it will line up OK )

Raghu