AY0438 Display Driver

[tallen]

Mark & Robert,

You were correct that the wiring was different. I was able to pull the old asm code from the original C code to put in my basic code. Now thats a little confusing. I got the asm code to work for the most part, but I still have not got a good understanding on how it works. I just wrote a small basic program to count from 1-100 and roll to test it. It counts correctly on the display, but it shows up as the following:

001, 002, 003, 004, ...

I would like to get rid of the leading zero's if possible. Any ideas on this. I would like it to look like the following:

1, 2, 3, 4, ...


Thanks again for the help.

Terry

[mark_s]

I took your code and changed the lookup statements in the pbp code
it may need some slight adjustments. Also added zero suppression.
Can someone explain how to insert code into these messages? I
see others using "code:" Thanks

    TOTAL = TEMP
    THOU = TOTAL/1000 
    TOTAL = TOTAL//1000
    HUNS = TOTAL/100
    TOTAL = TOTAL//100
    TENS = TOTAL/10
    ones = TOTAL//10


    'SEVEN SEG LOOKUP
    LookUp ONES,[124,72,61,109,75,103,119,76,127,111],LCD_ONES
    LookUp TENS,[124,72,61,109,75,103,119,76,127,111],LCD_TENS
    LookUp HUNS,[124,72,61,109,75,103,119,76,127,111],LCD_HUNS
    LookUp THOU,[124,72,61,109,75,103,119,76,127,111],LCD_THOU
    
    If Temp < 1000 then LCD_THOU = 0 'Suppress leading zeros
                If Temp < 100 then LCD_HUNS = 0
    If Temp < 10 then LCD_TENS = 0

'PORTB.0 = DATA
'PORTB.1 = CLOCK
'PORTB.2 = LOAD DATA

    PORTB.2 =0     'LOAD DATA AY0438
    ShiftOut PORTB.0,PORTB.1,0,[LCD_ONES,LCD_TENS,LCD_HUNS3,LCD_THOU]  'SEND 4 BYTES
    PORTB.2 =1     'Latch DATA



Below is from your code I used the calculator in windows accessories to convert
the hex to decimal for the above Lookup statements
'-------------------------------------------------------------
'
'               RETLW  0x7e          = 0 124
'               RETLW  0x48          = 1  72
'              RETLW  0x3D          = 2  61
'              RETLW  0x6D          = 3 109 
'              RETLW  0x4B          = 4  75
'              RETLW  0x67          = 5 103       
'              RETLW  0x77          = 6 119        
'              RETLW  0x4C          = 7  76
'              RETLW  0x7F          = 8 127
'              RETLW  0x6F          = 9 111

[tallen]

Thanks,

I will try this

Terry

[ScaleRobotics]

Can someone explain how to insert code into these messages? I
see others using "code:" Thanks

To insert code, use code tags like this, but without the space:

[ code]
your code
goes here
[ /code]

and you will get this:

your code
goes here

Walter