LED Scrolling Message Source Code

Compy · Mar 23, 2005

Hi, i have made this circuit but its source code is written in Assembly and my project is in C++ .. m looking for source code which could write A on this circuit..

then i'll write for others by myself..

just need a start.. thanks

aryajur · Mar 26, 2005

the best thing to do is to translate the code from assembly to C which shouldn't be too difficult. Post the code here.
the circuit seems simple enough and the code in C can also be written from scratch. All you need to know is how to control the parallel port.

Cortex · Mar 26, 2005

this Circuit Multiplexing the led
if you want my advice
use a uP and a Eeprom to store the Message then u can save work to the PC and speedup your Soft

shafee001 · Mar 26, 2005

please post your assemply code and the expected result and i will provide you with equavilent C++ code,
thanks

Compy · Mar 27, 2005

Hi here is the file which has asm file as well exe file for this project.

i need C++ version of this code..

tx

Compy · Mar 29, 2005

mmm No reply...

well are there some tools which convert Assembly code into C++ ?

Cortex · Mar 29, 2005

Here is the Default Fonts

Code:

Font	db    0	; NUL  Ascii character
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;01 ASCII code
	db    1	
	db    1	
	db    1	
	db    1
	db    1	
	db    1	
;02 
	db    2	
	db    2 
	db    2	
	db    2 
	db    2	
	db    2	
;03
	db  3h	
	db  3h	
	db  3h	
	db  3h	
	db  3h	
	db    3	
;04 
	db  4h	
	db  4h	
	db  4h	
	db  4h	
	db  4h	
	db    4	
;05
	db  5h	
	db  5h	
	db    5	
	db  5h	
	db  5h	
	db    5	
;06
	db  6h	
	db  6h	
	db  6h	
	db  6h	
	db  6h	
	db    6	
;07
	db    07	
	db    07	
	db    7	
	db    07	
	db    07	
	db    07	
;08 
	db  8h	
	db  8h	
	db  8h	
	db    08	
	db    08	
	db    08	
;09 
	db    09	
	db    09	
	db  9h	
	db  9h	
	db  9h	
	db    9	
;0A
	db  0Ah	
	db  0Ah	
	db  0Ah	
	db  0Ah	
	db  0Ah	
	db    0Ah	
;0B 
	db    0Bh	
	db    0bh	
	db  0Bh	
	db    0Bh	
	db    0Bh	
	db    0Bh	
;0C 
	db    0Ch	
	db  0Ch	
	db  0Ch	
	db    0Ch	
	db    0Ch	
	db    0Ch	
;0D 
	db    0Dh	
	db    0Dh	
	db    0Dh	
	db    0Dh	
	db    0Dh	
	db    0Dh	
;0E 
	db    0Eh	
	db    0Eh	
	db 	0Eh	
	db    0Eh	
	db    0Eh	
	db    0Eh	
;0F 
	db  0Fh	
	db  0Fh	
	db   0Fh	
	db   0Fh	
	db    0Fh	
	db    0Fh	
;10
	db    0 
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;11 
	db    0	
	db    0	
	db    0	
	db  	0	
	db    0	
	db    0	
;12 
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;13
	db  14h	
	db  7Fh	
	db  14h	
	db  7Fh	
	db  14h	
	db    0	
;14 
	db  24h	
	db  2Ah	
	db  7Fh	
	db  2Ah	
	db  12h	
	db    0	
;15
	db  23h	
	db  13h	
	db    8	
	db  64h	
	db  62h	
	db    0	
;16
	db  36h	
	db  49h	
	db  56h	
	db  20h	
	db  50h	
	db    0	
;17
	db    0	
	db    0	
	db    7	
	db    0	
	db    0	
	db    0	
;18 
	db  1Ch	
	db  22h	
	db  41h	
	db    0	
	db    0	
	db    0	
;19 
	db    0	
	db    0	
	db  41h	
	db  22h	
	db  1Ch	
	db    0	
;1A
	db  22h	
	db  14h	
	db  7Fh	
	db  14h	
	db  22h	
	db    0	
;1B 
	db    8	
	db    8	
	db  3Eh	
	db    8	
	db    8	
	db    0	
;1C 
	db    0	
	db  40h	
	db  30h	
	db    0	
	db    0	
	db    0	
;1D 
	db    8	
	db    8	
	db    8	
	db    8	
	db    8	
	db    0	
;1E 
	db    0	
	db    0	
	db  40h	
	db    0	
	db    0	
	db    0	
;1F 
	db  20h	
	db  10h	
	db    8	
	db    4	
	db    2	
	db    0	
;20 ASCII Space character
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;! 
	db    0	;  
	db    0	;  
	db    0	;  
	db  5Fh	; 01011111
	db    0	; 
	db    0	; 
;" 
	db    0	;  
	db    7	; 00000111 
	db    0	;  
	db    7	; 00000111 
	db    0	;  
	db    0	;  
;#
	db  14h	; 00010100
	db  7Fh	; 01111111
	db  14h	; 00010100 
	db  7Fh	; 01111111
	db  14h	; 00010100
	db    0	; 
;$ 
	db  24h	; 00100100
	db  2Ah	; 00101010
	db  7Fh	; 01111111
	db  2Ah	; 00101010
	db  12h	; 00010010 
	db    0	; 
;%
	db  23h	; 00100011
	db  13h	; 00010011 
	db    8	; 00001000 
	db  64h	; 01101000
	db  62h	; 01100010
	db    0	; 
;&
	db  36h	; 00110110
	db  49h	; 01001001
	db  56h	; 01010110
	db  20h	; 00100000
	db  50h	; 01010000
	db    0	; 
;'
	db    0	;  
	db    0	;  
	db    7	; 00000111 
	db    0	;  
	db    0	;  
	db    0	; 
;( 
	db  1Ch	; 00011100
	db  22h	; 00100010
	db  41h	; 01000001
	db    0	;  
	db    0	;  
	db    0	; 
;) 
	db    0	;  
	db    0	;  
	db  41h	; 01000001
	db  22h	; 00100010
	db  1Ch	; 00011100 
	db    0	; 
;*
	db  22h	; "
	db  14h	;  
	db  7Fh	; 
	db  14h	;  
	db  22h	; "
	db    0	; 
;+ 
	db    8	; 00001000
	db    8	; 00001000 
	db  3Eh	; 00111110
	db    8	; 00001000 
	db    8	; 00001000 
	db    0	; 
;, 
	db    0	;  
	db  40h	; 00100000
	db  30h	; 00110000
	db    0	;  
	db    0	;  
	db    0	; 
;- 
	db    8	; 00001000 
	db    8	; 00001000 
	db    8	; 00001000 
	db    8	; 00001000 
	db    8	; 00001000 
	db    0	; 
;. 
	db    0	;  
	db    0	;  
	db  40h	; 01000000
	db    0	;  
	db    0	;  
	db    0	; 
;/ 
	db  20h	; 00100000 
	db  10h	; 00010000 
	db    8	; 00001000 
	db    4	; 00000100 
	db    2	; 00000010 
	db    0	; 
;0 
	db  3Eh	
	db  51h	
	db  49h	
	db  45h	
	db  3Eh	
	db    0	
;1 
	db    0	
	db  42h	
	db  7Fh	
	db  40h	
	db    0	
	db    0	
;2 
	db  70h	
	db  49h	
	db  49h	
	db  49h	
	db  46h	
	db    0	
;3 
	db  21h	
	db  41h	
	db  49h	
	db  4Dh	
	db  33h	
	db    0	
;4 
	db  18h	
	db  14h	
	db  12h	
	db  7Fh	
	db  10h	
	db    0	
;5 
	db  27h	
	db  45h	
	db  45h	
	db  45h	
	db  39h	
	db    0	
;6 
	db  3Ch	
	db  52h	
	db  49h	
	db  49h	
	db  31h	
	db    0	
;7 
	db  41h	
	db  21h	
	db  11h	
	db    9	
	db    7	
	db    0	
;8 
	db  36h	
	db  49h	
	db  49h	
	db  49h	
	db  36h	
	db    0	
;9 
	db  46h	
	db  49h	
	db  49h	
	db  29h	
	db  1Eh	
	db    0	
;: 
	db    0	
	db    0	
	db  14h	
	db    0	
	db    0	
	db    0	
;; 
	db    0	
	db  40h	
	db  34h	
	db    0	
	db    0	
	db    0	
;< 
	db    8	
	db  14h	
	db  22h	
	db  41h	
	db    0	
	db    0	
;= 
	db  14h	
	db  14h	
	db  14h	
	db  14h	
	db  14h	
	db    0	
;> 
	db    0	
	db  41h	
	db  22h	
	db  14h	
	db    8	
	db    0	
;? 
	db    2	; 00000010
	db    1	; 00000001
	db  59h	; 01011001
	db    9	; 00001001
	db    6	; 00001010 
	db    0	; 
;@ 
	db  3Eh	; 00111110
	db  41h	; 01000001
	db  5Dh	; 01011101
	db  55h	; 01010101
	db  1Eh	; 00011110
	db  0h	;
;A
	db  7Ch	; 01111100 
	db  12h	; 00010010
	db  11h	; 00010001 
	db  12h	; 00010010 
	db  7Ch	; 01111100
	db    0	; 
;B 
	db  7Fh	
	db  49h	
	db  49h	
	db  49h	
	db  36h	
	db    0	
;C 
	db  3Eh	
	db  41h	
	db  41h	
	db  41h	
	db  22h	
	db    0	
;D 
	db  7Fh	
	db  41h	
	db  41h	
	db  41h	
	db  3Eh	
	db    0	
;E 
	db  7Fh	
	db  49h	
	db  49h	
	db  49h	
	db  41h	
	db    0	
;F 
	db  7Fh	
	db    9	
	db    9	
	db    9	
	db    1	
	db    0	
;G 
	db  3Eh	
	db  41h	
	db  41h	
	db  51h	
	db  73h	
	db    0	
;H 
	db  7Fh	
	db    8	
	db    8	
	db    8	
	db  7Fh	
	db    0	
;I 
	db    0	
	db  41h	
	db  7Fh	
	db  41h	
	db    0	
	db    0	
;J  
	db  20h	
	db  40h	
	db  40h	
	db  40h	
	db  3Fh	
	db    0	
;K 
	db  7Fh	
	db    8	
	db  14h	
	db  22h	
	db  41h	
	db    0	
;L 
	db  7Fh	
	db  40h	
	db  40h	
	db  40h	
	db  40h	
	db    0	
;M 
	db  7Fh	
	db    2	
	db  1Ch	
	db    2	
	db  7Fh	
	db    0	
;N 
	db  7Fh	
	db    4	
	db    8	
	db  10h	
	db  7Fh	
	db    0	
;O 
	db  3Eh	
	db  41h	
	db  41h	
	db  41h	
	db  3Eh	
	db    0	
;P 
	db  7Fh	
	db    9	
	db    9	
	db    9	
	db    6	
	db    0	
;Q 
	db  3Eh	
	db  41h	
	db  51h	
	db  21h	
	db  5Eh	
	db    0	
;R 
	db  7Fh	
	db    9	
	db  19h	
	db  29h	
	db  46h	
	db    0	
;S 
	db  26h	
	db  49h	
	db  49h	
	db  49h	
	db  32h	
	db    0	
;T 
	db    1	
	db    1	
	db  7Fh	
	db    1	
	db    1	
	db    0	
;U 
	db  3Fh	
	db  40h	
	db  40h	
	db  40h	
	db  3Fh	
	db    0	
;V 
	db    7	
	db  18h	
	db  60h	
	db  18h	
	db    7	
	db    0	
;W 
	db  3Fh	
	db  40h	
	db  38h	
	db  40h	
	db  3Fh	
	db    0	
;X 
	db  63h	
	db  14h	
	db    8	
	db  14h	
	db  63h	
	db    0	
;Y 
	db    3	
	db    4	
	db  78h	
	db    4	
	db    3	
	db    0	
;Z 
	db  61h	; 01100001
	db  51h	; 01010001
	db  49h	; 00101001
	db  45h	; 00100101
	db  43h	; 00100011
	db    0	; 
;[ 
	db    0h	;  
	db    7Fh	;  
	db    41h	;  
	db    41h	;  
	db    0	;  
	db    0	; 
;\ 
	db    2	; 00000010
	db    4	; 00000100 
	db    8	; 00001000 
	db    10h	; 00010000 
	db    20h	; 00100000 
	db    0	; 
;] 
	db    0	;  
	db    41h	;  
	db    41h	;  
	db    7Fh	;  
	db    0	;  
	db    0	;  
;^
	db    4	; 00000100 
	db    2	; 00000010 
	db    1	; 00000001 
	db    2	; 00000010 
	db    4	; 00000100 
	db    0	; 
;_ 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    0	; 
;`
	db    0	;  
	db    0	;  
	db    3	; 00000011 
	db    5	; 00000101 
	db    0	;  
	db    0	;  
;a 
	db  20h	; 00100000
	db  54h	; 01010100
	db  54h	; 01010100 
	db  54h	; 01010100 
	db  78h	; 01111000
	db    0	; 
;b 
	db  7Fh	; 01111111
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  38h	; 00111000
	db    0	; 
;c 
	db  38h	; 00111000
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db    0	; 
;d 
	db  738h	; 00111000
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  7Fh	; 01111111
	db    0	; 
;e 
	db  38h	; 00111000
	db  54h	; 01010100
	db  54h	; 01010100
	db  54h	; 01010100
	db  18h	; 00011000
	db    0	; 
;f 
	db  04h	; 00000100
	db   04h	; 00000100 
	db    7Eh	; 01111110
	db    05h	; 00000101 
	db    05h	; 00000101 
	db    0	; 
;g 
	db  08h	; 00001000
	db  54h	; 01010100
	db  54h	; 01010100
	db  54h	; 01010100
	db  73Ch	; 00111100
	db    0	; 
;h 
	db  7Fh	; 01111111
	db    8	; 00001000 
	db    4	; 00000100 
	db    4	; 00000100 
	db  78h	; 01111000
	db    0	; 
;i 
	db    0	;  
	db  44h	; 01000100
	db  7Dh	; 01111101
	db  40h	; 01000000
	db    0	;  
	db    0	; 
;j 
	db  20h	; 00100000 
	db  40h	; 01000000
	db  44h	; 01000100
	db  3Dh	; 00111101
	db  0h	; 
	db    0	; 
;k 
	db  7Fh	; 01111111
	db  10h	; 00010000 
	db  28h	; 00101000 
	db  44h	; 01000100
	db  0h	; 
	db    0	; 
;l 
	db  0h	; 
	db  41h	; 01000001
	db  7Fh	; 01111111
	db  40h	; 01000000
	db  0h	; 
	db    0	; 
;m 
	db  7Ch	; 01111100
	db    04h	; 00000100 
	db  78h	; 01111000 
	db    4	; 00000100 
	db  78h	; 01111000
	db    0	; 
;n 
	db  7Ch	; 01111100
	db    8	; 00001000 
	db    4	; 00000100 
	db  04h	; 00000100 
	db  78h	; 01111000
	db    0	; 
;o 
	db  38h	; 00111000
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  38h	; 00111000
	db    0	; 
;p 
	db  7Ch	; 01111100
	db    14h	; 00010100 
	db    14h	; 00010100 
	db    14h	; 00010100 
	db    8	; 00001000 
	db    0	; 
;q 
	db  08h	; 00001000
	db  14h	; 00010100
	db  14h	; 00010100
	db  14h	; 00010100
	db  7Ch	; 01111100
	db    0	; 
;r 
	db  7Ch	; 01111100
	db    8	; 00001000 
	db  04h	; 00000100 
	db  04h	; 00000100
	db  0		; 
	db    0	; 
;s 
	db  48h	; 01001000
	db  54h	; 01010100
	db  54h	; 01010100
	db  54h	; 01010100
	db  20h	; 00100000
	db    0	; 
;t 
	db    4	; 00000100 
	db    4	; 00000100 
	db  3Fh	; 00111111
	db    44h	; 01000100
	db    44h	; 01000100
	db    0	; 
;u 
	db  3Ch	; 00111100
	db  40h	; 01000000
	db  40h	; 01000000
	db  20h	; 00100000
	db  7Ch	; 01111100
	db    0	; 
;v 
	db    1Ch	; 00011100 
	db  20h	; 00100000 
	db  40h	; 01000000
	db  20h	; 00100000 
	db    1Ch	; 00011100 
	db    0	;  
;w
	db  3Ch	; 00111100
	db  40h	; 01000000
	db  30h	; 00110000
	db  40h	; 01000000
	db  3Ch	; 00111100
	db    0	;  
;x
	db  44h	; 01000100
	db  28h	; 00101000 
	db    10h	; 00010000 
	db  28h	; 00101000 
	db  44h	; 01000100
	db    0	;  
;y
	db    0Ch	; 00001100 
	db    50h	; 01010000 
	db  50h	; 01010000
	db    50h	; 01010000 
	db    3Ch	; 00111100
	db    0	;  
;z
	db  44h	; 01000100
	db  64h	; 01100100
	db  54h	; 01010100
	db  4Ch	; 01001100
	db  44h	; 01000100
	db    0	; 
;{ 
	db    0	;  
	db    8	; 00001000 
	db    36h	; 00110110 
	db    41h	; 01000001 
	db    41h	; 01000001 
	db    0	;  
;|
	db    0	;  
	db    0	;  
	db    7Fh	;  
	db    0	;  
	db    0	;  
	db    0	;  
;}
	db    41h	; 01000001 
	db    41h	; 01000001 
	db    36h	; 00110110 
	db    8	; 00001000 
	db    0	;  
	db    0	;
;~
	db    2	; 00000010
	db    1	; 00000001
	db    2	; 00000010
	db    4	; 00000100
	db    2	; 00000010
	db    0	;
; last 7 bit ASCII character
         db 7Fh
         db 7Fh
         db 7Fh
         db 7Fh
         db 7Fh
         db 0
; End of Font table

u can see the Letter in the Comments

i will explain you in short how this Device work

let Write the b

u have that

Code:

;b 
	db  7Fh	; 01111111
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  38h	; 00111000
	db    0	;

u need to Seletect the First Columm using the 3 pins connected to 74ls164
then u send the 7Fh ; 01111111 in the Rows.
and Select the second Columm & send the 44h ; 01000100
etc etc

if you look like -> that
u can see a b

Code:

the Led need to Blink Very Quickly to seem On in the same Time
the pc can do that
but your soft need to stay in a Endless Loop to leave the Message on

to scrolle it
u need only to change from Colum 1 to 2 and 2 to 3 etc etc

Regard
i hope i helped you a little

shafee001 · Mar 30, 2005

i am very implressed of your assemply code;
i will try to translate it to c+ then post to you again,
wirhing you the best of luck

Compy · Apr 1, 2005

tx for the help

but i needed to know the architecture of the code
it would be nice if all code is translated..

btw Thanks again

Compy · Apr 2, 2005

Hi what if i want to transfer this project to USB
need resources and diagrams

Thanks

x.x!! · Apr 8, 2006

can i use this code in assembly language

Cortex said:

Here is the Default Fonts

Code:

Font	db    0	; NUL  Ascii character
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;01 ASCII code
	db    1	
	db    1	
	db    1	
	db    1
	db    1	
	db    1	
;02 
	db    2	
	db    2 
	db    2	
	db    2 
	db    2	
	db    2	
;03
	db  3h	
	db  3h	
	db  3h	
	db  3h	
	db  3h	
	db    3	
;04 
	db  4h	
	db  4h	
	db  4h	
	db  4h	
	db  4h	
	db    4	
;05
	db  5h	
	db  5h	
	db    5	
	db  5h	
	db  5h	
	db    5	
;06
	db  6h	
	db  6h	
	db  6h	
	db  6h	
	db  6h	
	db    6	
;07
	db    07	
	db    07	
	db    7	
	db    07	
	db    07	
	db    07	
;08 
	db  8h	
	db  8h	
	db  8h	
	db    08	
	db    08	
	db    08	
;09 
	db    09	
	db    09	
	db  9h	
	db  9h	
	db  9h	
	db    9	
;0A
	db  0Ah	
	db  0Ah	
	db  0Ah	
	db  0Ah	
	db  0Ah	
	db    0Ah	
;0B 
	db    0Bh	
	db    0bh	
	db  0Bh	
	db    0Bh	
	db    0Bh	
	db    0Bh	
;0C 
	db    0Ch	
	db  0Ch	
	db  0Ch	
	db    0Ch	
	db    0Ch	
	db    0Ch	
;0D 
	db    0Dh	
	db    0Dh	
	db    0Dh	
	db    0Dh	
	db    0Dh	
	db    0Dh	
;0E 
	db    0Eh	
	db    0Eh	
	db 	0Eh	
	db    0Eh	
	db    0Eh	
	db    0Eh	
;0F 
	db  0Fh	
	db  0Fh	
	db   0Fh	
	db   0Fh	
	db    0Fh	
	db    0Fh	
;10
	db    0 
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;11 
	db    0	
	db    0	
	db    0	
	db  	0	
	db    0	
	db    0	
;12 
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;13
	db  14h	
	db  7Fh	
	db  14h	
	db  7Fh	
	db  14h	
	db    0	
;14 
	db  24h	
	db  2Ah	
	db  7Fh	
	db  2Ah	
	db  12h	
	db    0	
;15
	db  23h	
	db  13h	
	db    8	
	db  64h	
	db  62h	
	db    0	
;16
	db  36h	
	db  49h	
	db  56h	
	db  20h	
	db  50h	
	db    0	
;17
	db    0	
	db    0	
	db    7	
	db    0	
	db    0	
	db    0	
;18 
	db  1Ch	
	db  22h	
	db  41h	
	db    0	
	db    0	
	db    0	
;19 
	db    0	
	db    0	
	db  41h	
	db  22h	
	db  1Ch	
	db    0	
;1A
	db  22h	
	db  14h	
	db  7Fh	
	db  14h	
	db  22h	
	db    0	
;1B 
	db    8	
	db    8	
	db  3Eh	
	db    8	
	db    8	
	db    0	
;1C 
	db    0	
	db  40h	
	db  30h	
	db    0	
	db    0	
	db    0	
;1D 
	db    8	
	db    8	
	db    8	
	db    8	
	db    8	
	db    0	
;1E 
	db    0	
	db    0	
	db  40h	
	db    0	
	db    0	
	db    0	
;1F 
	db  20h	
	db  10h	
	db    8	
	db    4	
	db    2	
	db    0	
;20 ASCII Space character
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
	db    0	
;! 
	db    0	;  
	db    0	;  
	db    0	;  
	db  5Fh	; 01011111
	db    0	; 
	db    0	; 
;" 
	db    0	;  
	db    7	; 00000111 
	db    0	;  
	db    7	; 00000111 
	db    0	;  
	db    0	;  
;#
	db  14h	; 00010100
	db  7Fh	; 01111111
	db  14h	; 00010100 
	db  7Fh	; 01111111
	db  14h	; 00010100
	db    0	; 
;$ 
	db  24h	; 00100100
	db  2Ah	; 00101010
	db  7Fh	; 01111111
	db  2Ah	; 00101010
	db  12h	; 00010010 
	db    0	; 
;%
	db  23h	; 00100011
	db  13h	; 00010011 
	db    8	; 00001000 
	db  64h	; 01101000
	db  62h	; 01100010
	db    0	; 
;&
	db  36h	; 00110110
	db  49h	; 01001001
	db  56h	; 01010110
	db  20h	; 00100000
	db  50h	; 01010000
	db    0	; 
;'
	db    0	;  
	db    0	;  
	db    7	; 00000111 
	db    0	;  
	db    0	;  
	db    0	; 
;( 
	db  1Ch	; 00011100
	db  22h	; 00100010
	db  41h	; 01000001
	db    0	;  
	db    0	;  
	db    0	; 
;) 
	db    0	;  
	db    0	;  
	db  41h	; 01000001
	db  22h	; 00100010
	db  1Ch	; 00011100 
	db    0	; 
;*
	db  22h	; "
	db  14h	;  
	db  7Fh	; 
	db  14h	;  
	db  22h	; "
	db    0	; 
;+ 
	db    8	; 00001000
	db    8	; 00001000 
	db  3Eh	; 00111110
	db    8	; 00001000 
	db    8	; 00001000 
	db    0	; 
;, 
	db    0	;  
	db  40h	; 00100000
	db  30h	; 00110000
	db    0	;  
	db    0	;  
	db    0	; 
;- 
	db    8	; 00001000 
	db    8	; 00001000 
	db    8	; 00001000 
	db    8	; 00001000 
	db    8	; 00001000 
	db    0	; 
;. 
	db    0	;  
	db    0	;  
	db  40h	; 01000000
	db    0	;  
	db    0	;  
	db    0	; 
;/ 
	db  20h	; 00100000 
	db  10h	; 00010000 
	db    8	; 00001000 
	db    4	; 00000100 
	db    2	; 00000010 
	db    0	; 
;0 
	db  3Eh	
	db  51h	
	db  49h	
	db  45h	
	db  3Eh	
	db    0	
;1 
	db    0	
	db  42h	
	db  7Fh	
	db  40h	
	db    0	
	db    0	
;2 
	db  70h	
	db  49h	
	db  49h	
	db  49h	
	db  46h	
	db    0	
;3 
	db  21h	
	db  41h	
	db  49h	
	db  4Dh	
	db  33h	
	db    0	
;4 
	db  18h	
	db  14h	
	db  12h	
	db  7Fh	
	db  10h	
	db    0	
;5 
	db  27h	
	db  45h	
	db  45h	
	db  45h	
	db  39h	
	db    0	
;6 
	db  3Ch	
	db  52h	
	db  49h	
	db  49h	
	db  31h	
	db    0	
;7 
	db  41h	
	db  21h	
	db  11h	
	db    9	
	db    7	
	db    0	
;8 
	db  36h	
	db  49h	
	db  49h	
	db  49h	
	db  36h	
	db    0	
;9 
	db  46h	
	db  49h	
	db  49h	
	db  29h	
	db  1Eh	
	db    0	
;: 
	db    0	
	db    0	
	db  14h	
	db    0	
	db    0	
	db    0	
;; 
	db    0	
	db  40h	
	db  34h	
	db    0	
	db    0	
	db    0	
;< 
	db    8	
	db  14h	
	db  22h	
	db  41h	
	db    0	
	db    0	
;= 
	db  14h	
	db  14h	
	db  14h	
	db  14h	
	db  14h	
	db    0	
;> 
	db    0	
	db  41h	
	db  22h	
	db  14h	
	db    8	
	db    0	
;? 
	db    2	; 00000010
	db    1	; 00000001
	db  59h	; 01011001
	db    9	; 00001001
	db    6	; 00001010 
	db    0	; 
;@ 
	db  3Eh	; 00111110
	db  41h	; 01000001
	db  5Dh	; 01011101
	db  55h	; 01010101
	db  1Eh	; 00011110
	db  0h	;
;A
	db  7Ch	; 01111100 
	db  12h	; 00010010
	db  11h	; 00010001 
	db  12h	; 00010010 
	db  7Ch	; 01111100
	db    0	; 
;B 
	db  7Fh	
	db  49h	
	db  49h	
	db  49h	
	db  36h	
	db    0	
;C 
	db  3Eh	
	db  41h	
	db  41h	
	db  41h	
	db  22h	
	db    0	
;D 
	db  7Fh	
	db  41h	
	db  41h	
	db  41h	
	db  3Eh	
	db    0	
;E 
	db  7Fh	
	db  49h	
	db  49h	
	db  49h	
	db  41h	
	db    0	
;F 
	db  7Fh	
	db    9	
	db    9	
	db    9	
	db    1	
	db    0	
;G 
	db  3Eh	
	db  41h	
	db  41h	
	db  51h	
	db  73h	
	db    0	
;H 
	db  7Fh	
	db    8	
	db    8	
	db    8	
	db  7Fh	
	db    0	
;I 
	db    0	
	db  41h	
	db  7Fh	
	db  41h	
	db    0	
	db    0	
;J  
	db  20h	
	db  40h	
	db  40h	
	db  40h	
	db  3Fh	
	db    0	
;K 
	db  7Fh	
	db    8	
	db  14h	
	db  22h	
	db  41h	
	db    0	
;L 
	db  7Fh	
	db  40h	
	db  40h	
	db  40h	
	db  40h	
	db    0	
;M 
	db  7Fh	
	db    2	
	db  1Ch	
	db    2	
	db  7Fh	
	db    0	
;N 
	db  7Fh	
	db    4	
	db    8	
	db  10h	
	db  7Fh	
	db    0	
;O 
	db  3Eh	
	db  41h	
	db  41h	
	db  41h	
	db  3Eh	
	db    0	
;P 
	db  7Fh	
	db    9	
	db    9	
	db    9	
	db    6	
	db    0	
;Q 
	db  3Eh	
	db  41h	
	db  51h	
	db  21h	
	db  5Eh	
	db    0	
;R 
	db  7Fh	
	db    9	
	db  19h	
	db  29h	
	db  46h	
	db    0	
;S 
	db  26h	
	db  49h	
	db  49h	
	db  49h	
	db  32h	
	db    0	
;T 
	db    1	
	db    1	
	db  7Fh	
	db    1	
	db    1	
	db    0	
;U 
	db  3Fh	
	db  40h	
	db  40h	
	db  40h	
	db  3Fh	
	db    0	
;V 
	db    7	
	db  18h	
	db  60h	
	db  18h	
	db    7	
	db    0	
;W 
	db  3Fh	
	db  40h	
	db  38h	
	db  40h	
	db  3Fh	
	db    0	
;X 
	db  63h	
	db  14h	
	db    8	
	db  14h	
	db  63h	
	db    0	
;Y 
	db    3	
	db    4	
	db  78h	
	db    4	
	db    3	
	db    0	
;Z 
	db  61h	; 01100001
	db  51h	; 01010001
	db  49h	; 00101001
	db  45h	; 00100101
	db  43h	; 00100011
	db    0	; 
;[ 
	db    0h	;  
	db    7Fh	;  
	db    41h	;  
	db    41h	;  
	db    0	;  
	db    0	; 
;\ 
	db    2	; 00000010
	db    4	; 00000100 
	db    8	; 00001000 
	db    10h	; 00010000 
	db    20h	; 00100000 
	db    0	; 
;] 
	db    0	;  
	db    41h	;  
	db    41h	;  
	db    7Fh	;  
	db    0	;  
	db    0	;  
;^
	db    4	; 00000100 
	db    2	; 00000010 
	db    1	; 00000001 
	db    2	; 00000010 
	db    4	; 00000100 
	db    0	; 
;_ 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    40h	; 01000000 
	db    0	; 
;`
	db    0	;  
	db    0	;  
	db    3	; 00000011 
	db    5	; 00000101 
	db    0	;  
	db    0	;  
;a 
	db  20h	; 00100000
	db  54h	; 01010100
	db  54h	; 01010100 
	db  54h	; 01010100 
	db  78h	; 01111000
	db    0	; 
;b 
	db  7Fh	; 01111111
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  38h	; 00111000
	db    0	; 
;c 
	db  38h	; 00111000
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db    0	; 
;d 
	db  738h	; 00111000
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  7Fh	; 01111111
	db    0	; 
;e 
	db  38h	; 00111000
	db  54h	; 01010100
	db  54h	; 01010100
	db  54h	; 01010100
	db  18h	; 00011000
	db    0	; 
;f 
	db  04h	; 00000100
	db   04h	; 00000100 
	db    7Eh	; 01111110
	db    05h	; 00000101 
	db    05h	; 00000101 
	db    0	; 
;g 
	db  08h	; 00001000
	db  54h	; 01010100
	db  54h	; 01010100
	db  54h	; 01010100
	db  73Ch	; 00111100
	db    0	; 
;h 
	db  7Fh	; 01111111
	db    8	; 00001000 
	db    4	; 00000100 
	db    4	; 00000100 
	db  78h	; 01111000
	db    0	; 
;i 
	db    0	;  
	db  44h	; 01000100
	db  7Dh	; 01111101
	db  40h	; 01000000
	db    0	;  
	db    0	; 
;j 
	db  20h	; 00100000 
	db  40h	; 01000000
	db  44h	; 01000100
	db  3Dh	; 00111101
	db  0h	; 
	db    0	; 
;k 
	db  7Fh	; 01111111
	db  10h	; 00010000 
	db  28h	; 00101000 
	db  44h	; 01000100
	db  0h	; 
	db    0	; 
;l 
	db  0h	; 
	db  41h	; 01000001
	db  7Fh	; 01111111
	db  40h	; 01000000
	db  0h	; 
	db    0	; 
;m 
	db  7Ch	; 01111100
	db    04h	; 00000100 
	db  78h	; 01111000 
	db    4	; 00000100 
	db  78h	; 01111000
	db    0	; 
;n 
	db  7Ch	; 01111100
	db    8	; 00001000 
	db    4	; 00000100 
	db  04h	; 00000100 
	db  78h	; 01111000
	db    0	; 
;o 
	db  38h	; 00111000
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  38h	; 00111000
	db    0	; 
;p 
	db  7Ch	; 01111100
	db    14h	; 00010100 
	db    14h	; 00010100 
	db    14h	; 00010100 
	db    8	; 00001000 
	db    0	; 
;q 
	db  08h	; 00001000
	db  14h	; 00010100
	db  14h	; 00010100
	db  14h	; 00010100
	db  7Ch	; 01111100
	db    0	; 
;r 
	db  7Ch	; 01111100
	db    8	; 00001000 
	db  04h	; 00000100 
	db  04h	; 00000100
	db  0		; 
	db    0	; 
;s 
	db  48h	; 01001000
	db  54h	; 01010100
	db  54h	; 01010100
	db  54h	; 01010100
	db  20h	; 00100000
	db    0	; 
;t 
	db    4	; 00000100 
	db    4	; 00000100 
	db  3Fh	; 00111111
	db    44h	; 01000100
	db    44h	; 01000100
	db    0	; 
;u 
	db  3Ch	; 00111100
	db  40h	; 01000000
	db  40h	; 01000000
	db  20h	; 00100000
	db  7Ch	; 01111100
	db    0	; 
;v 
	db    1Ch	; 00011100 
	db  20h	; 00100000 
	db  40h	; 01000000
	db  20h	; 00100000 
	db    1Ch	; 00011100 
	db    0	;  
;w
	db  3Ch	; 00111100
	db  40h	; 01000000
	db  30h	; 00110000
	db  40h	; 01000000
	db  3Ch	; 00111100
	db    0	;  
;x
	db  44h	; 01000100
	db  28h	; 00101000 
	db    10h	; 00010000 
	db  28h	; 00101000 
	db  44h	; 01000100
	db    0	;  
;y
	db    0Ch	; 00001100 
	db    50h	; 01010000 
	db  50h	; 01010000
	db    50h	; 01010000 
	db    3Ch	; 00111100
	db    0	;  
;z
	db  44h	; 01000100
	db  64h	; 01100100
	db  54h	; 01010100
	db  4Ch	; 01001100
	db  44h	; 01000100
	db    0	; 
;{ 
	db    0	;  
	db    8	; 00001000 
	db    36h	; 00110110 
	db    41h	; 01000001 
	db    41h	; 01000001 
	db    0	;  
;|
	db    0	;  
	db    0	;  
	db    7Fh	;  
	db    0	;  
	db    0	;  
	db    0	;  
;}
	db    41h	; 01000001 
	db    41h	; 01000001 
	db    36h	; 00110110 
	db    8	; 00001000 
	db    0	;  
	db    0	;
;~
	db    2	; 00000010
	db    1	; 00000001
	db    2	; 00000010
	db    4	; 00000100
	db    2	; 00000010
	db    0	;
; last 7 bit ASCII character
         db 7Fh
         db 7Fh
         db 7Fh
         db 7Fh
         db 7Fh
         db 0
; End of Font table

u can see the Letter in the Comments

i will explain you in short how this Device work

let Write the b

u have that

Code:

;b 
	db  7Fh	; 01111111
	db  44h	; 01000100
	db  44h	; 01000100
	db  44h	; 01000100
	db  38h	; 00111000
	db    0	;

u need to Seletect the First Columm using the 3 pins connected to 74ls164
then u send the 7Fh ; 01111111 in the Rows.
and Select the second Columm & send the 44h ; 01000100
etc etc

if you look like -> that
u can see a b

Code:

the Led need to Blink Very Quickly to seem On in the same Time
the pc can do that
but your soft need to stay in a Endless Loop to leave the Message on

to scrolle it
u need only to change from Colum 1 to 2 and 2 to 3 etc etc

Regard
i hope i helped you a little

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LED Scrolling Message Source Code

Compy

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aryajur

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Cortex

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shafee001

Advanced Member level 4

fidelisfidelis

Compy

Member level 2

Compy

Member level 2

eeye

Cortex

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shafee001

Advanced Member level 4

Compy

Member level 2

Compy

Member level 2

x.x!!

Newbie level 2

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