Re: Siemens SDA5708
Not me, I don't know if you have this but I did find this page on google:
http://sbprojects.com/knowledge/footprints/sda5708.php
I know it's in Assembler, but at least it has comments and shows how to use the device.Code:;--------------------------------------------------------------------------- ; ; Demo program to interface with the SDA5708-24 alpha numeric display ; Designed to run on the 6802 Nano computer ; ; Author: San Bergmans ; www.sbprojects.com ; ;--------------------------------------------------------------------------- .CR 6800 .OR $F000 .TF SDA5708.S19,S19,32 ;--------------------------------------------------------------------------- ; Declarations ;--------------------------------------------------------------------------- PIA_A .EQ $80 PIA Port A data register PIA_B .EQ $81 PIA Port B data register CON_A .EQ $82 PIA Port A control register CON_B .EQ $83 PIA Port B control register ; PIA_A.0 = Display's -Reset line Output ; PIA_A.1 = Display's -Load line Output ; PIA_A.2 = Display's Clock line Output ; PIA_A.3 = Display's Data line Output TEMP .EQ $00,$01 Used as temporary data register SHIFT_DATA .EQ $00 Data to be shifted out BIT_COUNT .EQ $01 Data bit counter SAVE_X .EQ $02,$03 Location to save the X register CURSOR .EQ $04 Character pointer (0..7) SDA_BRIGHT .EQ %1110.0000 Control word value for brightness ;--------------------------------------------------------------------------- ; ROUTINE : RESET ; FUNCTION : Get started ;--------------------------------------------------------------------------- RESET LDS #$007F Initialize the stack LDAA #%0000.0100 PIA_A bits 0..3 are going to be STAA CON_A outputs. But before we switch mode LDAB #%0000.1111 we must ensure that the data STAB PIA_A register holds 1's to avoid spikes CLRA Now it's save to switch from inputs STAA CON_A STAB PIA_A LDAA #%0000.0100 Finally select data register again STAA CON_A LDAA #%1111.1110 Send a -Reset signal to the display STAA PIA_A LDAA #%1111.1111 STAA PIA_A LDAA #SDA_BRIGHT Set preselected display brightness JSR WRITE_DSP CLRA Reset cursor to 0 STAA CURSOR ;--------------------------------------------------------------------------- ; ROUTINE : MAIN ; FUNCTION : Main program loop ;--------------------------------------------------------------------------- MAIN LDX #TEXT Load text pointer in index register LDAA 0,X Print 1st character JSR ASCII_2_DSP LDAA 1,X Print 2nd character JSR ASCII_2_DSP LDAA 2,X Print 3rd character JSR ASCII_2_DSP LDAA 3,X Print 4th character JSR ASCII_2_DSP LDAA 4,X Print 5th character JSR ASCII_2_DSP LDAA 5,X Print 6th character JSR ASCII_2_DSP LDAA 6,X Print 7th character JSR ASCII_2_DSP LDAA 7,X Print last character JSR ASCII_2_DSP .4EVER JMP .4EVER TEXT .AS "SDA-5708" This text is displayed! ;--------------------------------------------------------------------------- ; ROUTINE : WRITE_DSP ; FUNCTION : Write 8 bit data in A to display controler ;--------------------------------------------------------------------------- WRITE_DSP PSHA Save affected registers PSHB STAA SHIFT_DATA LDAB #8 Setup bit counter STAB BIT_COUNT LDAB PIA_A Get a copy of current PIA lines ANDB #%1111.1011 Make Clock line low STAB PIA_A ANDB #%1111.1101 Make LOAD line low STAB PIA_A .LOOP ORAB #%0000.1000 In case data must be high LSRA SHIFT_DATA Get databit BCS .BIT_HIGH Data must be high! ANDB #%1111.0111 Make data bit low .BIT_HIGH STAB PIA_A ORAB #%0000.0100 Pulse clock line high/low STAB PIA_A ANDB #%1111.1011 STAB PIA_A DEC BIT_COUNT Do all bits BNE .LOOP ORAB #%0000.0010 Make LOAD line high again which STAB PIA_A copies shift register to display ORAB #%0000.1100 Finally make clock+data high STAB PIA_A PULB Restore affected registers PULA RTS ;--------------------------------------------------------------------------- ; ROUTINE : ASCII_2_DSP ; FUNCTION : Send ASCII to current digit ; A = ASCII character ; CURSOR = Digit to print to ; CURSOR is incremented afterwards (wraps to 0 after 7) ;--------------------------------------------------------------------------- ASCII_2_DSP PSHA Save affected registers PSHB STX SAVE_X TAB Save ASCII character in B LDAA CURSOR Setup display pointer ORAA #%1010.0000 Make it a digit selector JSR WRITE_DSP Send digit address to display SUBB #' ' Table starts at space, skipping the CLRA control characters STAB TEMP+1 Save Character-" " ASLB Each table entery is 7 bytes long ROLA so we must multiply the character ASLB by 7 before we can use it as index ROLA ASLB ROLA SUBB TEMP+1 We multiplied by 8 instead of 7, so SBCA #0 we'll have to subtract once ADDB #ASCII_TABLE Add ASCII table offset to the index ADCA /ASCII_TABLE STAA TEMP Then use it as an index STAB TEMP+1 LDX TEMP LDAB #7 Count the number of display rows .LOOP LDAA 0,X Get bit pattern JSR WRITE_DSP and write it to the display INX Increment table index DECB Decrement row pointer BNE .LOOP Continue until all rows are done LDAA CURSOR Increment the display's cursor INCA but limit range from 0 to 7 ANDA #%0000.0111 STAA CURSOR LDX SAVE_X Restore the affected registers PULB again PULA RTS ;--------------------------------------------------------------------------- ; ASCII TABLE ;--------------------------------------------------------------------------- ASCII_TABLE .DA #%00000 Space $20 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00100 ! $21 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00000 .DA #%00100 .DA #%01010 " $22 .DA #%01010 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%01010 # $23 .DA #%01010 .DA #%11111 .DA #%01010 .DA #%11111 .DA #%01010 .DA #%01010 .DA #%00100 $ $24 .DA #%01111 .DA #%10100 .DA #%01110 .DA #%00101 .DA #%11110 .DA #%00100 .DA #%11000 % $25 .DA #%11001 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%10011 .DA #%00011 .DA #%00000 & $26 .DA #%01000 .DA #%10100 .DA #%01000 .DA #%10101 .DA #%10010 .DA #%01101 .DA #%00100 ' $27 .DA #%00100 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00010 ( $28 .DA #%00100 .DA #%01000 .DA #%01000 .DA #%01000 .DA #%00100 .DA #%00010 .DA #%01000 ) $29 .DA #%00100 .DA #%00010 .DA #%00010 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%00000 * $2A .DA #%10101 .DA #%01110 .DA #%00100 .DA #%01110 .DA #%10101 .DA #%00000 .DA #%00000 + $2B .DA #%00100 .DA #%00100 .DA #%11111 .DA #%00100 .DA #%00100 .DA #%00000 .DA #%00000 , $2C .DA #%00000 .DA #%00000 .DA #%00000 .DA #%01100 .DA #%00100 .DA #%01000 .DA #%00000 - $2D .DA #%00000 .DA #%00000 .DA #%11111 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 . $2E .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%01100 .DA #%01100 .DA #%00000 / $2F .DA #%00001 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%10000 .DA #%00000 .DA #%00100 0 $30 .DA #%01010 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01010 .DA #%00100 .DA #%00100 1 $31 .DA #%01100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%01110 .DA #%01110 2 $32 .DA #%10001 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%10000 .DA #%11111 .DA #%11111 3 $33 .DA #%00001 .DA #%00010 .DA #%00110 .DA #%00001 .DA #%10001 .DA #%01110 .DA #%00010 4 $34 .DA #%00110 .DA #%01010 .DA #%10010 .DA #%11111 .DA #%00010 .DA #%00010 .DA #%11111 5 $35 .DA #%10000 .DA #%10000 .DA #%11110 .DA #%00001 .DA #%10001 .DA #%01110 .DA #%01111 6 $36 .DA #%10000 .DA #%10000 .DA #%11110 .DA #%10001 .DA #%10001 .DA #%01110 .DA #%11111 7 $37 .DA #%00001 .DA #%00010 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%01110 8 $38 .DA #%10001 .DA #%10001 .DA #%01110 .DA #%10001 .DA #%10001 .DA #%01110 .DA #%01110 9 $39 .DA #%10001 .DA #%10001 .DA #%01111 .DA #%00001 .DA #%00001 .DA #%11110 .DA #%00000 : $3A .DA #%01100 .DA #%01100 .DA #%00000 .DA #%01100 .DA #%01100 .DA #%00000 .DA #%00000 ; $3B .DA #%01100 .DA #%01100 .DA #%00000 .DA #%01100 .DA #%00100 .DA #%01000 .DA #%00010 < $3C .DA #%00100 .DA #%01000 .DA #%10000 .DA #%01000 .DA #%00100 .DA #%00010 .DA #%00000 = $3D .DA #%00000 .DA #%11111 .DA #%00000 .DA #%11111 .DA #%00000 .DA #%00000 .DA #%01000 > $3E .DA #%00100 .DA #%00010 .DA #%00001 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%01110 ? $3F .DA #%10001 .DA #%00010 .DA #%00100 .DA #%00100 .DA #%00000 .DA #%00100 .DA #%01110 @ $40 .DA #%10001 .DA #%10101 .DA #%10111 .DA #%10000 .DA #%10001 .DA #%01110 .DA #%00100 A $41 .DA #%01010 .DA #%10001 .DA #%11111 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%11110 B $42 .DA #%01001 .DA #%01001 .DA #%01110 .DA #%01001 .DA #%01001 .DA #%11110 .DA #%01110 C $43 .DA #%10001 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%10001 .DA #%01110 .DA #%11110 D $44 .DA #%01001 .DA #%01001 .DA #%01001 .DA #%01001 .DA #%01001 .DA #%11110 .DA #%11111 E $45 .DA #%10000 .DA #%10000 .DA #%11100 .DA #%10000 .DA #%10000 .DA #%11111 .DA #%11111 F $46 .DA #%10000 .DA #%10000 .DA #%11100 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%01111 G $47 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%10111 .DA #%10001 .DA #%01110 .DA #%10001 H $48 .DA #%10001 .DA #%10001 .DA #%11111 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01110 I $49 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%01110 .DA #%01110 J $4A .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%10100 .DA #%01000 .DA #%10001 K $4B .DA #%10010 .DA #%10100 .DA #%11000 .DA #%10100 .DA #%10010 .DA #%10001 .DA #%10000 L $4C .DA #%10000 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%11111 .DA #%10001 M $4D .DA #%11011 .DA #%10101 .DA #%10101 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10001 N $4E .DA #%10001 .DA #%11001 .DA #%10101 .DA #%10011 .DA #%10001 .DA #%10001 .DA #%01110 O $4F .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01110 .DA #%11110 P $50 .DA #%10001 .DA #%10001 .DA #%11110 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%01110 Q $51 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10101 .DA #%10010 .DA #%01101 .DA #%11110 R $52 .DA #%10001 .DA #%10001 .DA #%11110 .DA #%10100 .DA #%10010 .DA #%10001 .DA #%01110 S $53 .DA #%10001 .DA #%10000 .DA #%01110 .DA #%00001 .DA #%10001 .DA #%01110 .DA #%11111 T $54 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%10001 U $55 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01110 .DA #%10001 V $56 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01010 .DA #%01010 .DA #%00100 .DA #%10001 W $57 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10101 .DA #%10101 .DA #%01010 .DA #%10001 X $58 .DA #%10001 .DA #%01010 .DA #%00100 .DA #%01010 .DA #%10001 .DA #%10001 .DA #%10001 Y $59 .DA #%10001 .DA #%01010 .DA #%01010 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%11111 Z $5A .DA #%00001 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%10000 .DA #%11111 .DA #%01111 [ $5B .DA #%01000 .DA #%01000 .DA #%01000 .DA #%01000 .DA #%01000 .DA #%01111 .DA #%00000 \ $5C .DA #%10000 .DA #%01000 .DA #%00100 .DA #%00010 .DA #%00001 .DA #%00000 .DA #%11110 ] $5D .DA #%00010 .DA #%00010 .DA #%00010 .DA #%00010 .DA #%00010 .DA #%11110 .DA #%00100 ^ $5E .DA #%01010 .DA #%10001 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 _ $5F .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%11111 .DA #%00100 ' $60 .DA #%01000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 a $61 .DA #%01110 .DA #%00001 .DA #%01101 .DA #%10011 .DA #%10001 .DA #%01111 .DA #%10000 b $62 .DA #%10000 .DA #%10000 .DA #%10110 .DA #%11001 .DA #%10001 .DA #%11110 .DA #%00000 c $63 .DA #%00000 .DA #%01111 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%01111 .DA #%00001 d $64 .DA #%00001 .DA #%00001 .DA #%01101 .DA #%10011 .DA #%10001 .DA #%01111 .DA #%00000 e $65 .DA #%00000 .DA #%01110 .DA #%10001 .DA #%11110 .DA #%10000 .DA #%01110 .DA #%00110 f $66 .DA #%01001 .DA #%01000 .DA #%11100 .DA #%01000 .DA #%01000 .DA #%01000 .DA #%00000 g $67 .DA #%01111 .DA #%10001 .DA #%10011 .DA #%01101 .DA #%00001 .DA #%01110 .DA #%10000 h $68 .DA #%10000 .DA #%10000 .DA #%10110 .DA #%11001 .DA #%10001 .DA #%10001 .DA #%00000 i $69 .DA #%00100 .DA #%00000 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00000 j $6A .DA #%00010 .DA #%00000 .DA #%00010 .DA #%00010 .DA #%10010 .DA #%01100 .DA #%10000 k $6B .DA #%10000 .DA #%10001 .DA #%10010 .DA #%11100 .DA #%10010 .DA #%10001 .DA #%01100 l $6C .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%01110 .DA #%00000 m $6D .DA #%00000 .DA #%11010 .DA #%10101 .DA #%10101 .DA #%10101 .DA #%10101 .DA #%00000 n $6E .DA #%00000 .DA #%10110 .DA #%11001 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%00000 o $6F .DA #%00000 .DA #%01110 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01110 .DA #%00000 p $70 .DA #%11110 .DA #%10001 .DA #%11001 .DA #%10110 .DA #%10000 .DA #%10000 .DA #%00000 q $71 .DA #%01111 .DA #%10001 .DA #%10011 .DA #%01101 .DA #%00001 .DA #%00001 .DA #%00000 r $72 .DA #%00000 .DA #%10110 .DA #%11001 .DA #%10000 .DA #%10000 .DA #%10000 .DA #%00000 s $73 .DA #%00000 .DA #%01111 .DA #%10000 .DA #%01110 .DA #%00001 .DA #%11110 .DA #%00100 t $74 .DA #%00100 .DA #%01110 .DA #%00100 .DA #%00100 .DA #%00101 .DA #%00010 .DA #%00000 u $75 .DA #%00000 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%10011 .DA #%01101 .DA #%00000 v $76 .DA #%00000 .DA #%10001 .DA #%10001 .DA #%10001 .DA #%01010 .DA #%00100 .DA #%00000 w $77 .DA #%00000 .DA #%10001 .DA #%10001 .DA #%10101 .DA #%10101 .DA #%01010 .DA #%00000 x $78 .DA #%00000 .DA #%10001 .DA #%01010 .DA #%00100 .DA #%01010 .DA #%10001 .DA #%00000 y $79 .DA #%00000 .DA #%10001 .DA #%10001 .DA #%01111 .DA #%00010 .DA #%01100 .DA #%00000 z $7A .DA #%00000 .DA #%11111 .DA #%00010 .DA #%00100 .DA #%01000 .DA #%11111 .DA #%00011 { $7B .DA #%00100 .DA #%00100 .DA #%01000 .DA #%00100 .DA #%00100 .DA #%00011 .DA #%00100 | $7C .DA #%00100 .DA #%00100 .DA #%00000 .DA #%00100 .DA #%00100 .DA #%00100 .DA #%11000 } $7D .DA #%00100 .DA #%00100 .DA #%00010 .DA #%00100 .DA #%00100 .DA #%11000 .DA #%01000 ~ $7E .DA #%10101 .DA #%00010 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%00000 .DA #%11111 sqaure $7F .DA #%11111 .DA #%11111 .DA #%11111 .DA #%11111 .DA #%11111 .DA #%11111 ;--------------------------------------------------------------------------- ; Vectors ;--------------------------------------------------------------------------- .OR $FFF8 .DA RESET IRQ (Not used) .DA RESET SWI (Not used) .DA RESET NMI (Not used) .DA RESET Reset .LI OFF
Robert
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