Problem with Disp7sPort

Hello, i have a problem with Disp7sPort.
I´m running two 7seg digits nonmuxed with one TPIC6B595 Shift-register on each digit. The IC is equal , similar to 74HC595 but it can run big loads. I have connected the hardware like the example in DocuStdDriver.pdf. The problem is i only got one digit to work. always the second one in the chain, when i connect the Shift-registers the other way, swap the serial input and output between the shiftregisters the other digit works. So the hardware must be ok. Have i forgot something in the code? Or does the TPIC6B595 Shift-register not work with this Disp7sPort? Have anyone tried that IC?

My testprogram.

program test;

{$NOSHADOW}
{ $WG} {global Warnings off}

Device = mega168, VCC=5;
{ $BOOTRST $01C00} {Reset Jump to $01C00}

Define_Fuses
// Override_Fuses;
NoteBook = A;
COMport = USB;
LockBits0 = [];
FuseBits0 = [];
FuseBits1 = [];
FuseBits2 = [];

Import SysTick, Disp7sPort;

From System Import ;


Define
ProcClock = 16000000; {Hertz}
SysTick = 10; {msec}
StackSize = $0032, iData;
FrameSize = $0032, iData;
Disp7sPort = PortC, nonMux; {not multiplexed, Portbit}
DispMode = ShiftRight ;
DispDigits = 2, iData;

Implementation

{$IDATA}

{--------------------------------------------------------------}
{ Type Declarations }

type


{--------------------------------------------------------------}
{ Const Declarations }

{--------------------------------------------------------------}
{ Var Declarations }
{$IDATA}

{--------------------------------------------------------------}
{ functions }



{--------------------------------------------------------------}
{ Main Program }
{$IDATA}

begin
EnableInts;
DISPclear;
mDelay(1000);
Write(DISPout,'12');
loop

endloop;
end test.


Kindest regards
Thomas

Hello Harry! Many thanks for the answer. Yes i have a very simple schematics on a piece of paper, i have scanned and attached it to this reply, hope it´s not to blurry. I have connected all the thing on a piece of veroboard so i don´t have a CAD schematics to share.

Kindest Regards Thomas

Hello! Thanks for the answer, and many thanks for the patience with me and taking of your time on my problem.

I tried to connect RCK to PortC,3 But then the both digits went dark.

I explored something now with my old PortC,2 - RCK-connection, when i define with use of only one digit with the same two digit hardware configuration i use.

Disp7sPort = PortC, nonMux; {not multiplexed, Portbit}
DispDigits = 1, iData;

and run this in loop

for i:=0 to 20 do
Write(DISPout,BytetoStr(i));
mDelay(700);
endfor;

the result from the first forloop shows "0" on digit one and digit two is dark.
the loops that follows in the forloop shows this result.

digit one "1" digit two "0"
digit one "2" digit two "1"
digit one "3" digit two "2"
digit one "4" digit two "3"
digit one "5" digit two "4"
digit one "6" digit two "5"

and so on. So now is the both digits working but not the way it should. Strange.

Kindest Regards.
Thomas

so with

DispDigits = 1, iData;

the second digit will never be shown.

rolf