Actel FPGA programming using libero 8.1 generated SVF files

Hi

Since version 8.1 Actel provides SVF programming file generation for
A3 FPGA's but I have problems using those SVF files:

For first testing i used Xilinx IMPACT as SVF playback engine, and I
got scan data mismatch error on any actel SVF files

then i used my own SVF player and got same result

(JTAG port and Actel FPGA connections are ok, my own software can
identify chain ok)

when looking into the Actel tools generated SVF
====================================
FREQUENCY 4E6 HZ;
STATE RESET;
RUNTEST IDLE 5 TCK;
ENDIR IRPAUSE;
ENDDR DRPAUSE;
SIR 8 TDI(0F);
SDR 32 TDI(00000000);
STATE IDLE;
RUNTEST IDLE 1 TCK;
SDR 32 TDI(00000000) TDO(02A141CF) MASK(0EFFFFFF);
====================================

that SVF set IR to IDCODE (0F)
clocks out 32 bits without using return data
then without shifting anything to IR will go again shiftDR and try
read IDCODE

strange, while impact NEVER sees correct IDCODE readback, my own SVF
player
sometimes see the IDCODE returned on the second DR shift (never on
first)

Antti

On 22 Feb., 19:20, Antti <Antti.Luk...@googlemail.com> wrote:
> Hi
>
> Since version 8.1 Actel provides SVF programming file generation for
> A3 FPGA's but I have problems using those SVF files:
>
> For first testing i used Xilinx IMPACT as SVF playback engine, and I
> got scan data mismatch error on any actel SVF files
>
> then i used my own SVF player and got same result
>
> (JTAG port and Actel FPGA connections are ok, my own software can
> identify chain ok)
>
> when looking into the Actel tools generated SVF
> ====================================
> FREQUENCY 4E6 HZ;
> STATE RESET;
> RUNTEST IDLE 5 TCK;
> ENDIR IRPAUSE;
> ENDDR DRPAUSE;
> SIR 8 TDI(0F);
> SDR 32 TDI(00000000);
> STATE IDLE;
> RUNTEST IDLE 1 TCK;
> SDR 32 TDI(00000000) TDO(02A141CF) MASK(0EFFFFFF);
> ====================================
>
> that SVF set IR to IDCODE (0F)
> clocks out 32 bits without using return data
> then without shifting anything to IR will go again shiftDR and try
> read IDCODE
>
> strange, while impact NEVER sees correct IDCODE readback, my own SVF
> player
> sometimes see the IDCODE returned on the second DR shift (never on
> first)
>
> Antti

issue solved, my own SVF player does verify the A3 IDCODE correctly
when playing back actel generated SVF

Antti