在spartan 3中编写以及从可编程增益放大器读取单词调试失败

嗨，大家好....
为了接口spartan3an eval boad的“on board adc”，我首先要编写以及从可编程增益放大器读取单词....如果读取的单词与写入的单词相同，那么我将打开adc。
我正在使用chipscope pro观察结果。
我让amp_shdn ='0';
我正在读这个词，但我的adc无法继续...
我正在考虑.vhd和芯片核心波形窗口的快照......
（在波形窗口中很清楚，在比较读取字与写入字时，即data_read（8 downto 1）= pgadata ....两者具有相同的内容，但仍然如果（data_read（8 downto 1）= pgadata）
然后....条件失败）..
我已经尝试了很多东西来调试......但我找不到..
有谁能够帮助我..
任何帮助都是值得的
提前致谢
问候，
拉胡尔夏尔马
adc.txt 7 KB
adc.txt 7 KB



以下为原文

hi everyone....

To interface" on board adc" of spartan3an eval boad first i am writing as well as reading the word to/ from Programmable gain amplifier....and if read word is  same as written word then i will make the adc on .  i am observing results using chipscope pro.
i have make amp_shdn  = '0';

i am reading the word correctly but my adc could not get on...
I am atteching .vhd and a snapshot of chipscore waveform window......
( in the waveform window it is clear that at the time of comparison of read word with written word i.e  data_read( 8 downto 1) = pgadata.... both have same contents but still if( data_read( 8 downto 1) = pgadata) then....condition gets fail )..


i have been tried a lots of thing to debugg...but i could not find out ..
can anybody help me..
any help is appreciable

thanks in advance

Regards,
rahul shARMa
            adc.txt ‏7 KB                adc.txt ‏7 KB