VHDL Syntheis Problem with Quartus -II 64 : RISING_EDGE ,ERROR :10822,10028,10029

Hi Friends,

I am trying to implement a communication protocol in FPGA with VHDL. I am using Qaurtus-II 64 for logic synthesis. As a part of my implementation I had to implement a state machine for the channel coding of the protocol. The waveform has strict timing constraints , that it the reason I decided to code it in a finite state machine which cycles it state to get the requried waveform pattern.

Now here comes the problem, I successfully compiled the below code in ModelSIM simulator, but unfortunately it shows up some errors in during synthesis. I am not an experienced programmer in VHDL. any help from you guys would be really appreciable. The below are the code and the error details. I could not attach the complete code here, I removed some irrelevant part. The complete code in the attachment.

END ARCHITECTURE;

Synthesis Error:

-----------------------

Error (10822): HDL error at codec_ch_coding_CHA_src.vhd(83): couldn't implement registers for assignments on this clock edge

Error (10822): HDL error at codec_ch_coding_CHA_src.vhd(97): couldn't implement registers for assignments on this clock edge

Error (10822): HDL error at codec_ch_coding_CHA_src.vhd(111): couldn't implement registers for assignments on this clock edge

Error (10822): HDL error at codec_ch_coding_CHA_src.vhd(140): couldn't implement registers for assignments on this clock edge

Error (10822): HDL error at codec_ch_coding_CHA_src.vhd(162): couldn't implement registers for assignments on this clock edge

Error (10822): HDL error at codec_ch_coding_CHA_src.vhd(173): couldn't implement registers for assignments on this clock edge

Error (10028): Can't resolve multiple constant drivers for net "TMP_MINISLOTACTPNT_SET" at codec_ch_coding_CHA_src.vhd(220)

Error (10029): Constant driver at codec_ch_coding_CHA_src.vhd(65)

Error (12153): Can't elaborate top-level user hierarchy

Error: Quartus II 64-Bit Analysis & Synthesis was unsuccessful. 9 errors, 42 warnings

Error: Peak virtual memory: 1156 megabytes

Error: Processing ended: Thu Sep 10 10:21:41 2015

Error: Elapsed time: 00:00:09

Error: Total CPU time (on all processors): 00:00:20

Error (293001): Quartus II Full Compilation was unsuccessful. 11 errors, 42 warnings

Thanks in advance!