
order of compiling the files is as follows:

-------------------------------------------------------------------------------
################## files of processor ##################
and.vhd
addsub.vhd
shift.vhd
ALU.vhd
desdecoder.vhd
instrdec.vhd
reg1.vhd
regbank1.vhd
srcdec.vhd
prgcounter.vhd
processor.vhd                   
--------------------------------------------------------------------------------
################## models of memory for testing ##############
datamemory.vhd
programmemory1.vhd
--------------------------------------------------------------------------------
################## test bench ###############
prowithmem_test.vhd
--------------------------------------------------------------------------------

in order to run the test bench prowithmem_test.vhd the files
input.txt and
input2.txt 
should be present in the working directory
