xa-2.3.10 6502 Cross assembler 
       1. Changes in src
       czerny% diff xa-2.3.10/Makefile x/xa-2.3.10/Makefile
       3,8c3,8
       < #CC = gcc
       < #LD = gcc
       < ## for testing. not to be used; build failures in misc/.
       < ##CFLAGS = -O2 -W -Wall -pedantic -ansi
       < #CFLAGS = -O2
       < #LDFLAGS = -lc
       > CC = gcc
       > LD = gcc
       > # for testing. not to be used; build failures in misc/.
       > #CFLAGS = -O2 -W -Wall -pedantic -ansi
       > CFLAGS = -O2
       > LDFLAGS = -lc
       16,18c16,18
       < CC = cc
       < CFLAGS = -D_MSC_VER
       < LD = ld
       > #CC = cc
       > #CFLAGS =
       > #LD = ld
       
       2. to Compile
       ape/psh
       make
       
       similar approach can be done on dxa-0.1.4
        ------
       
       i wanted to do fft analysis using my plan 9 machine remotely. so wr
       collection of scripts and fortran code. signal below a sample of jt
       
       actual fft is done by fftpack. the display is inspired by the WOW! 
       
       czerny% ./slide /tmp/0dbm 2500 800
       0         1         2         3         4         5         6      
       +123456789+123456789+123456789+123456789+123456789+123456789+123456
                                                                          
                                                                          
                                                                          
                                                                          
                             .1                                           
                              3                                           
                               2                                          
                               10                                         
                                4                                         
                   .         .2 0                                         
                              4                                           
                              3                                           
                             .2    .0                                     
                                   13                                     
                               22  ..                                     
                               22                                         
                                3                                         
                             .0 1                                         
                              4                                           
                              4                                           
                              4                                           
                              5                                           
                              3                                           
                              3                                           
                              5                                           
                              3                                           
                              3                                           
                             .0   01                                      
                                  12                                      
                   .          4                                           
                             .2  0                                        
                                 3                                        
                             .2  .                                        
                              4                                           
                                   3                                      
                   .              01                                      
                                  4                                       
                                4 .                                       
                              . 3                                         
                              4                                           
                             .20                                          
                              .4                                          
                              4                                           
                              3                                           
                              5                                           
                             .0  2                                        
                                 4                                        
                                 4                                        
                             .0  2                                        
                              4                                           
                             .0   2                                       
                                  3                                       
                                   11                                     
                                 1 11                                     
                                 1                                        
                              3  .                                        
                              5                                           
                              3                                           
                              4                                           
                              4                                           
                                  2                                       
                   .          .   3                                       
                              4                                           
                             .1                                           
                              4