For the EpsonX driver, both the assembly and C version of Transfer() are
supplied. In the Makefile the (faster) assembly version is used to
generate the driver.  The EpsonX driver can be generated with the
included Makefile.

     Makefile            init.asm         transfer.asm 
     macros.i            data.c           transfer.c 
     printertag.asm      dospecial.c      density.c 
     rev.i               render.c