ASCIISYS.COM is a program which will modify the 12/6/85 CPM+.SYS to
accomodate standard ascii printers and print buffers.

   ***THIS PROGRAM WILL NOT WORK WITH OTHER CPM+.SYS RELEASES***

   The C128 CP/M operating system contains two features which cause
problems in many standard ascii printers.  ASCIISYS patches three bytes
in the CPM+.SYS file associated with printer operations.

   To use the program, put a copy (not your original!) of the 12/6/86
CPM+.SYS, CCP.COM, and ASCIISYS.COM on a disk.	Type "ASCIISYS X" at
the CP/M prompt.  ASCIISYS will alter the CPM+.SYS file on the disk.
After ASCIISYS is done, if all goes well, you'll get a message saying
that you can reboot with the new CPM+.SYS; a standard ascii printer
should work correctly now.  If there is a problem of some sort and
ASCIISYS does not find the bytes which it expects, it will put an error
message on the screen and terminate operation.	In this case,the
CPM+.SYS file on the disk will be unreliable and should not be used to
boot up the 128.

   If you have any questions or problems, please feel free to drop me a
letter:

		  S. L. Grendel
		1426 Andrew Drive
	    Warson Woods, Mo.	63122

   Drop me a letter even if you don't have a problem or question about
ASCIISYS.  It's always nice to hear from other C128-CP/M user's.

   This page is a technical discussion of what ASCIISYS does.  You
don't need to read it to use ASCIISYS.

   As mentioned before, the standard CPM+.SYS does two things to
knacker a standard ascii printer or print buffer.  First, the system
sends all text to the LIST device in petascii form.  Although the
system does all it's work in standard ascii, the printer driver
converts text to petascii to accomodate standard CBM printers.	Second,
the system always opens a channel to the printer with a secondary
address 7.  Many (if not all) standard printers do not know what to do
with this secondary address and will go to lala land when the computer
sends them one.

   This program changes three bytes associated with printer operation:

Location     From    To    Remark
  272E	      E6     C9    Prevents ascii to petascii conversion
  605D	      A4     A0    Stops system's sending of secondary address
  605E	      0B     FF      "	    "	     "	  "	"	  "

The locations are with respect to 100; all values are hexadecimal.  In
addition, the heading which appears at the top of the screen when CP/M
boots up is altered to indicate that the modified system is in use.

   A good discussion of this whole ascii/pet ascii business can be
found on page 194 of the December, 1986 issue of "Computer Shopper"
magazine.  This program is dedicated to my Q-Link friends Bowdre and
York.

				      SLG