To install this package on CP/M, download the ZIP file and unpack it. It will create a folder with the same name as the package, containing the files shown.

Download PerfectWriter-1.03.zip containing all files below.

README.TXT
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PerfectWriter 1.03 for fZ80
Tom Jennings
10 Apr 2026

This is PerfectWriter, patched and configured for fZ80. It has been configured
for screen addressing, and patched for MP/M compatibility.  The patch
auto-detects CP/M version 2 up, and MP/M. The patched version won't run on CP/M
1.4.

CAVEAT

Due to PW's design, the necessary swap file, which contains configuration data,
must be present either in the local directory (that you run PW.COM in) or on
drive A: user 0. HOWEVER the latter works only if you are editing in user 0 (on
any drive letter). Generally speaking most CP/M users stick to the default user
0 because USER support isn't very good; but on MP/M, with it's improved USER
support, it's often you will want to edit files while logged into some other
non-0 user number. For this case, you'll need to PIP a copy of the PW.SWP from
user 0 A: to your working directory. This works just fine; but it's inelegant
and consumes 80K of disk space (which luckily isn't scarce). I'm still looking
into a better solution. If you have one I'd love to share it!


INSTALLATION

Both PW.COM and PW.SWP must be copied to user 0 drive A:. PW.COM should have
SYS, RO and F1 attributes. The included submit file INSTALL.SUB does it all.
(Requires GO.COM.)

CUSTOMIZATION WARNINGS

The PWCONFIG.COM program configures many aspects of PerfectWriter, but avoid or
use extreme care around "terminal type". The built-in "H19" type is simply
wrong and sets crazy escape sequences (known issue back in the 80's). And the
MP/M patch precludes using I/O Port features to talk to the screen and
keyboard. Otherwise other features of PWCONFIG should work fine.

FILES INCLUDED

PW.COM

This is the file to use and install. It has
the patches described in PWPATCH.ASM applied
and the screen is setup for H19 and fZ80.

UNPAT-PW.COM

This is the unpatched, original PW 1.03 except
configured properly for the H19 screen. If you
want to "reset" and apply new patches (see below)
this is the file to use.

PWPATCH.ASM

This is the source for the MP/M patches for
PerfectWriter. I assemble with MAC.COM; to use
ASM.COM simply comment out the TITLE line.

To apply the patch read the instructions in this
file.

e INSTALL.SUB
does i
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