Roger.  You are welcome to post PC370.ZIP on usenet.  I also
  uploaded it to CompuServer IBMPRO forum assembly language
  directory.  It also in is in the PC-SIG library under program
  ref. number 402.  Since this is the last shareware release
  of PC/370 and it is now over 3 years old, I am no longer in
  the business of distributing single copies on diskette and
  I am referring people who request it to CompuServe or PC-SIG.
  I am also returning unsolicited shareware registrations and
  suggesting that users donate the registration to their local
  college if they fell obligated to do something.  I am returning
  a registration check I received today from Ulster County
  Community College in New York.

Regarding the history , it goes like his:
  1.  The original version was developed for CP/M on 8 bit Z80
      chip for use by students in my class on 370 architecture
      any assembly language that I taught for several years at
      USF in the early 1980's.  Prior to PC/370 the students has
      (had) to wait 2 days to get simple assembly language program
      run on the USF mainframe system which was overloaded.
  2.  At one pint, I tried to market it via Lifeboat Associates
      (a CP/M software distributor) and even ran an add in the
      ComputerWorld rag with the caption "370 on a chip".  This
      was even before IBM announced the PC.
  3.  In June 1985 PC/370 rel 1.0 was released as shareware. It
      included a full screen editor, 370 cross assembler, linker,
      and 370 emulator which could run programs on any PC with
      MS-DOS 2.0+ and 256k.
  4.  In January 1988, PC/370 rel. 4.2 was released as shareware
      with 370 standard floating point instruction set support via
      80x87 co-processor, limited macro pre-processor written in
      PC/370 assembler, resident run time emulator option, plus
      support for calling PC/370 subroutines from Micro Focus COBOL
      using their early binary BIN API interface.  The API was
      developed in cooperation with Micro Focus and they distributed
      PC/370 rel. 4.2 as is to their customers that wanted in back
      in that time frame.  Around the same time, a college text on
      IBM 370 assembler was published by Prentice Hall (author was
      Charles Kacmar) which included PC/370 rel. 2.0 as the basis
      for all of the student homework and example assembler problems.
  5.  During 1988, I developed an entirely new MVS mainframe compatable
      macro processor.  And in early 1989, I successfully executed
      contracts with Pansophic and Micro Focus for use of PC/370
      and follow-on software in their commercial products.  Pansophic
      uses it in their PC/TELON developer product, and Micro Focus
      markets the entire product under the name MF/370.  The commercial
      version now runs not only on MS-DOS but also OS/2.  Note that
      under the contracts I have retained the right to distribute the
      4.2 shareware version for use by students, colleges, etc.  Micro
      Focus has also developed a special discount program on the new
      product for universities.  Also note that since this is a hobby
      and I work for Florida Power, the contracts free use for FPC and
      in fact FPC has had a production online application using PC/370
      running for over 4 years.