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- Date: 5/30/81
- From: ANDY BENDER
- To: ALL
- Re: CHEAP FORTRAN AND MACRO 80 PROGRAMS
-
- If you want a copy of the Microsoft F80 and M80 programs
- as well as their support software and you want to get them
- with free updates for a year and be a legal user read on.
- While not free, Heathkit sells these programs, doctored up
- so they only run on Heath systems, at a discount. The
- discount is quite steep and the free updates are attractive.
- You will need to know about DDT and SAVE to fix them so you
- can use them:
-
- FOR FORTRAN: >DDT F80.COM
- then alter the LXI d,barf at 2C38 to jmp 2C90.
- Exit from DDT and do a SAVE 107 F80.COM
-
- FOR MACRO80: >DDT M80.COM
- then alter the LXI d,barf at 4392 to jmp 43EA.
- Exit from DDT and do a SAVE 75 M80.COM
-
- You now own legal copies of both programs suitable for use
- on your CP/M 1.4 or 2.2 system.
-
- This patch bypasses the vendor code check in the CP/M
- serial number and also bypasses some I/O twitching that
- must be important for Heath systems. The other system
- programs distibuted on the disk do not need patching
- these programs (LIB, L80 XREF etc) assume if you got to
- use them you must be ok.
-
- The same patch is probably possible in other Heath
- software such as BASIC Compiler or COBOL Compiler. I
- have not researched these programs however.
-
- My advice to fix other software would be to look at the
- area in which the vendor code check is being carried out
- and follow the same bypass as I did in M80.
-
- Lots of Luck - Happy Computing from us at NSI.