- Upon creation, initialize the PSP version field
to os_setver_minor / os_setver_major.
- When calling Function 30h, return the contents
of the current PSP's version field to the caller.
Some ancient NE programs set exMinAlloc to 0xffff to signify
that they should not be run as normal MZ programs at all:
00000000 4d 5a 40 00 01 00 00 00 04 00 ff ff ff ff 00 00
00000010 00 00 00 00 00 00 00 00 40 00 00 00 00 00 00 00
00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00000030 00 00 00 00 00 00 00 00 00 00 00 00 40 00 00 00
00000040 4e 45 04 00 9b 00 07 00 00 00 00 00 06 40 02 00
...
The kernel should reject these programs, rather than try to
run them (and crash the system).
