Date   : Mon, 13 Aug 1984 06:31:07-PDT (Mon)
From   : hplabs!hao!seismo!cmcl2!lanl-a!rgt@UCB-VAX.ARPA
Subject: Request for CP/M and MS-DOS in-depth books

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       I just received a DEC Rainbow 100+ computer.  It has both
CP/M 80/86 and MS-DOS.  I have been trying to use the CP/M assembler
for graphics applications, since the GSX-86 graphics package works
under CP/M.  I have been having trouble with the assembler skipping
instructions, and with CP/M not doing what the book says it should.

       Can anyone give me the names of some good books that explain
CP/M and MS-DOS?  I do not want the basic "This is a computer, this
is a power switch" type books.  I want books that explain CP/M for
the computer professional.  Specifically, I want to know the disk
formats for CP/M disks, how the directories are stored on disk,
how disk block allocation is done for CP/M, how to call CP/M from
assembly language programs, how to modify the operating system to
add my own special features, etc.  And the same type of information
for MS-DOS.

       I have been programming for over 14 years, and have over 2
years experience with the Intel 8086/88 and 80186/188 family of parts,
so I want books that have some depth.

       Thanks in advance.

                                               Richard Thomsen