OS/2 2.x Virtual Device Drivers (VDD) - Course OS2DD201
  Enabling hardware support for multiple DOS applications

Objective
======================
    To expedite Independent Hardware Vendors (IHV) support of OS/2 2.x
by writing Virtual Device Drivers (VDD) to support PC hardware; This
will allow the hardware to be used by Multiple Virtual DOS Machines
(MVDMs).
    This class will identify the protocol on how to communicate with
the kernel and Dos session manager using Virtual Device Helper Services
(VDH); Installation and debug techniques will also be covered.

Target audience
======================
IBM or IHV programmers who code device drivers for...
   a.  PC hardware
   b.  I/O interfaces (i.e. Serial, parallel, etc)
   b.  Bus type: ISA, EISA, VLB, or MCA.

Attendee prerequisites
======================
   a. Programming expertise: C (MASM useful)
   b. Knowledge of OS/2 1.x Physical DD (attend OS2DD101 or equivalent)
   c. Other device drivers for IHV hardware
         DOS, ROM BIOS code, utilities
   d. Intimate knowledge of IHV hardware & programming protocol
   e. Purchased development software (OS/2 2.1, DDK, MSC 6.0, MASM 5.1)

Course length: 5 days

Outline
======================
 OS/2 Structure
   Device Driver types
     PM Device Drivers
 Block diagram (PM Driver modules)
   Logic
   Data flow
 New elements in 2.0 Screen Device drivers
   Palette management
   Seamless windows
   VDD suppport
 DAK contents
   Organization
      Build tree
   Tools
 Virtual Device Drivers
   MVDM - Definition/overview
   Support needs
         Virtual Device Driver (VDD)
         Processor support
         Event trapping
          Interrupt, Port
         Memory management
   VDM initialization
   Instance, global
   Synchronization with system events
Debug procedures
Laboratory