This document describes some of the function calls that will be
supported by the DH OS.  Many of these functions were discussed on the
Shell-Developer's and Asm85 lists, but some i added myslef, and some I
changed the name and/or operation of them.  Each function is given in
this document as a short description of what the function does followed
by a set of parentheses, in the style of C functions.  Note that 
although no parameters are listed, they do exist.  Following each
function is a longer description of the function's operation and usage.

This document describes functions that will be coded directly 
into the OS Kernal and System Drivers.  They are catagorized by System/
SubSystem/Driver they are in.  Also included are many ROM calls that
will be supported by functions.  Also, some groups of functions that
are good, but not necessary to most games/applications will be 
implemented in Auto-loading DLLs.  The groups of functions that will be
in some of these are listed also.  But remember, the list of libraries
is NOT COMPLETE.  Neither are some of the System Driver groups (e.g. 
the PIO, and the MAth sections.)

If you think of a function that should be added to the list, please 
either email them directly to me, or send them to the asm85/shell-
developers lists with DH85:Functions, or something similar, in the 
Subject line.

And now, let the festivities... I mean the functions :)... begin!!!

Physical I/O Functions:
=======================
These include Drawing, writing text, getting strings/chars/keys, lcd 
control, etc.
A lot of Usgard/ZShell ROM calls and Usgard extensions will be used, 
along with a lot more.

Some LCD Control: (pretty self explainatory)

LCD_ON/OFF()
CONTRAST_ABS_CHNG()
CONTRAST_ABS_GET()
CONTRAST_INC()
CONTRAST_DEC()

KEY interpretation routines:

KEY_NUMBER()
KEY_UCASE()
KEY_LCASE()

Graphics Support:

*FileView Extensions LIB
*Sprite Extensions LIB
*Movie Extensions LIB
*Basic Line Oriented Draw Extensions LIB

OS Kernal Functions:
====================
ExitDone()           	exits a program, does not remain resident
ReturnfromLibFunc()	exits a library function
ExitToTIOS()		exits program and forces Shell to exit too
GetFreeRAM()		self explainatory, returns value
GetUsedRAM()
GetFreeDiskSpace()
GetUSedDiskSpace()

TSR Subsystem Functions:

ExitRemainResident()	exits program, remains resident
AddToINTList()		makes the program executed with the interupts
RemoveFromINTList()

Math SubSystem Functions:

All (or most) of the FP support from the ROM
might be implemented in a small LIB for ROM patching
32bit math routines
Conversion routines
comparisons
*Trigonometric Functions Extensions LIB

Communications I/O Functions:
=============================
SendDataStreamToE2()
RecieveDataStreamFromE2()
OutParallel6()       	out the module port, all 6 bits
InParallel6()		in
SetPinState()		set a specific pin high or low
GetPinState()
MapModulePort()		Set what each pin controls.  if using all 
			TI-OS jacks, each useing two pins, you can
			have three regions.  you also tell what each
			region is (I2C/MBus, TI-P, IR-P)
			*see my upcoming doc on a cool hetwork hub for
			*the ultimate in ModulePort extensions
SendDataStreamI2C0()	sends the data stream to a different mapped I2c
SendDataStreamI2C1()	region of the module port
SendDataStreamI2C2()
GetDataStreamI2C0()	***note: if only one is mapped, the higher ones
GetDataStreamI2C1()	***dont send to anywher, they will return an
GetDataStreamI2C2()	***error.
SendDataStreamTIP0()	sends the data stream to a different mapped TI
SendDataStreamTIP1()	OS protocoled region of the module port
SendDataStreamTIP2()
GetDataStreamTIP0()
GetDataStreamTIP1()
GetDataStreamTIP2()
*Mapped Data Stream IR-P operations extension LIB

File I/O functions:
===================
OpenFileFromE2()
SaveFileToE2()
DeleteE2File()
CreateE2File()
DoesFileExistE2()
SendFileToI2CBus0()	sends a file to the bus
SendFileToI2CBus1()
SendFileToI2CBus2()
ReqFileToI2CBus0()        requests a file from the bus
ReqFileToI2CBus1()
ReqFileToI2CBus2()
SendFileToTIP0()
SendFileToTIP1()
SendFileToTIP2()
GetFileToTIP0()        
GetFileToTIP1()
GetFileToTIP2()
*File Compression Extension LIB

RAM I/O Functions:
==================
AllocaeArena()
DeallocateArena()
ForceArenaManagement()
CopyArena()
RelocateArena()
CallArena()
CallLibFunction()

TI-OS Var Support:

AccessTIOSVar()
DeleteTIOSVar()
CreateTIOSVar()

I know some of these functions aren't explained very well, but i didnt
have much time.
I will explain more in further docs
Look for more docs real soon. im in a doc writing spree!!
(i have off from work!)
jonathan