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Int 7F/AX=ABCDh/BX=0000h - IBM 8516 Touch Screen Device Driver - GET API ENTRY -
AX = ABCDh
BX = 0000h
Return: AX = total number of functions available
ES:BX - entry point array (see #03967)
SeeAlso: AX=0104h,AX=0105h
(Table 03967)
Values for 8516 Touch Screen function number:
00h check initialization and reset (see #03968)
14h set user-defined subroutine (see #03969)
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<h3><font color=#C00040>IBM 8516 Touch Screen Device Driver - GET API ENTRY</font></h3>
<PRE>
AX = ABCDh
BX = 0000h<br>
<p><b>Return:</b><br>AX = total number of functions available
ES:BX -> entry point array <a href="rb-8106.htm#Table3967" tppabs="http://www.ctyme.com/intr/rb-8106.htm#Table3967">(see #03967)</a>
</PRE>
<p><b>See Also:</b>
<a href="rb-8002.htm" tppabs="http://www.ctyme.com/intr/rb-8002.htm">AX=0104h</a> - <a href="rb-8003.htm" tppabs="http://www.ctyme.com/intr/rb-8003.htm">AX=0105h</a>
<PRE>
<p>
<a name=table3967></a>
(Table 03967)
Values for 8516 Touch Screen function number:
00h check initialization and reset <a href="rb-8106.htm#Table3968" tppabs="http://www.ctyme.com/intr/rb-8106.htm#Table3968">(see #03968)</a>
14h set user-defined subroutine <a href="rb-8106.htm#Table3969" tppabs="http://www.ctyme.com/intr/rb-8106.htm#Table3969">(see #03969)</a>
</PRE>
<p><b>Notes:</b>
Each driver function takes two stack parameters using Pascal calling
<PRE>
<p><b>conventions:</b><br>Address of parameter block and address of results buffer.
All pointers are FAR pointers.
On return, AX contains the status of the call:
AX = 0000h successful
0001h invalid input
0002h interface error
0003h unable to perform function
<p>
Format of 8516 Touch Screen Function 00h parameter block:
<a name=table3968></a>
Offset Size Description (Table 03968)
00h WORD 0000h (function number)
</PRE>
<p><b>Note:</b>
This function should be called before any other device driver functions
<PRE>
<p>
Format of 8516 Touch Screen Function 00h results buffer:
<a name=table3969></a>
Offset Size Description (Table 03969)
00h WORD touch screen status
0000h unavailable
0001h uncalibrated
FFFFh available
02h WORD aux mouse status (0000h not present, FFFFh present)
</PRE>
<p><b>Notes:</b>
The following driver parameters will have been reset to zero:
touchdown counter, liftoff counter, position at last touch, position
at last lift, int call mask, select on count, select off count,
pos select on count, pos select off count..
The following driver parameters will have been reset as listed:
<PRE>
<p><b>mouse emulation mode:</b><br>Left on
<p><b>thresholds:</b><br>46 on screen, 96 push harder, 80 push release
<p><b>x, y hysteresis:</b><br>400
<p><b>data repeat rate:</b><br>40/sec
<p><b>select mechanism:</b><br>Push-harder - first-touch
<p><b>coordinate origin:</b><br>Upper left corner
<p><b>filter frequency:</b><br>Medium
<p><b>data block mask:</b><br>All enabled
<p><b>click lock:</b><br>On
</PRE>
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