/* History:59,1 */
This is file libpc.doc

Contents:

* modules present in libpc.a




Features:

All libpc.a features are prototyped in the include file <pc.h>.

I/O instructions:

libpc.a includes the full range of PC I/O instructions:
  inportb - byte
  inportw - word
  inportl - long
  inportsb - string versions (rep insb)
  inportsw
  inportsl
  outportb
  outportw
  outportl
  outportsb
  outportsw
  outportsl

kbhit() returns 1 if a key has been hit. (except CTRL-C, which go32 traps)

getkey() gets one key from BIOS int 16h function 0.

sound(f) sets the internal sound generator to frequency f (in Hz).
  Setting the sound to zero shuts it off.

Screen module:

ScreenPrimary[] is an array corresponding to the primary display.  Thus,
  "ScreenPrimary[0] = 'X' | 0x0600;" puts a brown 'X' at the upper left
  corner of the current screen.
ScreenSecondary[] is the other screen (mono if the current is color, or
  visa versa).  If only one screen is available, they both map to
  the same screen.

Note that go32 remaps the screen memory so that the "primary" screen
always looks like a color screen, and the secondary screen looks like mono.

ScreenRows() returns the number of rows on the screen.
ScreenCols() returns the number of columns.

ScreenPutChar() puts a character/attribute pair at the specified location
on the screen.

ScreenSetCursor() moves the cursor.

ScreenClear() quickly clears the screen, without moving the cursor.