File: EXP.TXT               Date: 12/18/95

The following is a list of the files available for downloading. They include
BASIC and assembly language examples. Also included are the PLD program files.


File Name        Size    Date
    Description
------------    -----  --------

ADC_16.A51       5378  10/07/92
    The attached program sets up a high speed loop to convert an analog
    channel using the ADC-12 Expansion Module. The channel is converted 16
    times, and an average is calculated from the results.


ADC_GAL.PLD      1879  02/01/93
    This file is the source file for the GAL16V8 Programmable Logic Device
    (PLD) used in the ADC-12 Expansion Module. This file can be modified to
    alter the write protect area, change the device memory map, etc.


ADC_PAL.PLD      1931  02/01/93
    This file is the source file for the PALCE16V8Z Programmable Logic Device
    (PLD) used in the ADC-12 Expansion Module. This file can be modified to
    alter the write protect area, change the device memory map, etc.


ADC_PEEL.PLD     2047  02/01/93
    This file is the source file for the PEEL18CV8 Programmable Logic Device
    (PLD) used in the ADC-12 Expansion Module. This file can be modified to
    alter the write protect area, change the device memory map, etc.


IOEXPIO.BAS      2013  05/08/92
    The attached file is a BASIC program that can be used to interactively
    read from and write to the I/O-24 Expansion Module. It is similar to the
    program included on the Expansion Module disk, except that this program
    allows the appropriate ports to be read as inputs.


IOLCDKP1.A51    22404  12/01/95
    This LCD/Keypad driver is the same as the IOLCDKP@.A51 program, except
    that it uses Timer1 as the keypad scan interrupt instead of Timer0. This
    allows the BASIC program to use the software RTC, which uses Timer0 as the
    time base.


IOLCDKP@.A51    23555  05/21/93
    The attached file implements the PRINT@ Driver for directing BASIC output
    to an LCD connected to the I/O-24 Expansion Module. It also includes a
    timer interrupt for scanning a keypad. A sample BASIC program for
    character I/O is included in the file comments.


IOLCD_P@.A51    12494  01/15/93
    This programs implements a user driver for BASIC's PRINT@ statement,
    which, once initialized, allows characters to be directed to an LCD
    module. It provides for placing the cursor at the first or second line, as
    well as clearing the display. The source file includes a hex file that can
    be loaded at the top of ROMsim for use with any BASIC programs in RAM or
    ROMsim.


IO_GAL.PLD       1971  02/01/93
    This file is the source file for the GAL16V8 Programmable Logic Device
    (PLD) used in the I/O-24 Expansion Module. This file can be modified to
    alter the write protect area, change the device memory map, etc.


IO_PEEL.PLD      2060  02/01/93
    This file is the source file for the PEEL18CV8 Programmable Logic Device
    (PLD) used in the I/O-24 Expansion Module. This file can be modified to
    alter the write protect area, change the device memory map, etc.


KEY_SCAN.BAS     1592  07/13/92
    The Key_Scan.BAS program uses the I/O-24 Module to interface to a 4x4
    keypad. The program simply reads all rows and columns and displays the
    ASCII characters assigned to the keys that are pressed. Note that no
    debouncing is done in this software. For an interrupt driven version of
    the Key_Scan program (in assembly language) refer to the file
    LCD_KeyP.A51.


LCDALLIO.A51    23440  01/12/94
    The attached file is a modified version of the LCD/KeyPad/PRINT@ driver
    that can be used with the all I/O version of the I/O-24 Expansion Module
    (BEaR Part Number BE-40-002). The file is also included in the file
    IO24New.ZIP.


LCDKP1.A51      25321  12/18/95
    This LCD/Keypad driver is similar to the IOLCDKP1.A51 program, except
    that it uses a 4-bit interface to the LCD. It also has added commands to
    move the cursor around on a 4 line LCD.


LCD_KEYP.A51    27774  08/25/92
    The attached file installs a timer interrupt to update an LCD and scan a
    keypad connected to the I/O-24 Module. Also included is a BASIC program
    interface and complete instructions for using with a 2x16 LCD and 4x4
    keypad. The LCD and Keypad functions take place "in the background" and
    the main program can access the LCD and keypad information at any time.
    The drawback to this implementation is that you can not use BASIC's
    software timer (CLOCK1) when this interrupt is running. However, the timer
    interrupt includes a free running timer that can be used by BASIC.


MEM_GAL.PLD      2439  02/01/93
    This file is the source file for the GAL20V8 Programmable Logic Device
    (PLD) used in the Memory Expansion Module. This file can be modified to
    alter the write protect area, change the device memory map, etc.


NEWIOLCD.A51    14153  07/14/92
    The attached file is the source file for the updated LCD driver software
    for the I/O-24 Expansion Module. It is functionally equivalent to the LCD
    driver supplied with the I/O-24, but it is easier to follow and includes
    more application information and examples