GUI 3.00 UPGRADE PROCEDURE - 1.00
=================================

Disclaimer
==========
Zilog is not responsible for any damages resulting from
"Doing-It-Yourself" upgrades. 

Hardware Update Procedure
=========================
You must upgrade your BOOTROM to take advantage of all the new 
benefits of the Zilog's version 3.00 GUI.

CAUTION: The new BOOTROM does not work with the old GUI.


BURNING A BOOTROM
-----------------
If your upgrade kit doesn't come with a BOOTROM device or you
wish to upgrade another system, you should follow the instructions
below to burn one.  Otherwise, skip this section and go to
"INSTALLING A BOOTROM".

Tools needed:
  * 28-pin DIP 27C64A PROM (250ns or faster)
  * EPROM Programmer
  * BROM300.HEX file on the GUI 3.00 diskette

Program BROM300.HEX into 27C64A using Intel hex format per your 
EPROM programmer's instruction.  The checksum value from your
EPROM programmer should be 78EA.  Label the EPROM as "3.00".

NOTE: BROM300.HEX file specifies the complete contents for all
      locations in the Boot ROM, so it is not necessary to preset
      (or clear) the programmer's memory to $FF.


INSTALLING A BOOTROM:
---------------------
Tools needed:
  * Needle-Nose Pliers
  * #2 Phillips Head Screw Driver
  * IC Extractor (or small flat-blade screw driver)

ICEBOX
------
 1. Disconnect the emulator from power supply, PC, and target board.
 
 2. Remove top cover of the emulator by removing four Phillips-head 
    screws located on the bottom of the emulator.
 
 3. Remove the red RESET button.
 
 4. Carefully remove both PC boards from the plastic enclosure.
 
 5. Carefully unplug top PC board (the daughterboard) from the
    bottom motherboard, using needle-nose pliers or a flat-blade 
    screw driver.
    
    NOTE: PC boards are connected by two 64-pin connectors (P1 & P2).
    CAUTION: Be careful not to damage the traces on the PCB boards.
 
 6. Using the IC extractor or a small flat-blade screw driver, 
    carefully remove the BOOTROM located at U17.  
 
 7. Insert the new BOOTROM at U17 by carefully aligning the pins and
    pressing firmly.  Check to ensure that all pins are properly seated.
 
 8. Reinstall daughterboard onto motherboard, ensuring correct
    positioning of 64-pin connectors P1 and P2 pin 1.
 
 9. Before reinstalling the boards into the plastic enclosure, connect 
    the RS-232 and power to the motherboard, start the new GUI 3.00 to 
    see if the emulator boots properly.  (The GUI should first show the 
    blue Zilog screen and the LED A should blink during self-test and 
    stay on when successfully passing the self test).

10. Disconnect the ICEBOX from the power supply and PC after you have 
    verified that the modification was successful.

11. Install modified PC boards back into bottom plastic enclosure with 
    rear and front panels positioned into enclosure slots.

12. Install red reset button onto reset switch.

13. Install top plastic enclosure cover using the four screws.
    CAUTION: Do not over-tighten screws.

14. Connect power to the ICEBOX.  The LED A should blink during self test 
    and stay on when successfully passing the self test.


CCP/391 EVALUATION BOARD
------------------------
 1. Using the IC extractor (or a small flat-blade screw driver), carefully 
    remove the BOOTROM located at U12/U8.  

 2. Insert the new BOOTROM at U12/U8 by carefully aligning the pins and
    pressing firmly.  Check to ensure that all pins are properly seated.

 3. Connect the RS-232 and power to the evaluation board, start the new 
    GUI 3.00 to see if the emulator boots properly.
    (The GUI should show the blue Zilog screen and complete the self test).


NOTE: For other emulator/evaluation boards, look for a 28-pin EPROM that 
      is labeled as "1.3".  If you encounter any problem, please contact your
      local Zilog office or Zilog Distributor Field Applications Engineer 
      (FAE) for assistance.


Software Update Procedure
=========================
To properly install the GUI software, first start the Windows operating
system, then follow these steps:

 1. Insert the GUI diskette into a compatible disk drive.

      NOTE: If the GUI has been downloaded from the Zilog BBS to a
            download (temporary) directory, the user should use this
            path (Example: "c:\tmp") in place of "a:\" in step 3.
            After installation, the download directory contents should
            be saved in case re-installation is ever needed again.

 2. If the user has a prior version of the GUI, you should rename it's
    directory (Example: Z8ICE1.3 or DSPICE1.3) to save it until you are
    comfortable using GUI 3.00.

 3. Select the Run command from the File menu, located under the Windows
    Program Manager.

 4. Type in the following at the prompt (enter characters between quotes):
      "a:\setup"   (or "b:\setup" if the diskette is in drive B:)

A dialog box will now prompt the user for the destination directory into
which the software will be installed (decompressed).  The default is
C:\Z8ICE for Z8 GUI and C:\DSPICE for DSP GUI.

Follow the setup program prompts to install the files into the destination
directory, creating program icons in the Windows environment.

After installation has finished, you can move the icon(s) into any
program group of your choice.

The installation process must be followed to properly decompress the
files prior to use, i.e., the files cannot be simply copied to the
destination directory.  Thus the diskette is a transport medium and the
GUI cannot be executed on the diskette itself.  The installation process
does not modify the "win.ini", "autoexec.bat", or "config.sys" files.
