

                           ISP Daisy Chain Download,
                           Version 1.2 Release Notes


These release notes provide additional information for the Lattice 
ISP Daisy Chain Download software, version 1.2. They are intended 
as a supplement to the ISP Daisy Chain Download Reference Manual. 
The following topics are discussed:

  * Installation Procedures
  * Turbo Download
  * User Electronic Signature Editor (Windows and DOS Applications)


Installation Procedures


Windows Version

The ISP Daisy Chain Download software setup program requires 
Microsoft Windows 3.1 (running in 386 enhanced mode) to be 
installed on the system. This software does not support 
Windows NT or Windows 95. The following procedure automatically
installs the ISP Daisy Chain Download (IDCD) software, 
version 1.2, under the Microsoft Windows environment.

To set up the ISP Daisy Chain Download software:

Insert the auto-install diskette into the floppy drive and enter 
the following command at the DOS prompt: (assuming your floppy 
drive is drive b.)

win b:setup

The install program checks for any existing Lattice pDS or 
pDS+ software. At this point, depending on which Lattice Fitter 
you are using, set the correct installation path corresponding
to where you loaded the Lattice Fitter executables. The following 
subsections outline three possibilities: 

   *  pDS Installation
   *  pDS+ Installation
   *  Stand-alone Installation


pDS Installation

Install the ISP Daisy Chain Download version 1.2 in the same 
directory as the pDS version 2.70 or higher software. 
For example, during the installation procedure, use the following 
path at the prompt:

     C:\pds_install_path\ 

1. The program responds with a series of screens to guide you 
   through the installation process. Continue the installation 
   process by following the instructions on the screen. 

2. The install program automatically includes the IDCD icon in 
   the current Lattice group in the Windows Program Manager.


pDS+ Installation

Install the ISP Daisy Chain Download version 1.2 in the 
directory which contains the pDS+ Fitter version 2.1 or higher 
executables for all Lattice Windows-based applications. 
For example, during the installation procedure, use the following 
path at the prompt:

     C:\pdsplus_install_path\bin 

1. The program responds with a series of screens to guide you 
   through the installation process. Continue the installation 
   process by following the instructions on the screen. 

2. The install program automatically creates a Lattice group in 
   the Windows Program Manager which contains the IDCD icon.


Stand-alone Installation

At the installation prompt:

1. Specify any location you choose for the IDCD software.

2. The install program automatically creates a Lattice group in 
   the Windows Program Manager which contains the IDCD icon.


DOS Version

There is no installation required for the DOS version of the ISP 
Daisy Chain Download version 1.2 software. Launch the program 
at the DOS prompt by typing the following command:

     C:\install_path\ddownld


Turbo Download

Turbo Download performs just like you'd expect--fast! We 
changed the way the ISP bit stream is read from the JEDEC files 
and sent to the daisy chain. Now, it is much faster. You must 
have a daisy-chained configuration to use turbo download. 
The more devices you have chained together, the more time you save. 
You can also retain your ISP bit stream so you can use it repeatedly--
provided you are downloading exactly the same configuration onto 
the devices.

 
Windows Application

The following procedures assume that you have read and 
understood the ISP Daisy Chain Download Reference Manual 
to create a configuration setup. The turbo downloading process 
requires a complete and accurate configuration setup file, just 
like a regular downloading process. 

To run the turbo download feature:

1. Select Configuration > Turbo Download > Build from the ISP 
   Daisy Chain Download menu.

   This process builds the ISP bit stream and stores it in a 
   temporary buffer. You must perform the bit stream build to 
   run turbo downloading. Check the Messages window for important 
   information and a finished message.
 
2. Select Configuration > Turbo Download > Run Turbo Download 
   from the ISP Daisy Chain Download menu. The Message 
   window reports that the software is checking your 
   configuration setup for each device.


DOS Application

To perform turbo downloading of your devices:

1. Select 7 or T from the main menu. The Turbo Download menu 
   appears. 

2. The number 1 option, Build ispSTREAMTM is highlighted. 
   You must perform this step to continue. Select Return (Enter). 

   The .DLD File With Operations--PV, NOP, V: box appears. 
   The following are the only turbo download supported options: 

   *  program and verify
   *  no operation
   *  verify

3. Type in the name of the .dld file you wish to download. 
   If you do not know the name of the .dld file, press Return 
   (Enter) and a list box will appear with all the available 
   .dld files from your current working directory. 

4. Select a file name from the list box. Use the arrow keys 
   to move the selection up or down. It is highlighted. 
   Press Return (Enter). The IDCD software begins to pack the 
   JEDEC files; you should see a successful message.

5. Select 2 or P from the menu to program and verify the JEDEC 
   files and the .dld files onto the devices in the chain. 
   The following message appears:

       Begin Turbo Programming and Verification...... 

   Then a PASS | FAIL status appears telling you the turbo download 
   process is complete.


To verify the daisy chain against the ispSTREAM:

1. Select 1 or B from the Turbo Daisy Chain Options menu 
   to build the ispSTREAM.

2. Select 3 or V from the Turbo Daisy Chain Options menu 
   to perform a verification. This step does not program 
   (download) the devices, even though the PV operation was 
   used in the configuration file on which the ispSTREAM 
   is built. 


User Electronic Signature Editor

We added a new feature allowing the designer to edit or 
read the User Electronic Signature (UES) data in the JEDEC 
file. Set a signature using the hexadecimal or ASCII formats. 
Please note that the Windows Application version does not support 
a UES in ASCII format; that capability is only supported by 
the DOS Application version of the ISP Daisy Chain Download software.


Windows Application

We added two new icons to the tool bar. Both icons are 
illustrated and discussed below.


Editing a UES

To edit a signature:

1. Select Command > Edit File UES or the write UES icon from 
   the ISP Daisy Chain Download menu to edit a UES. If the 
   UES window exists, this function brings the UES window to 
   the foreground. Otherwise, The Select The .JED File for UES Read 
   dialog box appears. 

2. Select a .jed file. Choose the directory and file type. 
   Click OK. The UES window appears.

3. Type in the signature using only hexadecimal characters 
   (0-9 and A-F). The Digit edit position field helps you 
   while typing in the signature. Press Update. The UES dialog 
   box appears telling you the signature was saved into the 
   .jed file. Remember, the signature is only imbedded on the 
   device after you perform a download.

   If you select the Close button before you press Update, 
   the window closes and the new signature is not saved to 
   the .jed file. 


Scanning the Board for the UES 

To read the signature from the chip:

1. Select Command > Display Board UES or the UES chip icon 
   from the ISP Daisy Chain Download menu. This function 
   performs a scan of the board. The new Display Board UES 
   window appears. You cannot edit the signatures on the 
   devices with this window. 

   This command only allows you to view the signature that 
   you already downloaded onto the devices. If you have not 
   downloaded a personal signature onto your devices, the default 
   numbers will appear in the signature field. 

   The Close button terminates the Display Board UES window 
   and the function. 

2. Check the Messages window to confirm the scan function of 
   the devices was successful.


DOS Application

To access the UES function:

1. Select 5 or U from the main menu. The UES Editor Option 
   dialog box appears.

   The UES window allows you to perform the following 
   six options:

     * Edit the JEDEC file signature in hex format
     * Edit the JEDEC file signature in ASCII format
     * View (only) the JEDEC file signature in hex format
     * View (only) the JEDEC file signature in ASCII format
     * Read the signature from the device(s) in hex format
     * Read the signature from the device(s) in ASCII format
     * Exit UES
 
2. Select an option from the menu by typing the highlighted 
   character or its number.

3. When you are finished, press Esc to return to the main menu. 


To edit the default UES in the JEDEC file in hex format:

1. Select 1 or E. 

2. Type in the name of the JEDEC file to edit. If you want to 
   edit a .jed file from another drive or directory besides 
   your current working directory, type the full path in 
   the box. If you cannot recall the name of your file, press 
   Return and the .jed files available in your default (working) 
   directory appear. Use the arrow keys to highlight a .jed file 
   from the list box on the right. Press Return and appears. 

3. Edit the signature using only allowable hex characters. 
   Press Return to change the signature and write it into 
   the JEDEC file. Press Esc to cancel the process. The 
   signature does not change.

   The following message appears:

     UES is written into JEDEC File path\jedec_file_name.jed

4. Press 7, Q, or Esc to access the main menu.

   The View and Read functions do not allow you to change the 
   signature. Use Edit or Write to change the signature. 


To edit the default UES in the JEDEC file in ASCII format:

1. Select 2 or W. 

2. Type in the name of the JEDEC file to edit. If you want to 
   edit a .jed file from another drive or directory besides 
   your current working directory, type the full path in 
   the box. If you cannot recall the name of your file, press 
   Return and the .jed files available in your default 
   (working) directory appear. Use the arrow keys to highlight 
   a .jed file from the list box on the right. Press Return.
 
3. Edit the signature using only allowable ASCII characters. 
   Press Return to change the signature and write it into 
   the JEDEC file. Press Esc to cancel the process. The 
   signature does not change.


To display the UES:

1. Select 3 or D. The JEDEC File to View UES message appears 
   on the screen. 

2. Type the JEDEC file name. Press Return. The signature 
   for that JEDEC file appears on the screen. This function 
   allows you to view the signature already embedded (or the 
   default) in the JEDEC file, not what is physically 
   programmed onto the chip.


To show the UES:

1. Select 4 or S. The JEDEC File to View UES message appears 
   on the screen. 

2. Type the JEDEC file name. Press Return. The signature 
   for that JEDEC file appears on the screen. This function 
   allows you to view the signature already embedded (or the 
   default) in the JEDEC file, not what is physically 
   programmed onto the chip.


To read the UES in hex format from the devices:

1. Select 5 or R. The  Which Chip  box appears.

2. Select a chip number from the daisy chain, if you 
   are using one. 

3. The UES appears on the screen. This signature is physically 
   loaded onto the device(s). To change the signature, 
   use the Edit function, 1 and then reprogram the device.


To get the UES in ASCII format from the devices:

1. Select 6 or G. The  Which Chip  box appears.

2. Select a chip number from the daisy chain, if you 
   are using one. 

3. The UES appears on the screen. This signature is physically 
   loaded onto the device(s). To change the signature, 
   use the Edit function, 2 and then reprogram the device.
