8570/80 - 486DLC2 Upgrade
blc_util.exe Utility diskette (self-extracting diskette maker):

486DLC2 System Board Upgrade PN 71G2610 FRU 13H6701 

This IS the "Blue Lighning" all FRU and PNs match. 

   The Blue Lightning Processor replaces the 80386DX microprocessor on the system board and emulates the presence of the original 80386DX, so no special software is required. The Blue Lightning Processor Upgrade is fully compatible with operating systems that are capable of running on an 80486 microprocessor. (incl. OS/2 and DOS) 
   It also supports bus mastering adapters, if they are present in the system. 

Important Always run the DIAGNOSTIC TESTs with the Blue Lightning Processor Upgrade cache disabled. (BANK-1 SW-1 OFF = cache disable for testing purposes !) 

In some cases, with the Blue Lightning installed, the diagnostic tests might indicate an error. Try to replace the Upgrade board with the original 386DX. If the diags are OK the adapter is fully functional and will also work with the Blue Lightning Upgrade. 

This Processor update can be installed on one of the following computers.  8570, 8580 with 80386 Microprocessor. 

You must use 8570/80 Reference Diskette Version 1.10 or later. 

The 132-Pin PGA Socket Extender (only needed for 8580 mod. 111, 121, 311 or 321) 

Switch Bank 1 Default Switch settings
SW-1  SW-2  SW-3  SW-4
 ON   Off   Off   Off

Switch Bank 2 Default Switch settings
SW-1  SW-2  SW-3  SW-4  SW-5  SW-6
 ON   ON    ON    Off   ON    Off

Switch Bank 1 function 
SW #   Setting    Controls                    Remarks 
1   ON (D)   Cache on at start           Read at Power-ON.
    Off      Cache off at start
2   ON       Flush cache on INT 9
    Off (D)  Don't flush cache on INT 9
3   ON       Flush cache on INT 10
    Off (D)  Don't flush cache on INT 10
4   ON       Flush cache on INT 11
    Off (D)  Don't flush cache on INT 11

Switch Bank 2 function 
SW #   Setting    Controls                     Remarks 
1     ON (D)   Flush cache on INT 14
      Off      Don't flush cache on INT 14
2     ON (D)   Fast RAM count
      Off      Slow RAM count
      This switch caches ROM from adapters. This only affects the POST. If computer stops after RAM count completes, turn OFF and restart computer. The RAM count is slower, but performance after computer starts is not affected.
3    ON (D)   Cache all extended memory
     Off      No caching from 14MB to 16MB
         Set to OFF if memory-mapped devices use memory in 14-16Mb area.
4    Off (D) (Reserved)                    Don't change 
5    ON (D)  (Reserved)                    Don't change 
6    ON      Flush cache on INT 15
     Off (D) Do not flush cache on INT 15
        If you have a SCSI HD, switch must be ON.

Installing the Blue Lightning Upgrade 
   1. Power-OFF the computer 
   2. Remove the Power-Cable 
   3. Open/lift the Machine cover 
   4. Remove HD(s) / Adapters 
   5. Locate the Processor on the System Board (Pin 1) 
   6. Remove the Processor (80386) 
   7. If machine is 8580 -111,121,311 or 321 use 132-Pin  PGA socket Extender (Pin1 to Pin1) 
   8. Install the Blue Lightning into Processor/PGA socket  (Pin-1 to Pin-1) 
   9. If a SCSI Adapter is installed, Switch Bank 2 / SW-6 must be ON. 
  10. Reinstall all previously removed Cable/Adapter 
  11. Reconnect the Power cord 
  12. Power-ON the system 

Utility Diskette 
   To control the cache speed under OS/2 or DOS (but not a DOS session under OS/2) without restarting the computer, insert the Utility Diskette in drive A and at the prompt: 
   1. Type A: to change to the root directory of drive A. 
   2. Type slow to disable the Blue Lightning cache 
       --- or --- 
      Type fast to enable the Blue Lightning cache. 

To permanently affect caching options, use SW-1 on bank 1. 

Running Diagnostics on Blue Lightning
   Before running diagnostic tests, check that the processor upgrade card is fully seated in the system board and that the 80486 processor is  fully seated in the upgrade card. 

   1.Power-off the computer. 
   2.Insert the 70/80 Reference Diskette in drive A. 
   3.Power-on the computer. 
   4.Follow the instructions on the screen to test the processor upgrade. If the tests cannot find a problem, replace the processor upgrade with an 80386 processor from a new system board (or the original 80386 cpu, if available). If the failure does not occur again, replace the processor upgrade with a new one. If the failure does occur again, replace the system board, and reinstall the original processor upgrade. If the failure occurs again after replacing the system board, replace the processor upgrade also. 

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