  

               HOW TO USE THE BB2732 EPROM PROGRAMMER            


This instruction set is intended to demonstrate the function and         
capability of the 2732 eprom programmer (bb2732).  The functions                        
in the following menu will be discussed individually below.

            P PROGRAM PROM     
            V VERIFY PROM
            E TEST PROM ERASED
            R READ HEX FILE INTO MEMORY
            T TRANSFER TO MEMORY
            M MOVE TO MEMORY
            C CHANGE MEMORY
            I INSPECT PROM
            D DISPLAY MEMORY
            F FILL MEMORY
            Q QUIT

P PROGRAM PROM- This command is used to program the information
            in the buffer into the prom. 
V VERIFY PROM- Compares the contents of the prom with a specified
            location in memory.
E TEST PROM ERASED- looks for all locations in the prom to be FF.

R READ HEX FILE INTO MEMORY- Allows a hex file to be loaded into 
            a specified location in memory-such as the buffer-so
            it can be programmed into the prom.
T TRANSFER TO MEMORY- Transfers the contents of the prom to specified
            location in memory.
M MOVE MEMORY- Allows you to move information from one memory 
            location to another.
C CHANGE MEMORY- Allows you to change the contents of a specified
            location in memory.
I INSPECT PROM- Allows you to look at the contents of the prom.

D DISPLAY MEMORY- Displays the contents of a specified location
            in memory.
F FILL MEMORY- Allows you to fill a specified block in memory with
            new data. (This is handy for filling memory with FF
            before programming.)
Q QUIT- Returns you to CPM.

                     INSTRUCTIONS FOR USE

     First you must have the proper programming voltage supplied 
to the programming socket(U80). For the 2732A this is 21.5 VDC.
Some others require 24 VDC.  When using the prom bank in the BBII,         
the proms take over locations in the lower half of memory. 
             
            PROM SOCKET               MEMORY LOCATION
               U85                       0000-0FFF
               U84                       1000-1FFF
               U83                       2000-2FFF
               U82                       3000-3FFF
               U81                       4000-4FFF
               U80                       5000-5FFF
               U52                       6000-6FFF
               U51                       7000-7FFF
               U50                       8000-8FFF
             U72-U79                     9000-FFFF

U80 is used to program the proms. U50-52 are the crt control chips.
Location 9000 through A000 is the buffer space.  CPM is relocated
to the space starting at D000.
     If you want to copy a prom, put the prom in the programming 
socket, use the  T command to transfer to memory the contents of 
the prom. Put a new erased prom in the socket, use the E command
to test for erased prom, then use the P command to program the prom.
This should take about 20 seconds. when this is complete, use the
V command to verify that the programming was successful.
     If you are copying information from the memory to the prom,
use the R or M command to put the data in the buffer area.  Then 
program the prom as before.  On the commands requiring a memory
location, most have a default location. 

                    ADDITIONAL NOTES

If you need a 2716, you can use a 2732 by programming only the
top half. It will then look like a 2716.

Use the fill memory command to fill the buffer with FF, that way
if you want to put another program on the prom you can do it 
without changing the first program.