

MOTHERBOARD = IBM 5150 motherboard of type 64KB-256KB

Note: On the above motherboard, the /RAS pin of all RAM chips in a bank are connected.
Note: On the above motherboard, the /CAS pin of all RAM chips in a bank are connected.
Note: On the above motherboard, the /WE pin of all RAM chips in a bank are connected.



-------------------------------
/RAS
-------------------------------

The /RAS pin of any RAM chip in bank 0.


-------------------------------
/CAS
-------------------------------

The /CAS pin of any RAM chip in bank 0.


-------------------------------
/WE
-------------------------------

The /WE pin of any RAM chip in bank 0.


-------------------------------
/Address
-------------------------------

The 8 address pins of any RAM chip in bank 0.

( The same address goes to all RAM chips. )


-------------------------------
Data
-------------------------------

( NOTE: On a 5150 motherboard, on each data RAM chip, the Dout and Din pins are connected together.) 

D7: The Dout or Din pin of the bit 7 chip in bank 0.
D6: The Dout or Din pin of the bit 6 chip in bank 0.
D5: The Dout or Din pin of the bit 5 chip in bank 0.
D4: The Dout or Din pin of the bit 4 chip in bank 0.
D3: The Dout or Din pin of the bit 3 chip in bank 0.
D2: The Dout or Din pin of the bit 2 chip in bank 0.
D1: The Dout or Din pin of the bit 1 chip in bank 0.
D0: The Dout or Din pin of the bit 0 chip in bank 0.
