HP 330 - RAM Boards

Lower
Sy.nem Board
Address
Lower
010 II
Address
Upper
System Board
Address
Upper
010 II
Address
RAM
Block
Select
RAM
RAM
Address
Control -t-
Signals
RAM Block
4,8, or 16MB
32 Bit Wide +
4 Parity Bits
Includes
Buffers & MUX
Write
System
Board
Select
~
I
I_atch I
I
System Board
r
Select
DIO II
Board
Select
~
010 II
Select
Parity
Bits
f+-
Parity
Check &
Generate
I
50MHz
Generato
Address
Select &
Autosize
IR7
from CPU
~ __ .... System Boord
Data
~ __ .... 010 II
Data
Bus
Clock