Page 144 - DCAP108_DIGITAL_CIRCUITS_AND_LOGIC_DESIGNS
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Unit 8: Memory
Notes
x 0
x 1 AND
Array
x
m
y 0
y
OR 1
Array
y n
Programmable Logic Array (PLA)
0p5
0p4
0p3
0p2
0p1
0p0
S3
S2
S1
S0
PC Write
PC WriteCond
IorD
MemRead
MemWrite
IRWrite
MemtoReg
PCSource1
PCSource0
ALUOp1
ALUOp1
ALUSrcB1
ALUSrcB0
ALUSrcA
RegWrite
RegDst
NS3
NS2
NS1
NS0
(d)
The PROM chip can be easily damaged by mishandling. Static electricity can
zap the chip’s memory, and the little prongs that plugged into the circuit board
can be easily bent or broken.
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