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. - - - - - - - - - - - - , - - - - - - - - - - - - - - - - - - - - - - - - - - ,
U
':~2K
Normal
Code
32K
Normal
Data
32K
Normal
Code
32K
System
Data
System/Normal and Code/Data Lines
32K
Normal
Code
Data
32K
System
Code
Data
System/Nolrma1 Lines
B
32K
Norma
1
System
Code
32K
Normal
System
Data
Code/Data Lines
C
Figure 2-1.
Off-Board Memory Expansion Using
Normal/System and Code/Data Signals
STARTING ADDRI:SS OF ON-BOARD RAM
On-board RAM can be located in ei ther the upper or lower 32K of the
Am96/4116 memory space.
For the upper 32K byte space, connect a jumper
between pi n 192 and 193.
To locate RAM in the lower 32K byte area
reconnect the jumper between pi n 192 and 193.
To locate RAM in the
lower 32K byte area reconnect the jumper between pins 193 and 194.
WAIT STATE
FOI~
SLOW ROM!;
One wait state is l"equired for Rm1s with cycle time slower than 400
nanoseconds.
Instaillation of jumper 186 to 187 introduces the wait
state.
2-3
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