4-2. LC Programming Approach
U3-1021 4-4 2/99
Westinghouse Proprietary Class 2C
The SLC algorithms reference locations in LC memory in one of two ways:
• As a series of 16-bit registers.
• As a series of 256-word circular buffers (for ASCII data only).
Figure 4-3 illustrates the correlation between the register numbers and memory
addresses.
Figure 4-4 illustrates the correlation between the buffers and memory
addresses.
Figure 4-3. Registers Numbers and Memory Addresses (LC Algorithms)
Register
Number
Corresponding LC Dual Port
Memory Address
A0000H
A0002H
A1FFCH
A1FFEH
•
•
•
Register range = 0 through
4095
Each register number
references a 16-bit word
0
1
4094
4095
•
•
•
A0004H2
A0006H3
Range of memory
addresses = A0000H
through A1FFEH
Each address
references an 8-bit byte
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