SPLDs were the first type of PLDs to be widely used and played a significant role in 8-bit computer design.
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=== Programmable Array Logic (PAL) ===
* I/O interface logic: They simplified the interface between the CPU and various peripherals.
* Example: The CPC 6128 used a PAL for part of its memory management and bank switching logic.
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=== Generic Array Logic (GAL) ===