Если там High level то тогда он не работает со внешнеы памятью
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External Access input: when during RESET, EA is held at a TTL
HIGH level, the CPU executes out of the internal program ROM,
provided the program counter is less than 32768. When EA is held
at a TTL LOW level during RESET, the CPU executes out of
external program memory via Port 0 and Port 2. EA is not allowed
to float
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на другом траке на чипе теже цифры - 13411801- ?
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