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read-only memory (ROM) registers, an accumulator, and an arithmetic logic unit (ALU). This
assembly provides all data functions and transfers for digital storage.
Register RAM @
manipulation.
Constant ROM @
manipulation.
Accumulator @I
U7 and U9 form the 12-bit Accumulator, which receives and holds all results of ALU
operations.
Buffer @
U5 and Ull are three-state data buffers that allow the Accumulator data to be transferred to
the Source Bus.
Arithmetic Logic Unit (ALU) @
U2, U3, and U4 are the main Arithmetic Logic Unit (ALU). U16 provides high-speed carry
look-ahead. U14 decodes ALU outputs to determine whether a zero-value result has been
generated.
Pipeline Register @
U12 and U24 form an instruction Pipeline Register for data manipulation instructions.
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