The AN (military)/UYK-8 used the same 30-bit words and instruction set as the AN/USQ-17 and AN/USQ-20 Naval Tactical Data System (NTDS) computers, but could have two central processing units instead of just one. Instructions were represented as 30-bit words, in the following format: f 6 bits function code j 3 bits jump condition designator k 3 bits partial word designator b 3 bits which seven index register to use (B0=non used) s 2 bits which S (5bits) register to use S0,S1,S2,S3(P(17-13)) y 13 bits operand address in memory memory address=Bb+Ss+y=18bit(262144Words) Numbers were represented as full 30-bit words, this allowed for five 6-bit alphanumeric characters per word. The main memory was increased to 262,144 words (256K words) of magnetic core memory. The available processor registers were: *one 30-bit accumulator (A) register. *a contiguous 30-bit Q register (total of 60 bits for the result of multiplication or the dividend in division). *seven 30-bit index register (B) registers. Military computers
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Words begining with AN/UYK-8:
AN/UYK-8
AN/UYK-8
The AN (military)/UYK-8 used the same 30-bit words and instruction set as the AN/USQ-17 and AN/USQ-20 Naval Tactical Data System (NTDS) computers, but could have two central processing units instead of just one. Instructions were represented as 30-bit words, in the following format: f 6 bits function code j 3 bits jump condition designator k 3 bits partial word designator b 3 bits which seven index register to use (B0=non used) s 2 bits which S (5bits) register to use S0,S1,S2,S3(P(17-13)) y 13 bits operand address in memory memory address=Bb+Ss+y=18bit(262144Words) Numbers were represented as full 30-bit words, this allowed for five 6-bit alphanumeric characters per word. The main memory was increased to 262,144 words (256K words) of magnetic core memory. The available processor registers were: *one 30-bit accumulator (A) register. *a contiguous 30-bit Q register (total of 60 bits for the result of multiplication or the dividend in division). *seven 30-bit index register (B) registers. Military computers
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A
AB | AC | AD | AE | AF | AG | AH | AI | AJ | AK | AL | AM | AN | AO | AP | AR | AS | AT | AU | AW | AX | AY | AZ |Words begining with AN/UYK-8:
AN/UYK-8
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