| 1. | Input / Output was totally asynchronous, and performed by peripheral processors.
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| 2. | Peripheral processor ( PP or PPU ) instructions are completely different from CPU instructions.
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| 3. | By attaching an IBM 7044 as a peripheral processor throughput was more than doubled.
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| 4. | A 6600 / 7600 Peripheral Processor system was used for I / O, largely unchanged.
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| 5. | In other words, only one peripheral processor at a time can use a particular data channel.
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| 6. | By attaching an IBM 7044 as a peripheral processor throughput of the 7094 was more than doubled.
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| 7. | Each STP task was similar in nature to the peripheral processor programs in earlier Control Data operating systems.
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| 8. | The CP had no instructions for input and output, which are accomplished through Peripheral Processors ( below ).
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| 9. | The peripheral processors had 4096 bytes of 12-bit memory words and an 18-bit accumulator register.
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| 10. | The operating system ran on the peripheral processors, while the user's application ran on the CPUs.
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