Main Processor System
The main processor system consists of the following:
Main processor (80960) |
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ROM |
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Processor support ASIC |
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Shuffler ASIC with swath memory |
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Input/output interfaces |
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DRAM | Swath | ||
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| To Servo Processor | RAM | |
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80960 | Processor | Shuffler |
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Support |
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CPU | Interface | ASIC |
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ASIC | To Carriage | ||||
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| Processor | |
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Demultiplexed | DRAM |
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SIMM |
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Bus Interface |
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Socket |
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| Centronics |
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| Interface |
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ROM | DRAM |
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Main Processor
The main processor interprets graphics4language commands received through the input/output (I/O), prepares a bit map of the data to be printed, and issues commands to the servo processor to synchronize the carriage and roller movements for each swath printed.
ROM
The firmware code is contained in either two masked ROMs or four EPROMs on the main PCA.
The EPROM integrated circuits are socketed; Move them from the old Main PCA to the new one, when you replace the Main PCA.
C3187490000 | FunctionalOverview 5423 |