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Service Guide DOC-IT3000/4000
Chapter 2 Principles of Operation
2.3 DOC-IT CONTROLLER
The function of the Doc-It Controller is to accelerate printing speed and data file manipulation by
using the power of the Intel 80960 processor. The 80960 CPU controls all communications, printer
emulations, print control, scan control and FAX control functions. The memory on board is used
for local storage, program execution code and storage for composing/printing images. Data from
the scanner and to the printer is handled by dedicated, on board DMA logic. The high speed Host
Interface IC removes the data transfer bottleneck between the PC and the printer, and provides a
means of route execution code on and off the board, such as printer emulations. This flexibility
allows easy updates to software (firmware), printer emulation code, and fonts.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
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Summary of Contents for DOC-IT3000
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