Oki 24DX manual Eeprom, Menu

(3)DRAM's

16-Megabyte DRAM (64 Mbit DRAM x 2) is mounted as resident memory to be used for storing the program and providing various buffers. This DRAM is expandable up to 128 Mbytes by adding expansion memory (SIMMs). This DRAM provides the areas shown in the following table.

Memory area		Use	Memory capacity setting
			MENU	Expansion RAM
System area		Working area used for the program	Fixed	Fixed
Raster buffer		Stores converted bit image data	Enable	Expandable
Receive buffer		Stores temporarily the data received	Enable	Expandable
		from the host interface
Page buffer		Adds print information to the analyzed	–	Expandable
		receive data and stores the resulted
		data.
DLL/macro	buffer	Stores soft fonts and macro data.	–	Expandable
Font cache	buffer	Stores bit map fonts generated by the	Enable	Expandable
		font rasterizer based on scalable font
		information

(4)EEPROM

The EEPROM has a 16-kbit capacity and stores the following data.

•Menu data

•Various counter data (page counter, drum counter, fuser counter, etc.)

•Adjustment parameters (LED head drive time, print start position, etc.)

(5)LSI (LZ9FF22)

Built in device	Function
Serial I/O port	Control of serial interface between controller and 2nd tray, 3rd tray, Multi purpose feeder
	Control of serial interface between controller and Duplex unit
Motor driver controller	Control of Hopping motor
I/O port	Inputting of various sensor signals
	Outputting of various control signals

(6)Host interface

This printer has the following interfaces to the host.

•Centronics bidirectional parallel interface

•RS232C interface

•OKI HSP interface (Option)

The single effective interface or the automatic interface select mode can be selected using the menu. If the busy state of the printer continues for a long time period, the buffer near- full control releases the busy status at constant intervals even if the host side is busy so not to cause the interface time-out at the host side.

40930701TH DRAFT Vesion 17 /