%2.2 PS Board (OL610e/PS)2.2 PS Board (OL610e/PS)
The PS board consists of two Program & Font ROM's, DRAM's, an EEPROM, and a host interface
circuit.
(1) Program & Font ROM's
The Program & Font ROMs store the PostScript Level II program and its fonts. Mask ROM is used for the
Program & Font ROMs.
(2) DRAM
0.5MB of DRAM's reside on the PS board.
(3) EEPROM
4,096 bit-Electrically Erasable PROM (EEPROM) is mounted on the PS board for storing the PostScript's
menu settings.
(4) LocalTalk I/F
AppleTalk protocol data is received from the host system via LocalTalk interface. The block diagram is
shown in Figure 2-4.
Figure 2-4 PS Board Block Diagram
OKI OL600/610ex (96-01-18