Apple LaserWriter Select 310 Especificaciones descargar pdf (Pagina 21)

CHAPTER 1

LaserWriter Select 310 Hardware

Memory Capabilities

Memory Capabilities 1

The standard conﬁguration of the LaserWriter Select 310 printer comes with 1MB of ROM

and 1.5 MB of DRAM. Figure 1-6 shows the positioning of the DRAM and ROM on the

printer’s main circuit board.

Figure 1-6

The ROM and DRAM locations on a printed circuit board

ROM Capability 1

The LaserWriter Select 310 printer has a single ROM installed on the board. It

is an 8-megabit, 42-pin masked ROM, and it stores the diagnostic software, fonts,

and PostScript interpreter required by the printer. Currently you cannot expand

ROM capacity.

SIMM card slot

DRAM

512K x 8

8-megabit ROM

Centronics connector

Presents

32-bit interface

to microprocessor

512K x 8

256K x 16

Serial port

Detail of SIMM card

8 256K x 4 DRAMs provide 1 MB of storage.

8 1 megabit x 4 DRAMs provide 4 MBs of storage.

Note: You must use 32-bit wide SIMMs.

72-pin SIMM card accomodates

up to 8 DRAM devices. Layout of

devices on board depends upon

manufacturer.

Pin 1 Pin 36 Pin 37 Pin 72

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 67 68

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Apple LaserWriter Select 310 Especificaciones Pagina 21