Apple 310 manual Memory Capabilities, ROM Capability

C H A P T E R 1

LaserWriter Select 310 Hardware

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 1-6The ROM and DRAM locations on a printed circuit board

SIMM card slot

8-megabit ROM

DRAM

512K x 8

Presents

512K x 8 32-bit interface to microprocessor

256K x 16

Centronics connector Serial port

Detail of SIMM card

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

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.

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.

Memory Capabilities 9