Apple LaserWriter Select 310 Printer - Manual (Page 21)

C H A P T E R 1
LaserWriter Select 310 Hardware
Memory Capabilities 9
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