Apple quadra.lc 630.performa 640 Service Manual

 

 Basics

General Information - 3

 

The LC 630 DOS-Compatible computer adds to the basic 630 

design the ability to simultaneously run the Macintosh 

operating system and PC application programs.  The DOS-

Compatible computer ships with three boards and a DRAM 

SIMM installed on the main logic board.  The three boards 

are the DOS-compatible board, a daughterboard for sound, 

and a DOS-Compatible adapter board in the Processor Direct 

Slot (PDS).