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Apple lc 580.performa 580cd Service Manual

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 Specifications
Memory - 2
 
Memory
 
RAM
 
4 MB of dynamic RAM on board 
Expandable to 52 MB (fast-paced mode 80 ns DRAM SIMMs)
Two 72-pin SIMM connectors                       
 
ROM 
 
1 MB of ROM
 
PRAM
 
256 bytes of parameter memory
Long-life lithium battery
 
VRAM
 
1 MB of DRAM soldered to logic board
Can display thousands of colors (16-bit)