Epson Equity 486DX2/50 PLUS User Manual - Page 109
Installing and Removing Options, Jumper settings for base memory
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Jumper settings for base memory Base memory Jumper JP13 640KB A' 512KB B 256KB B l Factory setting Jumper settings for extended memory Jumper JP14 A' A B l Factory setting Jumper settings for alternate 25 MHz microprocessor Jumper number Jumper setting Function JP2 A B* 80487SX installed; NMI signal 80486SX installed; NMI signal 80487SX installed; FERR signal 80486SX installed; FERR signal * Factory setting; these jumpers are not used for the 50 MHz microprocessor 6-6 Installing and Removing Options
Jumper settings for base memory
Base memory
Jumper JP13
640KB
A’
Jumper JP14
A’
512KB
B
A
256KB
B
B
l
Factory setting
Jumper settings for extended memory
l
Factory setting
Jumper settings for alternate 25 MHz microprocessor
Jumper
Jumper
Function
number
setting
JP2
A
B*
80487SX installed; NMI signal
80486SX installed; NMI signal
80487SX installed; FERR signal
80486SX installed; FERR signal
* Factory setting; these jumpers are not used for the 50 MHz microprocessor
6-6
Installing and Removing Options