Service Procedures
Digital DECpc LP
30
MCS Logistics Engineering - Nijmegen
DECpc 450D2LP/466D2LP CPU Board Jumper Settings
Feature
Description
Setting
Vacancy socket
Empty or Intel Overdrive
microprocessor installed
Intel 486DX or Intel 486DX2
installed
J101, pins 1 and 2 jumpered
J102, pins 1 and 2 jumpered
J103, pins 1 and 2 jumpered
J101, pins 2 and 3 jumpered
J102, pins 2 and 3 jumpered
J103, pins 2 and 3 jumpered
Processor type
(1)
486DX
486SX
J114, pins 1 and 2 jumpered
J115, pins 1 and 2 jumpered
J114, pins 2 and 3 jumpered
J115, pins 2 and 3 jumpered
Cache size
128 KB
256 KB
J103, pins 1 and 2 jumpered
J104, pins 1 and 2 jumpered
J103, pins 2 and 3 jumpered
J104, pins 2 and 3 jumpered
CPU clock input
25 MHz
(2)
33 MHz
(1)
40 MHz
50 MHz
J109 jumpered
J110 open
J111 open
J112 open
J109 jumpered
J110 open
J111 open
J112 open
Not applicable
Not applicable
(1)
DECpc 466d2LP only
(2)
DECpc 450d2LP only
