CPU BOARD JUMPER STATUS CHART
DESIGNATION
LOCATION
FUNCTION MEANING
SETTING DEFAULT
Jl MIDDLE CENTER REMOTE
RESERVED FOR OPEN n
NEAR Bl
8.
S2 GAME FUTURE
I&2
-
(NOTE 1) RESET
1 DEVELOPMENT
J2
MIDDLE CENTER FUTURE 1 RESERVED FOR
OPEN
NEAR Bl
8,
U86 USE FUTURE
l&2
m
(NOTE 1) ONLY
DEVELOPMENT
2&3
J3
1 LEFTCENTER 1 WATCHDOG FACTORY DEFAULT
OPEN
SOFTWARE FAIL 182
SAFEGUARD
RESERVED FOR OPEN
FUTURE
l&2
DEVELOPMENT
RESERVED FOR
s
OPEN
(NOTE 2)
J4
(NOTE 1)
J5
NEAR D6 & U64
UPPER LEFT
NEAR P8
&
U32
UPPER LEFT
NEAR PlO & U33
UPPER LEFT
NEAR PI6
&
U33
NONE
USE
ONLY
MAIN BOOT
ROM SIZE
AND TYPE
MAIN BOOT
ROM SIZE
AND TYPE
MAIN BOOT
ROM SIZE
AND TYPE
NOT USED
FUTURE
, DEVELOPMENT
1 CONFIGURES U32
l&2
OPEN
(NOTE 3)
J12 NONE
AND TYPE
NOT USED
FOR 4 MEGABYTE
BOOT ROM
CONFIGURES U
FOR 4 MEGABYTE
BOOT ROM
CONFIGURES U32
FOR 4 MEGABYTE
BOOT ROM
NONE
NEGATIVE OPEN
n
VIDEO SYNC
I&2
<
(NOTE 4)
J13
(NOTE 1)
P20
LOWER LEFT JTAG RESERVED FOR OPEN
n
NEAR
U25
&
UIOO
PROCESSOR FUTURE 18.2
FEATURES DEVELOPMENT
3&4
UPPER LEFT CPU BOARD USED FOR DO NOT ---
NEAR P22
&
U32 PRODUCTION FACTORY
USE
TEST JACK TEST ONLY JUMPERS
NOTES:
1
Jumper is not required for any version of this CPU Board. Connectrons are made with copper on board
2.
Jumper is not required for versions 01-05 of this CPU Board. Jump pins 1 8 2 for version 06 and up.
3.
Jumper changes for some sizes and types of ROM. Jumper positions shown in ROM kit instructions.
4.
Jumper is not required for any version of this CPU Board. These pins are not present on CPU Board.
5.
Jumper is not required for production video monitors. Jump pins 1
&
2 for positive sync type monitors.
3-6
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