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EPSON NX
Hardware Interrupts
System l/O Address Map
Hex address'
DMA controller 1,8237A-5
020 - 021
Interrupt controller 1,8259A, master
022 - 024
Epson reserved function
070 - 071 (CMOS) 1 Real-time clock NMI (non-ma&able interrupt mask)
OAO-OAl
OCO - ODF
DMA controller 2,8237A-5
Clear math coprocessor busy
OF1
OF8 - OFF
200-207
278 - 27A
LAN adapter
348-357
DCA 3278
PC network (low address)
384-387
Resewed
378 - 37A
SDLC, bisync 2
390-393
Cluster
3A0 - 3AF
Parallel printer port 1
3C0 - 3CF
Enhanced graphics adapter
3D0 - 3DF
Color/graphics monitor adapter
3F0 - 3F7
Floppy disk drfve controller
Data acquisttiin (adapter 1)
Cluster (adapter 1)
790 - 793
AE2 and AE3
Data acquisttiin (adapter 2)
Cluster (adapter 2)
EE2 - EE3
1390 - 1393
EPSON NX-6
Hex address*
Epson reserved function
F089 - FO8D
Epson resewed function
Jumper Settings
See the illustration on page 3 for the location of the jumpers
on the main system board.
CPU Speed Jumper Settings*
CPU speed
Factory settings
l
CPU Type Jumper Settings'
CPU type
This table shows the factory settings for jumpers J5-J8. You need to change
l
these settings only if you install a future CverDrfve processor.
Other ]umper Settings
I
A'
I
B
I A*
Factory setting
l
"To use a mouse connected to a port on an option card, set J9 to B and J12 to
A. lf you connect another type of pointing device (such as a joy stick) to the
option card port, set both jumpers to A.
6/30/93
B
A
A
J6
A
A
B
Enables the built-in mouse connector
Enables the built-in VGA display adapter
Disables the built-in VGA dlsptay adapter
A color monitor is Installed
A monochrome monitor is installed
Enables a mouse or other polnting device
connected to an opt&n card
Disables a mouse or other pointing device
connected to an option card
Disables the password
Enables the password
Reserved
J4
A
J6
B
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