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Hardware Interrupts
System I/O Address Map
Hex address*
Assigned device
000-OlF
DMA
controller
1,
8237A-5
020
-
021
Interrupt controller
1,
8259A,
master
022
-
024
i
Epson resewed function
040-043
Timer, 8254-2
080-081,084
8042 (Keyboard and mouse)
070
-
071 (CMOS)
Real-time clock
NMI
(non-maskable interrupt
mask)
080-08F
DMA page register, 74LS812
OAO
-
OAl
Interrupt controller 2, 8259A
OCO-ODF
DMA controller
2,8237A-5
OF0
Clear math coprocessor busy
OF1
Reset math coorocessor
OF8
-
OFF
Math coprocessor
lFO-
lF8
Hard disk drive
200
-
207
Game
IK)
1278
-
27A
I
Parallel printer port 3
280
-
2DF Alternate enhanced
graphics
adapter
2El
GPIB
(adapter 0)
2E2
and
2E3
Data acquisition (adapter 0)
2F8
-
2FF
Serial port 2
300-31F
Prototype card
348
-
357
DCA 3278
3C0
-
3CF
3D0
-
3DF
3F0
-
3F7
3F8
-
3FF
8E2
and
8E3
790
-
793
AE2 and AE3
B90
-
893
Enhanced graphics adapter
Color/graphics monitor adapter
Floppy disk drive controller
Serial
port
1
Data acquisition (adapter 1)
Cluster (adapter
1)
Data acquisition (adapter 2)
Cluster (adapter 2)
Hex address*
EE2
-
EE3
A!
Data acquisition (adapter 3)
.
.- --
r
1)
.-.
luster (adapter 4)
1
A2El
j
GPIB
(adapter 5)
C2El
WC8
1
GPIB
(adapter 8)
1
WING
INEIRAMDAC
,
~1
*
Recommended addresses for installing devices
EPSON Progression 4
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
SX/33, DX2/66 (33 MHz)
DX2&0
(25 MHz)
Jl*
J2*
J3* J4*
A A
B
A
B B
A
A
*
Factory setting according to processor external speed
clock;
do not change
these jumpers unless you replace the
DX2/50
chip with a
DX2/88
chip.
CPU
Type
Jumper Settings
CPU type*
486sw33
ODP48833 or
487SW33
ODP488DX50/88
55 J8
57
58
B
B
B
B
A A
A
A
A
A
B
B
*
Factory-set according to system type. You need to change jumpers
J5-J8 only if you have the
4Sw33
system and you remove the original
microprocessor chip and install a new one, or if you install a future
OverDrive
processor in the
4DX2/50
or
4DX2/88.
Other Jumper Settings
I
JumDer
I
Jumper
1
number
J9”
setting
A*
JlO
B
A*
B
Jll
A’
B
J12”
A
B’
J13
A
B’
J14,
J15
A’:
lB
*
Factory setting
“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.
Function
Enables the built-in mouse connector
Disables the built-in mouse connector
Enables the built-in VGA display adapter
Disables the built-in VGA display adapter
A color monitor is installed
A monochrome monitor is installed
Enables a mouse or other pointing device
connected to an option card
Disables a mouse or other pointing device
connected to an option card
Disables the password
Enables the password
Reserved
EPSON Progression 4-6
5/3/93