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3com epson progression 4 User Manual

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Hardware Interrupts
System I/O Address Map
Hex address*
Assigned device
DMA 
controller 
 
020   021
Interrupt controller   
 master
022   024
Epson resewed function
0 4 0 - 0 4 3
Timer, 8254-2
8042 (Keyboard and mouse)
070   071 (CMOS)
Real-time clock 
(non-maskable interrupt mask)
DMA page register, 
OAO   
Interrupt controller 2, 8259A
OCO-ODF
DMA controller 
Clear math coprocessor busy
OF1
Reset math 
OF8   OFF
Math coprocessor
 
Hard disk drive
200   207
Game 
   27A
 Parallel printer port 3
2DF
Alternate enhanced graphics adapter
 (adapter 0)
 and 
Data acquisition (adapter 0)
2FF
Serial port 2
Prototype card
348   357
DCA 3278
3C0   3CF
3D0   3DF
3F0   
3FF
 and 
790 793
AE2 and AE3
   
Enhanced graphics adapter
Color/graphics monitor adapter
 disk drive controller
Serial port 1
Data acquisition (adapter 1)
Cluster (adapter 1)
Data acquisition (adapter 2)
Cluster (adapter 2)
Hex address*
EE2   EE3
Data acquisition (adapter 3)
. 
- -
 1)
luster (adapter 4)
 
 
 (adapter 5)
 
 (adapter 8)
 WING 
,
 Recommended addresses for installing devices
EPSON Progression 4
Jumper Settings
 the illustration on page 3 for the location of the jumpers
on the main system board.
CPU Speed Jumper Settings
CPU speed
 
 (33 MHz)
 (25 MHz)
A
A
B
A
B
B
A
A
 Factory setting according to processor external speed 
 do not change
these jumpers unless you replace the 
 chip with a 
 chip.
CPU 
 Jumper Settings
CPU type*
 or 
J8
B
B
B
B
A
A
A
A
A
A
B
B
 Factory-set according to system type. You need to change jumpers
 only if you have the 
 system and you remove the original
microprocessor chip and install a new one, or if you install a future
 processor in the 
 or 
Other Jumper Settings
 
   Jumper 
number
setting
B
B
B
A
J13
A
 
 
 Factory setting
“To use a mouse connected to a port on an option card, set   to B and
J12 to A.   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 
 adapter
A 
 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