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EPSON ActionPC 7000, ActionTower 7000, Endeavor 486i
System I/O Address Map
Serial port connector pin assignments (J4 and J5)
Pin
Signal
Pin
Signal
1
Data carrier detect
6
Data set ready
2
Receive data
7
Request to send
3
Transmit data
8
Clear to send
4
Data terminal ready
9
Ring indicator
Hex address
000-01F
020-03F
Assigned device
DMA controller 1, 8237
Interrupt controller 1, 8259
1 022-024
Reserved
I5
1
Ground
II
I I
040-05F
060-06F
070-07F
Timer, 8254
Keyboard controller, 8242PE
Real-time clock NMI (non-maskable Interrupt)
Keyboard and mouse connector pin assignments (J1 and J3)
1 080-09F 1
DMA page register, 74LS612
Pin
Signal
Pin
Signal
1
Data 4
Vcc
2
NC 5 Clock
3 Ground 6 NC
0A0-0BF
0C0-0DF
0F0
Interrupt controller 2, 8259
DMA controller 2, 8237
Clear math coprocessor
1
OF1
Reset math coprocessor
VGA port connector pin assignments (J7)
0F8-0FF
1F0-1F8
1E0-1E7
Math coprocessor
Primary hard disk Interface
Secondary hard disk Interface
1 200-207 1
Game I/O
278-
27F
2B0-2DF
2E1
Parallel printer port
2
Alternate enhanced graphics adapter
GPIB (adapter 0)
1
2E2, 2E3
1
Data acquisition (adapter 0)
2F8-2FF
300-31F
360-363
Serial port 2
Prototype card
Available
LED connector pin assignments (J21)
Pin
Signal
Pin
Signal
1
NC
11
Power LED (yellow)
2
Turbo LED (yellow)
12
NC
3
Turbo LED (white)
13
Power LED
(white)
1 368-36B
Available
378-37F
380-38F
390-393
Parallel printer port 1
Available
Available
4 NC
5 NC
6 NC
7
NC
8
NC
14 NC
15 NC
16 NC
17
Speaker
(red)
18
NC
1 3A0-3AF
Available
3B0-3BF
3C0-3CF
3D0-3DF
Available
Available
Available
1 3F0-3F7
Diskette drive controller
9 Hardware reset (white)
HDD LED connector pin assignments (J15)
3F8
-3FF
6E2, 6E3
790-
793
Serial port
1
Available
Available
1
AE2, AE3 Available
B90, B93
EE2, EE3
1390-1393
Available
Available
Available
Pin 1 Signal
1
1 Red
1
Pin 1 Signal
1
22E1 Available
Power supply connector pin assignments (J9)2390-2393
42E1
63E1
Available
Available
Available
1
82E1 Available
A2E1
C2E1
E2E1
Available
Available
Available
Diskette
dke
connector pin
assignmL&s
(112)
Connector Pin Assignments
Pin* 1 Signal
2
1 NC
Parallel port connector pin assignments (J6)
4 NC
6 NC
8 Index
10 Motor A
12
Drive B
14 Drive A
16 Motor B
18
Direction
22 Write data
24 Write enable
26 Track 0
28
Write protect
30 Read data
32
Select header
0
34
Disk change
6
Data
4
15
Error *
24
Signal ground
7
Data
5
16
lnit *
25
Signal ground
8
Data
6
17
Selectin *
9
Data
7
18
Signal around
* All odd-numbered pins are grounds
* Active low logic
8 - ActionPC 7000, ActionTower 7000, Endeavor 486i 5/19/95