User manual
Table Of Contents
- Computer Specifications
- Major Subassemblies
- System Board Components
- Jumper Settings
- SIMM Installation
- Video Memory
- External Cache
- Microprocessor Upgrades
- Hard Disk Drive Types
- Drive Option Information
- DMA Assignments
- Hardware Interrupts
- System Memory Map
- System l/O Address Map
- Connector Pin Assignments
- Tested Operating Environments
- Installation/Support Tips
- Information Reference List
NEW EPSON ActionPC 5000, ActionTower 5000
System l/O Address Map
Connector Pin Assignments
Parallel
port connector pin assignments (CN12)
Pin Signal
Pin Signal
Pin Signal
1
Strobe’
10
ACK *
19
Signal ground
2
Data 0
11
Busy
20 Signal ground
-Hex address
000-01F
020 - 03F
022 - 024
034,03B,03C
040 - 05F
060-06F
Assigned device
DMA controller 1,8237
interrupt controller 1,8259
UMC 82C481 chip set configuration register
AD12 chip set configuration registers
Timer, 8254
Keyboard controller, 8042
070 - 07F (CMOS)
I
Real-time clock NMI (non-maskable interrupt)
1
8
IData
117
ISelectin* I
9
I
Data 7
1
18
I
Signalground
1
* Active low logic
Serial port connector pin assignments (CN8 and CN11)
Keyboard and mouse connector pin assignments (CN5 and CN6)
Pin
Signal Pin Signal
1
Data
4 VCC
2 NC 5
Clock
3 Ground 6 NC
VGA port
connector pin assignments
(CN15)
Game port connector pin assignments (CN7)
Power supply connector pin assignments (CN1)
Pin
I
Signal
[Pin
I
Signal
8/94
NEW EPSON ActionPC 5000, ActionTower 5000 - 9