Technical data

Device Mapping
DIGITAL HiNote Ultra 2000 Service Guide
B–3
I/O Address Map
Range
(hexadecimal) Function
000 - 00F DMA controller A
020 - 021 Master interrupt controller
024 Index register - system board
026 Data register - system board
040 - 043 Interval timer
060 - 06F Keyboard controller
070 - 07F Real-time clock (RTC), NMI
080 - 08F DMA page register
0A0 - 0A1 Slave interrupt controller
0C0 - 0CF DMA controller B
0F0 Clear math coprocessor
0F1 Reset math coprocessor
0F8 - 0FF Math coprocessor
150 - 157 ESS 1878 control interface
170 - 177 Secondary IDE controller
1F0 - 1F7 IDE controller
201 MIDI/Joystick
220-22F On-board Audio (ESS 1878)
278 - 27F
*
LPT2
2E8 - 2EF
*
COM4
2F8 - 2FF
*
COM2
330-331 MPU 401 Audio
378 - 37F
*
LPT1
388 -38B FM synthesizer Audio
3B0 - 3BB Mono VGA registers
3BC - 3BE
*
LPT3
3C0 - 3CF VGA registers
3D0 - 3DF Color VGA registers
3E0 - 3E1 PCMCIA controller
3E8 - 3EF
*
COM 3
3F0 - 3F7
*
Diskette controller
3F6 - 3F7
*
IDE controller (alt status, device address)
3F8 - 3FF
*
COM1
CF8 - CFF Cardbus PCI port interface
*Enabled and disabled using the Setup Utility or Windows 95