I/O Address Map - NEC PowerMate Enterprise Manual

1-12 Technical Information
Address (Hex)
0000-000F
0020-0021
002E-002F
0040-0043
0048-004B
0060
0061
0064
0070, bit 7
0070, bits 6 through 0 PIIX4 - Real time clock, address
0071
0078
0079
0080-008F
00A0-00A1
00B2-00B3
00C0-00DE
00F0
0170-0177
01F0-01F7
0200-0207
0220-022F
0240-024F
0278-027F
0290-0297
02E8-02EF
02F8-02FF
0300-0301
0330-0331
0332-0333
0334-0335
* In Plug and Play systems, these addresses are typical but may vary by configuration.
** Only accessible by DWORD accesses.
*** Byte access only.
Table 1-4 I/O Address Map*
I/O Device Name
PIIX4 - DMA controller 1 (channel 0-3)
PIIX4 - Interrupt controller 1
Super I/O controller configuration registers
PIIX4 - Timer 1
PIIX4 - Timer 2
Keyboard controller byte - Reset IRQ
PIIX4 - NMI, speaker control
Keyboard controller, command/status byte
PIIX4 - Enable NMI
PIIX4 - Real time clock, data
Reserved - board configuration
Reserved - board configuration
PIIX4 - DMA page registers
PIIX4 - Interrupt controller 2
APM control
PIIX4 - DMA controller 2
Reset numeric error (numeric data processor)
Secondary IDE channel
Primary IDE channel
Audio/Game port
Audio (Sound Blaster compatible)
Audio (Sound Blaster compatible)
Parallel port 2
Management extension hardware
COM4/Video (8514A)
COM2
MPU-401 (MIDI)
MPU-401(MIDI)
MPU-401 (MIDI)
MPU-401 (MIDI)
alternate
alternate
alternate
alternate