1-8 Technical Information
NOTE:
Power management can also be
activated by pressing the Suspend button on the
front of the chassis or by entering a user-
configurable hot-key sequence from the
keyboard. See Section 2 for power management
Setup information.
I/O Addressing
The processor communicates with I/O devices by I/O mapping. The hexadecimal (hex)
addresses of I/O devices are listed in Table 1-3.
Table 1-3 I/O Address Map
Address (Hex)
I/O Device Name
0000-000F
DMA controller 1 (channel 0-3)
0020-0021
Interrupt controller 1
0040-0043
Timer 1
0048-004B
Timer 2
0060
Keyboard controller data byte
0061
NMI, speaker control
0064
Keyboard controller, command/status byte
0070, bit 7
Enable NMI
0070, bits 6 through 0
Real time clock, address
0071
Real time clock, data
0078-0079
Reserved - board configuration
0080-008F
DMA page registers
00A0-00A1
Interrupt controller 2
00C0-00DE
DMA controller 2
00F0
Reset numeric error
0170-0177
Secondary IDE channel
01F0-01F7
Primary IDE channel
0278-027F
Parallel port 2
02F8-02FF
On-board serial port 2
0376
Secondary IDE channel command port
0377
Secondary IDE channel status port
0378-037F
Parallel port 1
Summary of Contents for POWERMATE P - SERVICE MANUAL 1995
Page 37: ...1 22 Technical Information ...
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