NEC PowerMate CT manual Resources, Addresses, System Memory Map, Address Map

Resources

The system memory map, I/O addresses, and DMA settings are given in the following sections. System interrupt settings, parallel interrupt settings, and serial interrupt settings are included in Section 2, “System Configuration.”

Memory Map

The system memory map is shown in the following table.

		System Memory Map
Memory Space		Function
000A0000	- 000AFFFF	Winfast 3D S320 II (TNT2-PRO)
000B0000	- 000BFFFF	Winfast 3D S320 II (TNT2-PRO)
000C8000 - 000D7FFF		Winfast 3D S320 II (TNT2-PRO)
08000000 - 09FFFFFF		Intel® 82820 Processor to AGP Controller
08000000 - 09FFFFFF		Winfast 3D S320 II (TNT2-PRO)
0A000000	- 0AFFFFFF	Winfast 3D S320 II (TNT2-PRO)
0A000000 - 0B0FFFFF		Intel® 82820 Processor to AGP Controller
0B000000	- 0B00FFFF	Winfast 3D S320 II (TNT2-PRO)
F8000000 - FBFFFFFF		Intel® 82820 Processor to I/O Controller
FF800000 - FFFFFFFF		Motherboard Resources

I/O Addresses

The processor communicates with I/O mapping. The hexadecimal (hex) addresses of I/O devices are listed in the following table.

Note In plug and play systems, these addresses are typical but may vary by configuration.

	I/O Address Map
Address (Hex)	I/O Device Name
0000-000F	DMA controller 1
0020-0021	Programmable interrupt controller
0040-0043	System Timer
0060	Standard 101/102-key or MS Natural keyboard
0061	System speaker
0064	Standard 101/102-key or MS Natural keyboard
0070-0071	System CMOS/real time clock
0081-008F	DMA controller
00A0-00A1	Programmable interrupt controller

System Board 4-13