User`s guide

Motherboard: features & upgrades
FT1200 HANDBOOK 5/23
Motherboard Resources
Memory Map
Address Range
(decimal)
Address Range
(hex)
Size Description
1024 K - 1048576 K 100000 - 3FFFFFFF 1023 MB Extended memory (EDO
memory)
1024 K - 524288 K 100000 - 1FFFFFFF 511 MB Extended memory (SDRAM)
928 K - 1024 K E8000 - FFFFF 96 KB System BIOS
800 K - 928 K C8000 - E7FFF 128 KB Available high DOS memory
(open to ISA and PCI bus)
640 K - 800 K A0000 - C7FFF 160 KB Video memory and BIOS
639 K - 640 K 9FC00 - 9FFFF 1 KB Extended BIOS data (movable
by memory manager software)
512 K - 639 K 80000 - 9FBFF 127 KB Extended conventional memory
0 K - 512 K 00000 - 7FFFF 512 KB Conventional memory
DMA Channels
DMA Channel Number Data Width System Resource
0 8 or 16 bits Audio
1 8 or 16 bits Audio/parallel port
2 8 or 16 bits Floppy drive
3 8 or 16 bits Parallel port (for ECP)/audio
4 Reserved - cascade channel
5 16 bits Open
6 16 bits Open
7 16 bits Open
I/O Map
Address (hex) Size Description
0000 - 000F 16 bytes PIIX4 - DMA 1
0020 - 0021 2 bytes PIIX4 - interrupt controller 1
002E - 002F 2 bytes Super I/O controller configuration registers
0040 - 0043 4 bytes PIIX4 - Counter/Timer 1
Continued