M o t h e r b o a r d : f e a t u r e s & u p g r a d e s
FT1200 HANDBOOK 5/25
Address (hex)
Size
Description
03CE - 03CF
2 bytes
Video (VGA)
03D4 - 03D5
2 bytes
Video (VGA)
03DA
1 byte
Video (VGA)
03E8 - 03EF
8 bytes
COM3
03F0 - 03F5
6 bytes
Floppy channel 1
03F6
1 byte
Primary IDE channel command port
03F7 (Write)
1 byte
Floppy channel 1 command
03F7, bit 7
1 bit
Floppy disk change channel 1
03F7, bits 6:0
7 bits
Primary IDE channel status port
03F8 - 03FF
8 bytes
COM1
04D0 - 04D1
2 bytes
Edge/level triggered PIC
0530 - 0537
8 bytes
Windows Sound System
0604 - 060B
8 bytes
Windows Sound System
LPT
n
+ 400h
8 bytes
ECP port, LPT
n
base a 400h
0CF8 - 0CFB*
4 bytes
PCI configuration address register
0CF9**
1 byte
Turbo and reset control register
0CFC - 0CFF
4 bytes
PCI configuration data register
0E80 - 0E87
8 bytes
Windows Sound System
0F40 - 0F47
8 bytes
Windows Sound System
0FF0 - 0FF7
8 bytes
CS4236B audio control
FF00 - FF07
8 bytes
IDE bus master register
FFA0 - FFA7
8 bytes
Primary bus master IDE registers
FFA8 - FFAF
8 bytes
Secondary bus master IDE registers
007C, bits 5:4
2 bits
Chassis fan RPM sense selection
* DWORD access only
** Byte access only
NOTE
This table does not list I/O addresses that may be used by add-in
cards in the system.