User`s guide

Motherboard: features & upgrades
5/24 FT1200 HANDBOOK
Address (hex) Size Description
0048 - 004B 4 bytes PIIX4- Counter/Timer 2
0060 1 byte Keyboard Controller Byte - reset IRQ
0061 1 byte PIIX4 - NMI, speaker control
0064 1 byte Keyboard controller, CMD/STAT Byte
0070, bit 7 1 bit PIIX4 - enable NMI
0070, bits 6:0 7 bits PIIX4 - real time clock, address
0071 1 byte PIIX4 - real time clock, data
0078 1 byte Reserved - motherboard configuration
0079 1 byte Reserved - motherboard configuration
0080 - 008F 16 bytes PIIX4 - DMA page registers
00A0 - 00A1 2 bytes PIIX4 - interrupt controller 2
00B2 - 00B3 2 bytes APM control
00C0 - 00DE 31 bytes PIIX4 - DMA 2
00F0 1 byte Reset numeric error
0170 - 0177 8 bytes Secondary IDE channel
01F0 - 01F7 8 bytes Primary IDE channel
0200 - 0207 8 bytes Audio/game port
0220 - 022F 16 bytes Audio (Sound Blaster compatible)
0240 - 024F 16 bytes Audio (Sound Blaster compatible)
0278 - 027F 8 bytes LPT2
0290 - 0297 8 bytes Hardware monitor
02E8 - 02EF 8 bytes COM4/Video (8514A)
02F8 - 02FF 8 bytes COM2
0300 - 0301 2 bytes MPU-401 (MIDI)
0330 - 0331 2 bytes MPU-401 (MIDI)
0332 - 0333 2 bytes MPU-401 (MIDI)
0334 - 0335 2 bytes MPU-401 (MIDI)
0376 1 byte Secondary IDE channel command port
0377 1 byte Floppy channel 2 command
0377, bit 7 1 bit Floppy disk change, channel 2
0377, bits 6:0 7 bits Secondary IDE channel status port
0378 - 037F 8 bytes LPT1
0388 - 038D 6 bytes AdLib (FM synthesizer)
03B4 - 03B5 2 bytes Video (VGA)
03BA 1 byte Video (VGA)
03BC - 03BF 4 bytes LPT3
03C0 - 03CA 11 bytes Video (VGA)
03CC 1 byte Video (VGA)
Continued