I/O & Memory Map; Timer & Dma Channels Map; Interrupt Map - Gigabyte GA - 586STX User Manual

5.2. I/O & MEMORY MAP
MEMORY MAP:
[0000000-009FFFF]
[00A0000-00BFFFF]
[00C0000-00DFFFF]
[00E0000-00EFFFF]
[00F0000-00FFFFF]
[0100000-BFFFFFF]
I/O MAP: [000-01F]
[020-021]
[022-023]
[040-05F]
[060-06F]
[070-07F]
[080-09F]
[0A0-0BF]
[0C0-0DF]
[0F0-0FF]
[1F0-1F8]
[278-27F]
[2B0-2DF]
[2F8-2FF]
[360-36F]
[378-37F]
[3B0-3BF]
[3C0-3CF]
[3D0-3DF]
[3F0-3F7]
[3F8-3FF]
5.3. TIMER & DMA CHANNELS MAP
TIMER MAP: TIMER Channel-0 System timer interrupt
TIMER Channel-1 DRAM REFRESH request
TIMER Channel-2 SPEAKER tone generator
DMA CHANNELS: DMA Channel-0 Available
DMA Channel-1 IBM SDLC
DMA Channel-2 FLOPPY DISK adapter
DMA Channel-3 Available
DMA Channel-4 Cascade for DMA controller 1
DMA Channel-5 Available
DMA Channel-6 Available
DMA Channel-7 Available

5.4. INTERRUPT MAP

System memory used by DOS and application program.
Display buffer memory for VGA/ EGA/CGA/MONOCHROME adapter.
Reserved for I/O device BIOS ROM or RAM buffer.
Reserved for PCI device ROM.
System BIOS ROM.
System extension memory.
DMA controller.(Master)
INTERRUPT controller.(Master)
CHIPSET control registers I/O ports.
TIMER control registers.
KEYBOARD interface controller.(8042)
RTC ports & CMOS I/O ports.
DMA register.
INTERRUPT controller.(Slave)
DMA controller.(Slave)
MATH COPROCESSOR
HARD DISK controller.
PARALLEL port-2.
GRAPHICS adapter controller.
SERIAL port-2.
NETWORK ports.
PARALLEL port-1
MONOCHROME & PRINTER adapter.
EGA adapter.
CGA adapter.
FLOPPY DISK controller.
SERIAL port-1.
5-3
AT Technical Information