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SyncusTech
USER MANUAL |
EMB-BYT1000
4. I/O MAP
The Address Map of I/O Port in Main chipset
000H – 00FH
8237 DMA Controller
020H – 03FH
8259 Interrupt Controller
040H – 05FH
8254 Timer
060H – 06FH
8042 K/B Controller
070H – 07FH
641828 RTC, NMI
080H – 09FH
DMA Page Register
0A0H – 0BFH
8259 Interrupt Controller 2
0C0H – 0DFH
8237 DMA Controller 2
0F0H
Co-processor Clear
0F1H
Co-processor Reset
0F8H – 0FFH
Co-processor (Math. coprocessor)
The address map of I/O Port in Main Board
1F0H – 1F7H
HDD
200H – 207H
USER reserved
278H – 27FH
USER reserved
2B0H – 2F7H
USER reserved
2F8H – 2FFH
Serial port 2, COM2
300H –377H
USER reserved
378H – 37FH
LPT Port 1
380H – 3AFH
USER reserved
3B0H – 3BFH
USER reserved
3C0H – 3CFH
EGA
3D0H – 3DFH
CGA
3F0H – 3F7H
FDD
3F8H – 3FFH
Serial Port 1, COM1
