VEX-6254
Vortex
86EX
CPU Module
16
01F0h - 01F7h
IDE0 (IRQ 14)
Yes
02E8h - 02EFh
COM4 (IRQ 11)
Yes
02F8h - 02FFh
COM2 (IRQ 3)
Yes
0376h
IDE1 ATAPI device control write only register
Yes
0378h - 037Fh
Printer port (IRQ 7
,
DMA 0)
03E8h - 03EFh
COM3 (IRQ 10)
Yes
03F0h - 03F7h
Floppy Disk (IRQ 6
,
DMA 2)
03F6h
IDE0 ATAPI device control write only register
Yes
03F8h - 03FFh
COM1 (IRQ 4)
Yes
0480h - 048Fh
DMA High page register
Yes
0490h - 0499h
Instruction counter register
Yes
04D0h - 04D1h
8259 Edge / level control register
Yes
0CF8h - 0CFFh
PCI configuration port
Yes
1000h - 10FFh
on board LAN
Yes
FC00h - FC05h
SPI Flash BIOS control register
Yes
FC08h - FC0Dh
External SPI BUS control register ( output pin
configurable GPIO3[0-3] )
Yes
IRQ Mapping
IRQ#
Description
Usage
IRQ0
System Timer
Yes
IRQ1
Keyboard Controller
Yes
IRQ2
Cascade for IRQ8 - 15
Yes
IRQ3
Serial Port 2
Yes