Xycom XVME-653, Manual

Page: 58 / 113

XVME-653/658 Manual
4-2
I/O Map
Table 4-2 XVME-653/658 I/O Map
Address Range Device
000-01F DMA controller 1, 8237A-5 equivalent
020-021 Interrupt controller 1, 8259 equivalent
022-023 Available
025-02F Interrupt controller 1, 8259 equivalent*
040-05F Timer, 8254-2 equivalent
060-06F Keyboard, 8742 equivalent
070-07F Real-time clock, bit 7 NMI mask*
080-091 DMA page register*
93-9F DMA page register*
0A0-0BF Interrupt controller 2, 8259 equivalent*
0C0-0DF DMA controller 2, 8237A-5 equivalent*
0F0-0FF Numeric Data Processor
100 Available
101-1EF Available
1F0-1F7 IDE controller (AT drive)
1F8-217 Available
218 XA TEMP/ABORT port
219 XA LED/BIOS port
220-232 Available
233 XA Watchdog timer port
234 XA NVRAM and DiskOnChip port
280-2F7 Available
2F8-2FF Serial port 2**
378-37F Parallel port 1**
3E0-3EF Available
3F0-3F7 Primary floppy disk controller
3F8-3FF Serial port 1**
*Note
Reference the Intel HX PCI chip set data book for detailed information.
**Note
Serial and parallel port addresses are controlled in the BIOS Setup Menu
and they may be changed or disabled. Changing the setting will change
the I/O location. Therefore, these addresses may be used for some appli-
cations and not for others.