110 Port Addresses - Xycom XVME-678 Manual

XVME-678/688 Manual
July 1994
4.6 110 PORT ADDRESSES
The XVME-678/688 110 map contains all IBM PC/AT architecture 110 ports, plus ten 110 ports at 110
address spaces 30H-34H 36H, and 3CH-3FH. Standard PC/AT 110 addresses are shown in Table 4-1
below. The additional 8-bit 110 ports are listed in Table 4-2 on the next page.
Table 4-1. 110 Address Map
Hex Range Port
000-01F DMA Controller 1, 8237 A-5 Equivalent
020-021 Interrupt Controller 1, 8259 Equivalent
022-023 Chips & Technology Register Set-up
024-02F
Interrupt Controller 1, 8259 Equivalent
030-03F VMEbus Interface Control and Status Registers
040-05F Timer, 8254-2 Equivalent
060-06F
8742 Equivalent (Keyboard)
070-07F Real Time Clock bit 7 NMI Mask
080-09F DMA Page Resistor
OAO-OBF Interrupt Controller 2, 8259 Equivalent
OCO-ODF DMA Controller 2, 8237 A-5 Equivalent
OEO-OEF Available
OFO
Clear Math Co-processor Interrupt 13
OF1
N/A
OF2-0FF
Math Co-processor
100-lEF Available
1FO-1F7
IDE
Controller (AT drive)
1F8-277 Available
278-27F Parallel Port 2 (see note)
280-2F7
Available
2F8-2FF Serial Port 2 (see note)
300-36F
Available
370-377
Alternate Floppy Disk Controller (see note)
378-37F
Parallel Port 1 (see note)
380-3BF Available
3CO-3CF VGA/EGA
3DO-3EF
Available
3FO-3F7
Primary Floppy Disk Controller
3F8-3FF Serial Port 1 (see note)
NOTE
Because serial and parallel port addresses can be changed and disabled, they
may not be used for all applications. The XVME-678/688 is shipped with
serial ports 1 and 2 and parallel port 1 enabled at the address specified.
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