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Memory and I/O Map

EPM-4 Reference Manual Reference – 37

I/O MAP

The following table lists the common I/O devices in the EPM-4 I/O map. User I/O devices should

be added in the 104h – 3FFh range, using care to avoid the devices already in the map as shown

below.

Table 9: On-Board I/O Devices

I/O Device

Standard

I/O Addresses

See ÉlanSC520 register set manual 000h-0FFh

Special Control Register 0E0h

Revision Indicator Register 0E1h

Map and Paging Control Register 0E3h

Primary IDE Controller 1F0h – 1F6h

COM 4 Serial Port 2E8h – 2EFh

COM 2 Serial Port 2F8h – 2FFh

COM 3 Serial Port 3E8h – 3EFh

Floppy Disk Controller 3F0h – 3F7h

COM1 Serial Port 3F8h – 3FFh

CBAR FFFCh-FFFFh

Note: I/O ports occupied by on-board devices are freed up when the device is disabled in

CMOS Setup.

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Lynx EPM-4 Manuel d'utilisateur Page 45