System Resources And Maps; Memory Map; I/O Map - VersaLogic Python EBX-11 Reference Manual

Memory Map

The lower 1 MB memory map of the EBX-11 is arranged as shown in the following table.
Various blocks of memory space between C0000h and FFFFFh can be shadowed. CMOS Setup
is used to enable or disable this feature.

I/O Map

The following table lists the common I/O devices in the EBX-11 I/O map. User I/O devices
should be added using care to avoid the devices already in the map as shown in the following
table.
Note The I/O ports occupied by on-board devices are freed up when the device is
disabled in the CMOS setup. This does not apply to SPI and Reserved registers.
EBX-11 Reference Manual

System Resources and Maps

Table 31: Memory Map
Start Address End Address
E0000h FFFFFh
DC000h DFFFFh
D0000h DBFFFh
C0000h CFFFFh
A0000h BFFFFh
00000h 9FFFFh
Table 32: I/O Map
I/O Device
Special Control Register
Product ID and Revision Register
Jumper and Status Register
Reserved
SPI Control and Data Registers
COM/ISA IRQ Routing
Primary Hard Drive Controller
COM4 Serial Port
LPT1 Parallel Port
COM3 Serial Port
COM2 Serial Port
COM1 Serial Port
Comment
System BIOS
Reserved
PC/104
Video BIOS
Video RAM
System RAM
Standard I/O
Addresses
1D0h
1D1h
1D2h
1D3h – 1D7h
1D8h – 1DDh
1DEh
1F0h – 1F7h
2E8h – 2EFh
378h – 37Fh
3E8h – 3EFh
2F8h – 2FFh
3F8h – 3FFh
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