COMe-bSL6 – User Guide Rev. 1.4
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Address Range (hex)
Size
Project Usage
FFFC0000-FFFFFFFF
256 KB
Mapping space for BIOS ROM/Boot vector
100000000-17FFFFFFF
2 GB
System memory (High DRAM)
180000000-F00000000
58 GB
High MMIO
4.3.
I/O Address Map
The I/O port addresses of the COMe-bSL6 are functionally identical to a standard PC/AT. All addresses not mentioned
in this table should be available. We recommend that you do not use I/O addresses below 0100h with additional
hardware for compatibility reasons, even if the I/O address is available.
Designated I/O Port Addresss
I/O Address Range
General Usage
Project Usage
000-00F
DMA-Controller (Master) (8237)
DMA-Controller (Master) (8237)
020-021
024-025
028-029
02C-02D
030-031
034-035
038-039
03C-03D
Interrupt-Controller (Master) (8259)
Interrupt-Controller (Master) (8259)
02E-02F
SuperIO (Winbond)
External SuperIO (Winbond)
040-043
050-053
Programmable Interrupt Timer (8253)
Programmable Interrupt Timer (8253)
04E-04F
2
nd
SuperIO, TPM etc.
TPM
060, 064
KBD Interface-Controller (8042)
KBD Interface-Controller (8042)
061, 063
065, 067
NMI Controller
NMI Controller
062, 066
Embedded Microcontroller
Not used
070-071
RTC CMOS / NMI mask
RTC CMOS / NMI mask
072-073
RTC Extended CMOS
RTC Extended CMOS
080-083
Debug port
Debug port
0A0-0A1
0A4-0A5
0A8-0A9
0AC-0AD
0B0-0B1
0B4-0B5
0B8-0B9
0BC-0BD
Interrupt-Controller (Slave) (8259)
Interrupt-Controller (Slave) (8259)
0B2-0B3
APM control
APM control
0C0-0DF
DMA-Controller (Slave) (8237)(N/A)
Not used
0F0-0FF
FPU (N/A)
Not used
170-177
HDD-Controller IDE1 Master
Not used
1F0-1F7
HDD-Controller IDE0 Master
Not used