IPC/RSL8xxx-XxxxE: user documentation
DOC/IPC_RSL8-E; V1.9
© Syslogic Datentechnik AG, Switzerland, http://www.syslogic.com
21
/
80
3.2.2.
General I/O Layout and Configuration
The RSL8
’s 64 kbyte I/O address space is mapped to the PC/104 bus address space as
indicated in the table below. Note that 16 bit address decoding should be used on all PC/104
expansion boards to make efficient use of the I/O address space.
Address
Device / Register
Remarks
0000..001FH
DMA Controller 1
0020..0021H
Master Interrupt Controller
0022H
Configuration Address Register
0023H
Configuration Data Register
0024..003FH
reserved
0040..0043H
Timer/Counter
0044..005FH
reserved
0060H
Keyboard/Mouse Controller
0061H
Port B Register
0062..0063H
reserved
0064H
Keyboard/Mouse Controller
0065..006FH
reserved
0070H
Bit 6..0 = RealTimeClock/CMOS-RAM Address Register
Bit 7 = Non Maskable Interrupt (NMI) Mask (write only)
0071H
RealTimeClock/CMOS-RAM Data Register
0072..007FH
reserved
0080..0091H
DMA Page Registers / reserved
0092H
Port 92h System Control Register
0093..009FH
reserved
00A0..00A1H
Slave Interrupt Controller
00A2..00BFH
reserved
00C0..00DFH
DMA Controller 2
00E0..010FH
reserved
0110..016FH
reserved
0170..0177H
Secondary IDE Channel
0178..01EFH
reserved
01F0..01F7H
Primary IDE Channel
01F8..01FFH
reserved
0200..026FH
not used
0278..027FH
reserved for Parallel Port (LPT2) and Plug'n Play
0280..02E7H
reserved
02E8..02EFH
Serial Port (COM4)
02F0..02F7H
reserved
02F8..02FFH
Serial Port (COM2)
0300..036FH
not used
0370..0377H
reserved for external Secondary Floppy Controller
0376..0377H
reserved for external Secondary IDE Channel
0378..037FH
Parallel Port (LPT1)
