Doc. No. 1512-1-HAA-1003-1-2.0
Rev. 1.0 (Released)
November 8, 1997
Copyright (C) Odin TeleSystems Inc., 1997
8(15)
Balder-8S 2.0 Installation Guide
Configuring Balder-8S
The footnotes for Table 2 describe some commonly used PC hardware and their corre-
sponding I/O port addresses.
Do not use any of these I/O ports for Balder-8S if
you have any of this hardware installed.
Note that this list is not complete—your
particular PC manufacturer may have used other I/O ports than those mentioned here.
Also, note that different boards use different number of I/O address following the base
address. The I/O addresses above only indicate the start address of a range of
addresses used (e.g. the Balder-8S board uses 32 bytes following the I/O base
address). Make sure there are no overlaps or erratic operation may result.
5.5 Setting IRQ
Every PC board requires an IRQ number.
The Balder-8S cannot share IRQs with
any other hardware installed in the PC.
However, if more than one Balder-8S
board is installed in one PC, these boards must share an IRQ number.
The IRQ is set with jumper JP1. The possible IRQs for Balder-8S are listed in Table
3.:
1. 02001H:
Game control adapter
2. 0278H-02F7H:
Second printer port (LPT2)
3. 02F8H-02FFH:
Second serial port (COM2)
4. 0378H-037FH: First serial port (COM1)
5. 03B0H-03B7H: Monochrome and printer adapter
6. 03D0H-03DFH: Color/Graphics adapter
7. 03F0H-03F7H:
Floppy disk drive adapter card
03f8H-03FFH:
Serial port adapter card.
03E0H
Off
Off
Off
Off
Off
Not recommended
7
TABLE 3. IRQs supported by Balder-8S.
IRQ
Comment
3
Normally used by COM2 (if installed)
4
Normally used by COM1 (if installed)
5
Normally used by LPT2 (if installed)
6
Normally used by the diskette controller (if installed)
7
Normally used by LPT1 (if installed)
9 (2)
Normally free. Sometimes used by LAN adapters (if installed)
10
Normally free. Balder-8S factory default
11
Normally free
12
Normally free
TABLE 2. IO base address settings.
IO Base
Address
S5
S4
S3
S2
S1
Comment
