Installation Guide
AD1200 Reference
set the DIP switches according to Figure 2-7.
The PC AD1200 board can reside at any address on an 8
byte boundary within the range 0200H-03F8H, giving the 64
possible combinations.
The AD1210/11 and AD1220/21 boards occupy 16 bytes of
i/o address space and can be set to reside at one of 48 base
addresses within the range 0100H-03F0H. The DIP switches 1-7
control the PC AD1200 card i/o base address select, DIP switch
1-7 correspond to the A3-A9 address lines, respectively. DIP 8
does not have any effect and is a "don’t care" switch, for
compatibility with future versions of the AD1200 card leave DIP
8 off.
Only those addresses in the range 0100 - 03FF hex, in Figure 2-
7 below, are available for use since addresses in the range 0000-
00FF hex are reserved for system mother board devices such are
DMA circuitry, keyboard i/o etc.
The best address range for the AD1200 card is in the 0200
hex -023F hex & 0280 hex - 02BF hex ranges which are usually
unused.
A list of i/o addresses to be avoided, depending on what options
are installed in the PC, is given in Figure 2-5.
Figure 2-4a. AD1200 Factory Set DIP Switches.
_________________________________________
DIP 1-6 I/O Address select
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³ý³ý³ý³ý³ý³
å
on
ÚÄÄÄÄÄÄ¿
³ææåååå³
æ
off
³
123456
³
ÀÄÄÄÄÄÄÙ
PC AD1200 Factory Set Default Address= 0218 Hex, 536 Decimal
using 8 bytes of i/o space 0218-021F hex
Chapter 2
Page 27
