Measurement Computing Personal488 rev.3.0 - Manual (Page 47)

Personal488 for Windows 95/98/Me/NT/2000 04-09-01 Hardware Configuration Reference 4-7
GP488B Configurations
In te rrup t
L ev el 5 D M A
C h an ne l 1
J 3 J 4
O n -b o ard
8 M H z C lo ck
J 5
J3 J4
J5
S W 1
IE E E 4 88
C onn ec tor
8-B it O ne C a rd E dg e
B a se A dd res s
0 2E 1
In te rrup t
L ev el 5
G P 4 8 8 B In ter fa c e B o a rd G P 4 8 8 B D e fa u lt S ettin g s
N o W a it
S tate s
S W 1
6
7
8
5
2 3
OP
E
N
14
6
7
8
5
2
3
OP
E N
14
The I/O base address, IRQ, and DMA settings are switch/jumper selectable via the following locations
on the GP488B interface board: One 8-microswitch DIP switch labelled SW1, two 12-pin headers
labelled J3 and J4, and one 3-pin header labelled J5. The DIP switch settings, and the arrangement of
the jumpers on the headers set the hardware configuration.
For the next steps, make sure that the I/O address, IRQ, and DMA, set on the interface board are
different from any existing ports in your system. A conflict results when two I/O addresses, IRQs, or
DMAs are the same. (As the exception, additional GP488B interfaces may share the same IRQ and
DMA values). If there is a conflict, reconfigure the switch/jumper settings. Refer to the following
figures as needed.
Selected I/O Base
Address
02E1 22E1 42E1 62E1
Register
Automatic Offset Addresses Read Register Write Register
02E1 22E1 42E1 62E1 Data In Data Out
06E1 26E1 46E1 66E1 Interrupt Status 1 Interrupt Mask 1
0AE1 2AE1 4AE1 6AE1 Interrupt Status 2 Interrupt Mask 2
0EE1 2EE1 4EE1 6EE1 Serial Poll Status Serial Poll Mode
12E1 32E1 52E1 72E1 Address Status Address Mode
16E1 36E1 56E1 76E1 CMD Pass Through Auxiliary Mode
1AE1 3AE1 5AE1 7AE1 Address 0 Address 0/1
1EE1 3EE1 5EE1 7EE1 Address 1 End of String