5
Rev A
INSTALLATION
Before installing the MBS-GPS-SS2-5HZ GPS Module, refer to Figure 1 for the location of various
connectors and jumpers.
Interrupt Select Jumpers, JP3 & JP 4:
JP3 is used to select the IRQ Level for the DATA port. IRQ's 3, 4, 5, 6, 7, 9, 10, 11, 12, 14 and 15
are supported. Simply select the desired IRQ level by moving the jumper to the appropriate
position.
Default configuration for JP3 is IRQ4 which is standard for COM1. Default configuration for JP4
is IRQ3 which is standard for COM 2.
Each port must use a unique IRQ
.
Caution:
Improper IRQ configuration can result in your CPU locking up due to an IRQ conflict. Most COM
libraries allow for non-standard IRQ settings as will after market drivers. Windows 95, 98, ME,
NT, 2000 and XP may limit your IRQ selection without aftermarket drivers. This is usually not
required unless all IRQ’s supported by the OS are already allocated.
Address Select Jumpers, JP1 & JP2:
For flexibility with most SW and Development libraries this unit will support any valid address
between 0x000-0x007 and 0x7F8-0x7FF. However, most platforms have limited IO space.
Please refer to your host CPU IO Map for available IO space for this product.
Most applications will use one of the common serial port addresses. The most common are:
COM1 = 3F8, IRQ4, COM2 = 2F8, IRQ3 COM3 = 3E8, IRQ4 COM4 = 2E8, IRQ3
Most software development libraries for serial communication support non-standard address
and/or IRQ assignments.
An excellent serial communication is the Comm/Drv Lib from Willies Computer Software at
http://www.wcscnet.com
. This company provides excellent serial communications products and
is recommended by MicroBee Systems.
The default address of this interface is 0x3F8 & 0x2F8 which are COM1 & COM 2 respectively.
To easily select the address you desire place jumpers on JP2 in the following order.
From left to right placing a jumper sets the address bit to 0.
Addressing Examples:
Hex A10 A9 A8 A7 A6 A5 A4 A3
0x2F8
X
X
0x300
X X X X X X
0x310
X X X X X
0x3E8
X
X
0x3F8
X
0x7F8
X = jumper installed meaning bit = 0.