CANpro/104 User Manual
Hardware Installation – Rev C & Later
The Connect Tech CANpro/104 board provides two (2) industry standard SJA1000 CAN Bus controllers in a PC/104 board format which supports both I/O and Memory mapping configurability.
All the configuration options are setup with jumpers, identified as J1, J2, J3A, J3B, J3C, J4 and J5. Jumpers are always oriented as indicated in the drawing below.
The jumper positions are numbered on the PCB (and are shown in the above drawing). J1 and J2 are Interrupt Selection jumpers, and the numbers (3, 4, 5, 6, 7, 9, 10, 11, 12, 14 and 15) refer to the actual interrupt number being selected. J3A, J3B and J3C positions are numbered sequentially from left to right. J3A and J3C have 6 positions, J3B has 7 positions. J4 and J5 positions are labeled “T” and “G”.
Memory vs I/O Spaces
The first decision to make when configuring this board, it to select whether the board will operate within the Memory or I/O address Space of the computer system in which the board is installed. First a quick description of the two different Spaces.
Memory Space
Most (but not all) PC/104 CPU System board vendors provide one or more regions of Memory Addresses that can be configured (or allocated) to the PC/104 Expansion bus connector(s) on CPU System board. This setup may be performed via the BIOS setup or via jumpers or switches on the System board. This memory region is usually located at addresses below the
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