Ampro Corporation LITTLE BOARD 5001451A - Manual (Page 62)

2-44
Most Ampro MiniModule products have stackthrough connectors compatible with the PC/104
specification. You can stack several modules on the Little Board P6d headers. Each additional
module increases the thickness of the package by 0.66 inches (15 mm). Thus, a 3-module system
fits within the outline of the Little Board and within a 2.4-inch vertical space.
Figure 2-6 shows an example of how PC/104 modules stack on the Little Board P6d module.
Figure 2-6. Stacking PC/104 Modules on the Little Board P6d Module
Using Standard PC and AT Bus Cards
Ampro offers several options that allow you to add conventional 8-bit and 16-bit ISA expansion
cards to the Little Board P6d system. Contact Ampro for further information about optional bus
expansion products.
Expansion Bus Connector Pinouts
Table 2-43 and Table 2-44 show the pinout and signal functions on the ISA portion. Table 2-45
shows the PCI portion of the PC/104-Plus expansion bus connectors. These include J1, J2, and J3.
The expansion bus pin numbers for J1 and J2 correspond to the scheme normally used on ISA
expansion bus card sockets. Rather than numerical designations (1, 2, 3) they have alpha-numeric
designations (A1, A2…, B1, B2…, etc.). Similarly, the rows of J3 are designated A, B, C, and D.
The Little Board P6d system does not generate ±12VDC, 3.3V, or -5VDC for the expansion bus. If
devices on the bus require these voltages, -12V and -5V can be supplied to the bus connector from
the Utility 1 connector (J19). +12V can be supplied through J10-4. If a PCI peripheral board
requires 3.3V, you can attach this voltage to J10-5.
4-40 nuts
PC/104 Module
PC/104 Module Plus
Little Board P6d
Stackthrough
Expansion
Bus Headers
0.6 inch spacers
PCI Stackthrough
Headers
4-40 screws