Figure 2-12 DCP386i Factory Default Jumper Connections
PC I/O Channel Check
The factory default setting (J1-2 to J1-3 connected) for the DCP386i provides an interrupt line to the PC for parity errors in the shared memory. This is the I/O Channel Check signal on the PC bus.
A parity error may instead interrupt the local processor at level 0 of the local 82C59. This can be done by placing the jumper in the LCL position (J1-1 to J1-2 connected). Refer to Figure 2-12 for the factory default jumper settings.
Window Group Select
The DCP386i contains memory that is shared by the host. The host software can select the size of the window that is shared using Jumper J3. The factory default setting (J3-1 to J3-2 connected) allows window sizes of 16K, 32K, 64K or 1M. Changing this jumper plug position (J3-2 to J3-3 connected), allows window sizes of 16K, 64K or 128K. Figure 2-13 shows the Window Group Select jumper settings.
Factory Default
Figure 2-13 Window Group Select Jumper Plug Settings
