QL 1000 Series
Chapter 6 - Jumper & Switch Settings

This chapter explains how to configure a QL 1000 Series board. The configurable options are:

       I/O Port Address
       DMA Channel
       Port (QL 1044 only)
       Interrupt Channel

The QL 1001 boards are factory-set for I/O port address 290 (hexadecimal), DMA Channel 3, and interrupt channel 15 (decimal). Each QL board in the network must have the same DMA Channel and interrupt settings, but a different I/O port address setting. Figure 6-1, Figure 6-2, and Figure 6-3 show the configuration jumpers and switches on each board.

Jumpers

To change the DMA channel or interrupt on a QL 1001 or QL 1002, you need to move a jumper from one set of pins to another. Figure 6-4 shows jumpers and pins on a jumper block.

DMA Channel

QL 1001 and QL 1002

Jumpers on blocks J1 and J2 control the DMA channel on QL 1001 and QL 1002 boards. The left half of each jumper block defines the read channel; the right half defines the write channel. Figure 6-5 shows DMA channel configurations. The default DMA setting is 3.

QL 1044

Switches S3 and S4 control the DMA channel on a QL 1044 board. The top three switches on each block define the write channel; the bottom three switches on each block define the read channel. Figure 6-6 shows DMA channel configurations. The default DMA setting is 3.

Interrupts

QL 1001 and QL 1002

Jumpers on block J3 control the interrupt. The bottom half of J3 defines the read interrupt; the top half defines the write interrupt. Figure 6-7 shows the interrupt settings. The default interrupt setting is 15.

QL 1044

DIP switch S5 controls the interrupt setting. Switches 1 through 4 define the write interrupt (IRQ); switches 5 through 8 define the read interrupt. Figure 6-8 shows the interrupt settings. The default interrupt setting is 15.

Port Selection - QL 1044 Only

The QL 1044 has four RJ-45 connectors. Switch positions on DIP Switch SW1 define the function of each connector. When a switch is OFF, the connector is configured as a terminal port. When a switch is ON, the connector is configured as a COM port.

Orient the QL 1044 board with the mounting bracket in your left hand and SW1 on top. A switch is OFF when its handle is away from the board (see Figure 6-9).

I/O Address

The QL 1001 uses two sequential I/O addresses. This means that a board with a base address of 290 (hexadecimal) also uses address 291. The default base I/O address is 290.

The QL 1002 uses four sequential I/O addresses. This means that a board with a base address of 290 (hexadecimal) also uses addresses 291, 292, and 293. The default base I/O address is 290.

The QL 1044 uses eight sequential I/O addresses. This means that a board with a base address of 290 (hexadecimal) also uses addresses 291 through 297. The default base I/O address is 290.

Switch positions on DIP switch SW1 (for QL 1001 and QL 1002) or S2 (for QL 1044) define the base address. Orient the board with the mounting bracket in your left hand and the DIP switch on top. A switch is OFF when its handle is away from the board.

Select a base address for the board, and set the switches to that address. For 32 users, set the first board to 290. For 100 users, set the first board to 120. Figure 6-10 shows initial switch settings for the QL 1001. Figure 6-11 shows initial switch settings for the QL 1002. Figure 6-12 shows initial switch settings for the QL 1044.

Table 6-1, Table 6-2A, Table 6-2B, and Table 6-2C show switch settings for all users.

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