System Resources; Isa Bus Interrupt (Irq) Assignments; Direct Memory Access (Dma) Channels; Input/Output (I/O) Addresses - Intergraph StudioZ RenderRAX III System Setup

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System Resources

The following sections list the available system resources. See the vendor documentation
delivered with an expansion card or a peripheral device for instructions on how to use these
resources.

ISA Bus Interrupt (IRQ) Assignments

IRQ Assignment
0 Reserved (timer/counter)
1 Reserved (keyboard controller)
2 Reserved (interrupt controller)
3 Serial ports COM 2/COM 4
4 Serial ports COM 1/COM 3
5 Sound card or parallel port LPT 2
6 Reserved (floppy drive controller)
7 Parallel port LPT 1

Direct Memory Access (DMA) Channels

DMA Channel
0
1
2
3
4
5
6
7

Input/Output (I/O) Addresses

I/O Address (hex)
0000–000F
0020 0021
0040–0043
0048–004B
Data Width Assignment
8b or 16b Open
8b or 16b Second choice of ECP parallel port
8b or 16b Floppy drive controller
8b or 16b First choice of ECP parallel port
NA DMA controller to cascade channel
16b Open
16b Open
16b Open
Size Assignment
16 bytes DMA controller 1
2 bytes Interrupt controller 1
4 bytes Timer/counter 1
4 bytes Timer/counter 2
IRQ Assignment
8 Reserved (real-time clock)
9 USB or Windows sound
10 LAN
11 SCSI
12 PS/2 mouse
13 Reserved (math coprocessor)
14 Primary IDE
15 Secondary IDE