Measurement-computing CIO-DIO24/CTR3 Manual de usuario descargar pdf (Pagina 10)

CIO-DIO24/CTR3 User's Guide Installing the CIO-DIO24/CTR3

PC I/O Address Summary

Hex Range Function Hex Range Function

000-00F 8237 DMA #1 2C0-2CF EGA

020-021 8259 PIC #1 2D0-2DF EGA

040-043 8253 TIMER 2E0-2E7 GPIB (AT)

060-063 8255 PPI (XT) 2E8-2EF SERIAL PORT

060-064 8742 CONTROLLER (AT) 2F8-2FF SERIAL PORT

070-071 CMOS RAM & NMI MASK (AT) 300-30F PROTOTYPE CARD

080-08F DMA PAGE REGISTERS 310-31F PROTOTYPE CARD

0A0-0A1 8259 PIC #2 (AT) 320-32F HARD DISK (XT)

0A0-0AF NMI MASK (XT) 378-37F PARALLEL PRINTER

0C0-0DF 8237 #2 (AT) 380-38F SDLC

0F0-0FF 80287 NUMERIC CO-P (AT) 3A0-3AF SDLC

1F0-1FF HARD DISK (AT) 3B0-3BB MDA

200-20F GAME CONTROL 3BC-3BF PARALLEL PRINTER

210-21F EXPANSION UNIT (XT) 3C0-3CF EGA

238-23B BUS MOUSE 3D0-3DF CGA

23C-23F ALT BUS MOUSE 3E8-3EF SERIAL PORT

270-27F PARALLEL PRINTER 3F0-3F7 FLOPPY DISK

2B0-2BF EGA 3F8-3FF SERIAL PORT

You can set the base address switch to any address in the range of 000-3FC. If you are not using IBM

prototyping cards or another board which occupies these addresses, the CIO-DIO24/CTR3 board's default

address of 300h is free to use.

Addresses not specifically listed, such as 390-39Fh, are not reserved and may be available. Check your

computer for other boards which may use I/O addresses.

Interrupt level

The trigger logic on the CIO-DIO24/CTR3 is quite simple. Pin 1 (IR Input) of the board's 37-pin connector is

an input jumper which maps the interrupt directly onto the PC bus. The signal to the bus is buffered. The buffer

is enabled by a LOW level on Pin 2,

IR Enable.

Interrupts are hardware-initiated software routines. Most hardware interrupts are assigned by the computer and

are reserved for internal system use. Refer to the following table for some typical interrupt assignments on a

computer.

The CIO-DIO24/CTR3 is shipped with the jumper in the "

X" position, which means that no interrupt level is set

( ). Leave the jumper in the default "X" position for now. If your software employs interrupt service

routines, it will direct you to select an IRQ level. Use the jumper block labeled

IR above the PC bus interface

(gold pins) if you want to set the interrupt.

Figure 3

Figure 3. Interrupt level select jumper (no interrupt level set)

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 20 21

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Measurement-computing CIO-DIO24/CTR3 Manual de usuario Pagina 10