Measurement-computing CIO-DIO192 Instrukcja Użytkownika Pobierz pdf (Strona 9)

CIO-DIO192 User's Guide Installing the CIO-DIO192

Disregard the numbers printed on the switch

When setting the base address, refer to the numbers printed in white on the printed circuit board.

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 000-3F8. If you are not using IBM

prototyping cards or another board which occupies these addresses, 300-31Fh are also 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.

Wait state jumper

The CIO-DIO192 board has a wait state jumper which you can set to enable an on-board wait state generator. A

wait state is an extra delay injected into the processor's clock via the bus. This delay slows down the processor

when the processor addresses the CIO-DIO192 board, so that signals from slow devices (chips) are valid.

The jumper is shown in configured for OFF (wait state is disabled). Figure 2

Figure 2. Wait state jumper

WAIT

STATE

The wait state generator is only active when the CIO-DIO192 is being accessed. Your PC will not be slowed

down in general by using the wait state.

Because all PC expansion board buses are slowed to either 8 MHz or 10 MHz, the wait state generally is not

required. If you experience sporadic failures, try enabling the wait state generator.

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Measurement-computing CIO-DIO192 Instrukcja Użytkownika Strona 9