Measurement-computing PPIO-DIO24H Manuel d'utilisateur télécharger pdf (Page 10)

4.2.2 Read Data Signals: (BASE + 1):

BIT SIGNAL DESCRIPTION COMMON NAME

0NA

1NA

2NA

15 3 READ DATA 0 OR 4 ERROR

13 4 READ DATA 1 OR 5 SLCT OUT

12 5 READ DATA 2 OR 6 PAPER OUT

10 6 PATH FOR INTERRUPT, IF USED ACK

11 7 READ DATA 3 OR 7 -BUSY

4.2.3 Write Data Signals: (BASE + 0):

BIT SIGNAL DESCRIPTION COMMON NAME

2 0 WRITE DATA OR ADDRESS D0

3 1 WRITE DATA OR ADDRESS D1

4 2 WRITE DATA OR ADDRESS D2

5 3 WRITE DATA OR ADDRESS D3

6 4 WRITE DATA OR ADDRESS D4

7 5 WRITE DATA OR ADDRESS D5

8 6 WRITE DATA OR ADDRESS D6

9 7 WRITE DATA OR ADDRESS D7

4.3 CONTROL & DATA REGISTERS

The PPIO-DIO24H has three data and one control register. They occupy four

consecutive I/O locations. Direct register manipulation is best done with ASSEMBLY

language programs.

The register descriptions follow the format:

A0A1A2A3A4A5A6A7

01234567

The numbers along the top row are the bit positions within the byte and the numbers

and symbols in the bottom row are the functions of each bit.

To write to or read from a register in decimal or HEX, the weights in Table 4-1 apply:

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 16

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Measurement-computing PPIO-DIO24H Manuel d'utilisateur Page 10