Measurement-computing Personal488 rev.3.0 For DOS & Windows 3.Xi Uživatelský manuál stáhnout pdf (Strana 120)

II. SOFTWARE GUIDES - 8. Driver488/DRV 8L. Language-Specific Information

Personal488 User’s Manual, Rev. 3.0 II-105

Aztec C

Use of Character Command Language

In order to simplify programming Driver488/DRV with C, the following files are provided on the

Driver488/DRV program disk:

•

IEEEIO.C

: Communications routines for Driver488/DRV

•

IEEEIO.H

: Header file, contains declarations from

IEEEIO.C

•

CRITERR.C

: Critical error handler routines (included with Aztec C, only)

•

CRITERR.H

: Header file, contains declarations for using

CRITERR

The actual demonstration program is contained in

195DEMO.C

. All files for Aztec C are in the

\AZTECC

directory.

To execute the demonstration program, the files must be compiled and then linked. The following

DOS commands perform these steps:

C> cc 195demo

C> cc ieeeio

C> ln 195demo ieeeio -lm -lc

Finally, the demonstration program is run by typing

195demo <Enter>

. Note that the critical error

handler (

CRITERR.C

) is not required for the demonstration program.

CRITERR.C (for Aztec C)

Normally, when Driver488/DRV detects an error, perhaps due to a syntax error in a command, or due

to an IEEE 488 bus error (such as time out on data transfer), it responds with an I/O error to DOS.

When this happens, DOS normally issues an

ABORT

RETRY

IGNORE

message and waits for a

response from the keyboard. There is no way for the user’s program to detect such an error, determine

8L. Language-Specific Information

Topics

•

Aztec C............................................................................................ II-104

Use of Character Command Language.....................................................II-104

CRITERR.C (for Aztec C) ............................................................................II-104

•

GW-BASIC (for GW-BASIC or Interpreted BASIC).............. II-105

Use of Direct DOS I/O Devices....................................................................II-105

BASIC VARPTR & SADDR .........................................................................II-105

GET & PUT (for GW-BASIC only)..............................................................II-105

•

JPI TopSpeed Modula-2.............................................................. II-106

Use of Direct DOS I/O Devices....................................................................II-106

•

Logitech Modula-2........................................................................ II-106

Use of Direct DOS I/O Devices....................................................................II-106

•

True Basic...................................................................................... II-107

Use of Character Command Language.....................................................II-107

IEEEIO.TRU..................................................................................................II-107

TOOLKIT.LIB................................................................................................II-107

•

Turbo Basic.................................................................................... II-107

Use of Character Command Language.....................................................II-107

1 2 ... 115 116 117 118 119 120 121 122 123 124 125 ... 399 400

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