Unitech MR350 MKII Manual de usuario descargar pdf (Pagina 21)

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Chapter 3. I/O Function Calls

3. I/O Function Calls

The operating system of the MR350MKII supports BIOS/DOS Function to control

LCD display, Keyboard input, Proximity/Barcode/Magnetic stripe input, Buzzer,

Security alarm, Photo-coupler input, Relay output, and serial port input/output of

RS232 and RS485. The whole C sample program are gathered into library file

"350LIB.C" on Utility Diskette.

3.1. LCD Display INT 10H

00 Clear screen

Entry Parameters: AH = 0

Returned Values: None

void TL_clrscr()

{

regs.h.ah= 0;

int86(0x10,&regs,&regs);

}

01 Set cursor type

Entry Parameters: AH = 1

AL = 1 ;set Block cursor

0 ;set Underscore cursor

3 ;set cursor off

Returned Values: None

void TL_cursor_type(int status)

{

regs.h.ah = 1;

regs.h.al = (unsigned char)status;

int86(0x10,&regs,&regs);

}

02 Set cursor position

Entry Parameters: AH = 2

DH = 0 ~ 1 ;row

DL = 0 ~ 15 ;column

Returned Values: None

1 2 ... 16 17 18 19 20 21 22 23 24 25 26 ... 85 86

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Unitech MR350 MKII Manual de usuario Pagina 21