Unitech PT630, Programming Reference Manual

Page: 71 / 73

PT630 Programming Reference Guide Page 71 of 59
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Chapter 3. Update Note
1. Correct error return value on BX on section 1.5.25 Get DOS and Firmware Version Number
Entry Parameter: AH = 30H
AL = 0/1 ; with/without OEM version code
Return Value: if AL = 0 when call:
AL= major DOS version number (=2)
AH= minor DOS version number (=10)
CL= major firmware version number
CH= minor firmware version number
BX= OEM firmware version code (=0 for standard version)
if AL = 1 when call:
AL= major DOS version number (=2)
AH= minor DOS version number (=10)
CL= major firmware version number
CH= minor firmware version number
BX= 8 3 0H
2. Correct error entry value on 1.2.1 Select Large Font
Entry Parameter: AH = 0 /1 ; select 8*16-dot character font (4 lines * 16
; columns display)
Return Value: None
void TL_font(int status)
{
regs.h.ah = (unsigned char)status;
int86(0x09,&regs,&regs);
}
3. Correct error entry value for DSR 1.8.7 Get CTS /DSR Signal Status of RS232 Port
Entry Parameter: AH = 6
AL = 2 1 ; get CTS
AL = 1 2 ; get DSR
Return Value: DH = 0 ; High voltage on signal
1 ; Low voltage on signal
Note: Only for NONE communication protocol
Example :
int TC_232_CTS()
{
regs.h.ah = 6;
regs.h.al = 2;
int86(0X33&regs,&regs);
return((int)regs.h.dh);
}
int TC_232_DSR()
{
regs.h.ah = 6;
regs.h.al = 1;
int86(0X33&regs,&regs);
return((int)regs.h.dh);
}