Unitech PT630, Programming Reference Manual

Page: 19 / 73

PT630 Programming Reference Guide Page 19 of 59
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1.5.12.4 Enable/Disable RS232 Port
Entry Parameter: AH = 1AH
BH = 4
AL = 0/1 ; disable/enable
Return Value: None
Example
:
void TD_serial(int status)
{
regs.h.ah= 0x1A;
regs.h.bh= 4;
regs.h.al= (unsigned char)status;
int86(0x21,&regs,&regs);
}
1.5.12.5 Enable/Disable Key or Key Function
Entry Parameter: AH = 1AH
BH = 5
AL = 0 ; All keys
1 ; Supervisor mode
2 ; Cold start
3 ; Warm start
4 ; User mode (press [CMD] for 2 seconds)
5 ; ALPHA key
BL = 0 ; Disable key or key function
1 ; Enable key or key function
Return Value: None
Example :
void TD_keylock(int type,int status)
{
regs.h.ah= 0x1A;
regs.h.bh= 5;
regs.h.al= (unsigned char)type;
regs.h.bl= (unsigned char)status;
int86(0x21,&regs,&regs);
}