/*
  RTSDTR.C

For test functions:
(1) SetDtrInactive();
(2) SetDtrActive();
(3) SetRtsInactive();
(4) SetRtsActive();

  DTR bit: bit 0 of MCR
  RTS bit: bit 1 of MCR

  DTR pin of COM1 (pin 4)
  RTS pin of COM1 (pin 7)

  when 7188 is reset or set to Inactive mode:
    DTR and RTS bits is reset to 0
    /DTR and /RTS pin of 16C550 is reset to 5V
    DTR(4) and RTS(7) pin of COM1 is reset to about -8V

  When set to Active mode:
    DTR and RTS bits is reset to 1
    /DTR and /RTS pin of 16C550 is reset to 0V
    DTR(4) and RTS(7) pin of COM1 is reset to about +8V
*/

#include<stdio.h>
#include<dos.h>
#include"..\lib\7188.h"

main()
{ int data;

 data=inp(0x204);
 printf("data=%x Current DTR bit is %s\n\r",data&3,data&1 ? "High":"Low");
 SetDtrInactive();
 printf("Current DTR(pin 4) is Inactive(=-8V)\n\r");
 data=inp(0x204);
 printf("data=%x Current DTR bit is %s\n\r",data&3,data&1 ? "High":"Low");
 getch4();
 SetDtrActive();
 printf("Current DTR(pin 4) is Active(=+8V)\n\r");
 data=inp(0x204);
 printf("data=%x Current DTR bit is %s\n\r",data&3,data&1 ? "High":"Low");
 getch4();
 SetDtrInactive();
 printf("Current DTR(pin 4) is Inactive(=-8V)\n\r");
 data=inp(0x204);
 printf("data=%x Current DTR bit is %s\n\r",data&3,data&1 ? "High":"Low");

 getch4();
 SetRtsInactive();
 printf("Current RTS(pin 7) is Inactive(=-8V)\n\r");
 data=inp(0x204);
 printf("data=%x Current RTS bit is %s\n\r",data&3,data&2 ? "High":"Low");
 getch4();
 SetRtsActive();
 printf("Current RTS(pin 7) is Active(=+8V)\n\r");
 data=inp(0x204);
 printf("data=%x Current RTS bit is %s\n\r",data&3,data&2 ? "High":"Low");
 getch4();
 SetRtsInactive();
 printf("Current RTS(pin 7) is Inactive(=-8V)\n\r");
 data=inp(0x204);
 printf("data=%x Current RTS bit is %s\n\r",data&3,data&2 ? "High":"Low");
}