AMETEK SLD Series - Manual (Page 83)

Sorensen SLD-Series DC Load Appendix B
M540075-01 Rev C B-5
break;
case 0:
break;
case 2:
break;
case 4:
/* read character from data register */
ch1 = inportb(ACE_DATA_REG);
temp_index = input_index + 1;
/* increment index of input buffer*/
if (ch1 != '\n') /* check terminate bit */
{
queue[input_index] = ch1; /* store character to input buffer*/
input_index = temp_index;
}
else
{
queue[input_index] = ch1;
input_index = temp_index;
input_index = 0;
/* if terminate bit was detected */
temp_index = 0;
rd_result = 1;
/* clear index and set return value */
}
break;
}
/* finally send the non-spacific */
}while ((rd_result == 0) && (timeout == 0));
}
int pd_init(int pd_com)
{
if ((pd_com != 1) && (pd_com != 2))
return(OPER_ERR);
if (pd_com == 2)
/* initial communication port 2 */
{
ACE_DATA_REG = 0x2f8;
ACE_INT_ENB_REG = 0x2f9;
ACE_INT_IDENT_REG = 0x2fa;
ACE_LINE_CTL_REG = 0x2fb;
ACE_MODEM_CTL_REG = 0x2fc;
ACE_LINE_STAT_REG = 0x2fd;
ACE_MODEM_STAT_REG = 0x2fe;
COM_INT_NUM = 11;
IRQ_MASK = 0xf7; /* IRQ mask for IRQ3 (11110111) */
}
else
/* initial communication port 1 */
{
ACE_DATA_REG = 0x3f8;
ACE_INT_ENB_REG = 0x3f9;