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// Environment library

// Creates definitions of the special I/O ports used by the

// environment, as well as some utility functions to allow

// programs to print out strings in the test log.

#ifndef TV80_ENV_H

#define TV80_ENV_H

sfr at 0x80 sim_ctl_port;

sfr at 0x81 msg_port;

sfr at 0x82 timeout_port;

sfr at 0x83 max_timeout_low;

sfr at 0x84 max_timeout_high;

sfr at 0x90 intr_cntdwn;

#define SC_TEST_PASSED 0x01

#define SC_TEST_FAILED 0x02

#define SC_DUMPON      0x03

#define SC_DUMPOFF     0x04

void print (char *string)

{

  char *iter;

  timeout_port = 0x02;

  timeout_port = 0x01;

  iter = string;

  while (*iter != 0) {

    msg_port = *iter++;

  }

}

void print_num (int num)

{

  int cd = 0;

  int i;

  char digits[8];

  timeout_port = 0x02;

  timeout_port = 0x01;

  while (num > 0) {

    digits[cd++] = (num % 10) + '0';

    num /= 10;

  }

  for (i=cd; i>0; i--)

    msg_port = digits[i-1];

}

#define sim_ctl(code) sim_ctl_port = code

void set_timeout (unsigned int max_timeout)

{

  timeout_port = 0x02;

  max_timeout_low = (max_timeout & 0xFF);

  max_timeout_high = (max_timeout >> 8);

  timeout_port = 0x01;

}

#endif