sdcc/support/regression/ports/mcs51-common/support.c

   1 /* define UART sfr only */
   2 __sbit __at(0x98+1) TI;
   3 __sfr  __at(0x99) SBUF;
   4
   5 /* assume P1 for bankswitching address lines */
   6 __sfr __at(0x90) PSBANK;
   7
   8 unsigned char
   9 __sdcc_external_startup (void) __nonbanked
  10 {
  11   /* serial port mode 0 is default */
  12   /* enable transmission of first byte */
  13   TI = 1;
  14   return 0;
  15 }
  16
  17 void
  18 _putchar (char c)
  19 {
  20   (* (volatile char __xdata *) 0x7654)= 'p';
  21   (* (volatile char __xdata *) 0x7654)= c;
  22   return;
  23   while (!TI)
  24     ;
  25   TI = 0;
  26   SBUF = c;
  27 }
  28
  29 void
  30 _initEmu (void)
  31 {
  32 }
  33
  34 void
  35 _exitEmu (void)
  36 {
  37   //while (!TI) /* wait for the last character to be transmitted */
  38   //  ;         /* before hitting the breakpoint */
  39   * (char __idata *) 0 = * (char __xdata *) 0x7654;
  40   (* (volatile char __xdata *) 0x7654)= 's';
  41 }