The following C function printint prints the integer in the accumulator.  It doesn't work (due to overflow) if it happens to be the most negative integer.  The contents of the accumulator are lost.

void printint(void)
{ int weight = 1;
  if (AC<0) {putchar('-'); AC = -AC;}
  while (AC/weight >= 10) weight *= 10;
  while(1)
  { putchar(AC/weight+'0');
    if(weight==1) return;
    AC %= weight; weight /= 10;
  }
}

Here's a translation of printint to assembly language.

pitoprint: W 1
piweight: I 1
picharminus: C'-'
pichar0: I 48
pimask: H 80000000
piC0: I 0
piC1: I 1
piC10: I 10
printint: W 1
   STA pitoprint
   AND pimask
   BZE piwhile1
   LDA picharminus
   OUT opsys
   LDA piC0
   SUB pitoprint
   STA pitoprint
piwhile1: LDA pitoprint
   DIV piweight
   SUB piC10
   AND pimask
   BZE pibody1
   BUN piwhile2
pibody1: LDA piweight
   MUL piC10
   STA piweight
   BUN piwhile1
piwhile2: LDA pitoprint
   DIV piweight
   ADD pichar0
   OUT opsys
   LDA piweight
   XOR piC1
   BZE pireturn
   LDA pitoprint
   MOD piweight
   STA pitoprint
   LDA piweight
   DIV piC10
   STA piweight
   BUN piwhile2
pireturn: BIN printint