readChar method
void
readChar()
Implementation
void readChar() async {
//Debugger.verbose('${pcHex(-1)} [read_char]');
Z.inInterrupt = true;
Z.printBuffer();
var operands = visitOperandsVar(4, true);
if (operands.length == 3) {
Debugger.todo('read_char time & routine operands');
}
var resultTo = readb();
final char = await Z.sendIO({"command": ioCommands.readChar});
writeVariable(resultTo, ZSCII.charToZChar(char));
Z.inInterrupt = false;
Z.callAsync(Z.runIt);
}