Changes

The CPC [[Printer Port]] has only 7 bit data. Which is sufficient for english English 7 bit ASCII character sets, but not enough for 8 bit character sets. Also, printing bitmap graphics usually requires 8 bit data (though usually can also print 7 pixels columns combined with a reduced line-feed rate). Amstrad's DMP1 works perfectly with 7 bit, but Amstrad's later DMP2000/DMP2160 include a few functions that won't work on 7 bit ports - so even the official CPC printers aren't fully compatible with the CPC printer port. There's a software solution though, proposed by [[Amstrad Computer User]] using a replacement driver (only for printers accepting EPSON control codes).