From: Philipp Hortmann > Sent: 16 April 2022 09:01 > > Replace macro VNSvInPortB with ioread8. Avoid cast of the return > value is possible with one exception. Unless the hardware might be using PCI io space (which I doubt) shouldn't it be using readb() not ioread8() ? David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)