From: Maximilian Luz > Sent: 12 May 2021 22:05 > > The legacy PIC on the AMD variant of the Microsoft Surface Laptop 4 has > some problems on boot. For some reason it consistently does not respond > on the first try, requiring a couple more tries before it finally > responds. That seems very strange, something else must be going on that causes the grief. The 8259 will be built into to the one of the cpu support chips. I can't imagine that requires anything special. It's not as though you have a real 8259 - which even a 286 can break the inter-cycle recovery on (with the circuit from the application note). David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
