13 May
2021
13 May
'21
8:10 a.m.
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
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