Colin Leroy-Mira 89af42e5cb Serial: Optimize SER_IRQ ...

Apple2 and Atmos have Index in X, but can still use it for the
best-case path as long as we reload it in the worst-case part
(when we assert flow control).
Also, standardize the free space to trigger flow control to 32
characters left (compare with RecvFreeCnt before decrement)

2023-09-07 07:13:54 +02:00

..

a2.ssc.s

Serial: Optimize SER_IRQ

2023-09-07 07:13:54 +02:00