25 Oct
1999
25 Oct
'99
5:07 a.m.
Chuck McManis <cmcmanis(a)mcmanis.com> wrote:
As an empirical note the 16450 UART often could not be serviced fast enough
by the 486DX66 to prevent it from dropping incoming characters above 9600
baud.
Hi
The problem with dropping characters was because of slow video
in scrolling the screen. I rewrote a scroll that did one
line at a time and then checked the UART. It was able to handle
text at 115.2K without any UART buffering at all. It did have a
software fifo for the input though. So, it can
be done, you just have to know the bottle neck.
Dwight