Date: Sat, 4 Jul 1998 14:54:25 +0200 (CEST) From: Nick Hibma <nick.hibma@jrc.it> To: FreeBSD hackers mailing list <hackers@FreeBSD.ORG> Cc: sos@FreeBSD.ORG, Nick Hibma <nick.hibma@jrc.it> Subject: character type mouse Message-ID: <Pine.BSF.3.95q.980704142458.265A-200000@heidi>
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Here are the diffs for the CHARACTER_MOUSE. They are done on 2.2.1. I'll
send you better ones as soon as I get my hands on the 3.0 and 2.2.5
machines at work, Soren.
The effect of 10-20% interrupt time, was indeed related to that one
occurrence of waiting for the retrace. The CPU utilisation stays at zero
now. There is still one of the busy waiting loops in there with the
destructive cursor. Dunno if that is anything important/often called
though.
The code as it is could be improved upon probably by more thoroughly
checking whether the mouse pointer has moved at all, but I didn't bother
as it most probably only clutters the code with ifdef's with not
noticably improving efficiency.
The Netherlands will win, 2-1, mark my words.
Cheers,
A Dutchman in Italy.
P.S.: The coloring scheme:
const int col_conv[16] =
{6,6,6,6,2,2,2,6,14,14,14,14,10,10,10,14};
if ( crtc_addr == COLOR_BASE )
color = (col_conv[(cur_val&0xf000)>>12]<<12)
| (cur_val&0x0f00|0x0800); /* Set bold attr */
else
/* black & white: reverse colors (XXX untested) */
color = ((cur_val&0xf000)>>4) | ((cur_val&0x0f00)<<4);
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