From: Andreas Schwab Date: Mon, 24 Mar 97 10:46:57 +0100 To: linux-m68k@phil.uni-sb.de In-Reply-To: (message from Geert Uytterhoeven on Mon, 10 Mar 1997 10:06:27 +0100 (MET)) Subject: Re: L68K: Experimental console speedup X-Yow: Is a tattoo real, like a curb or a battleship? Or are we suffering in Safeway? Sender: owner-linux-m68k@phil.uni-sb.de Reply-To: linux-m68k@phil.uni-sb.de Geert Uytterhoeven writes: |> This experimental patch speeds up scrolling of parts of the screen. There's a bug in the scroll down case, the conditions were mixed up. Gives some kind of VI feeling in Emacs :-) Btw, why do you use p->dispsw->bmove with SCROLL_YMOVE, but fbcon_bmove otherwise? Andreas. --- linux/arch/m68k/console/fbcon.c.~3~ Thu Mar 13 21:02:16 1997 +++ linux/arch/m68k/console/fbcon.c Thu Mar 13 21:42:19 1997 @@ -1697,11 +1697,11 @@ switch (p->scrollmode) { case SCROLL_YWRAP: if (b-t-count > 3*conp->vc_rows>>2) { - if (t > 0) + if (conp->vc_rows-b > 0) fbcon_bmove(conp, b, 0, b-count, 0, conp->vc_rows-b, conp->vc_cols); ywrap_down(unit, p, count); - if (conp->vc_rows-b > 0) + if (t > 0) fbcon_bmove(conp, count, 0, 0, 0, t, conp->vc_cols); } else fbcon_bmove(conp, t, 0, t+count, 0, b-t-count, @@ -1711,11 +1711,11 @@ case SCROLL_YPAN: if (b-t-count > 3*conp->vc_rows>>2) { - if (t > 0) + if (conp->vc_rows-b > 0) fbcon_bmove(conp, b, 0, b-count, 0, conp->vc_rows-b, conp->vc_cols); ypan_down(unit, conp, p, count); - if (conp->vc_rows-b > 0) + if (t > 0) fbcon_bmove(conp, count, 0, 0, 0, t, conp->vc_cols); } else fbcon_bmove(conp, t, 0, t+count, 0, b-t-count,