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git-svn-id: trunk@41031 -
This commit is contained in:
nickysn 2019-01-24 13:52:00 +00:00
parent 9c3d65b08f
commit 8e832f31dc
1 changed files with 1 additions and 1 deletions
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packages/graph/src/msdos/graph.pp
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@ -2508,7 +2508,7 @@ const CrtAddress: word = 0;
mov cx, [X] mov cx, [X]
add cx, [StartXViewPort] add cx, [StartXViewPort]
mov ax, cx mov ax, cx
{SI = Y * LINESIZE, BX = X, coordinates admissible} {SI = Y * LINESIZE, CX = X, coordinates admissible}
shr ax, 1 ; (* Faster on 286/86 machines *) shr ax, 1 ; (* Faster on 286/86 machines *)
shr ax, 1 shr ax, 1
add si, ax ; {SI = Y * LINESIZE + (X SHR 2) } add si, ax ; {SI = Y * LINESIZE + (X SHR 2) }