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* moved the loading of X and Y coordinates to the beginning of the asm block in PutPixelX

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git-svn-id: trunk@41037 -
This commit is contained in:
nickysn 2019-01-24 15:27:05 +00:00
parent d04f801ee2
commit a55ee3b687
1 changed files with 3 additions and 3 deletions
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6
packages/graph/src/msdos/graph.pp
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@ -2627,8 +2627,9 @@ const CrtAddress: word = 0;
push dx push dx
push es push es
push di push di
mov di,[Y] ; (* DI = Y coordinate *) mov ax, [X]
add di,[StartYViewPort] mov di, [Y] ; (* DI = Y coordinate *)
add di, [StartYViewPort]
(* Multiply by 80 start *) (* Multiply by 80 start *)
mov cl, 4 mov cl, 4
shl di, cl shl di, cl
@ -2637,7 +2638,6 @@ const CrtAddress: word = 0;
shl di, 1 shl di, 1
add di, bx ; (* Multiply Value by 80 *) add di, bx ; (* Multiply Value by 80 *)
(* End multiply by 80 *) (* End multiply by 80 *)
mov ax, [X]
add ax, [StartXViewPort] add ax, [StartXViewPort]
mov cx, ax mov cx, ax
{DI = Y * LINESIZE, BX = X, coordinates admissible} {DI = Y * LINESIZE, BX = X, coordinates admissible}