dantoni@decnet.enet.dec.com (Gaitan Dantoni) (03/06/91)
I'm having a problem programming my mouse on a Tandy 1000 TX when using
Tandy Mode Graphics (Video Mode 9). When I display the graphics cursor,
using standard "INT 33h" function calls, I get two partial cursor
images, each one missing every other row of pixels. Both images move
together as I move the mouse. It appears that if the two images were
overlaid I would get the proper cursor image. If I switch to some other
graphics mode, such as mode 5, everything works fine.
I believe the mouse can be used in mode 9 because I have a Tandy paint
program that, I think, uses the mouse in this mode. Any suggestions?
Gaitan D'Antoni
Digital Equipment Corporationekalenda@cup.portal.com (Edward John Kalenda) (03/06/91)
Gaitan D'Antoni writes: > I'm having a problem programming my mouse on a Tandy 1000 TX when using > Tandy Mode Graphics (Video Mode 9). When I display the graphics cursor, > using standard "INT 33h" function calls, I get two partial cursor > images, each one missing every other row of pixels. Both images move > together as I move the mouse. It appears that if the two images were > overlaid I would get the proper cursor image. If I switch to some other > graphics mode, such as mode 5, everything works fine. > > I believe the mouse can be used in mode 9 because I have a Tandy paint > program that, I think, uses the mouse in this mode. Any suggestions? Mode 9 and on up are not supported by most mouse drivers on the Tandy. The mouse driver thinks it has a PCjr video card which does not quite match up to the Tandy. When I did a graphics program which used the mouse, I had to do my own display functions for the mouse cursor. I think that most paint programs don't bother using the mouse cursor display support and do it themselves. Ed ekalenda@cup.portal.com