CompuServe Messages

The following is taken (w/o permission) from the Mouse Systems "PC Mouse Reference Manual. "If you expect your program to be used on the IBM Enhanced Graphics Adapter you should take the following into consideration. Every COLOR statement in a BASIC program generates a BIOS call to set the border color, even if you have not specified a new border color. The Enhanced Graphics Adapter runs for a considerable length of time with interrupts disabled when this call is made, causing MSMOUSE to miss mouse information. You may find behavior such as missed button clicks if COLOR statements are used in conjunction with mouse activity. The only solution that we are aware of is to write an assembly language routine which traps INT 10 and does not make the Set Palette BIOS call unless the border color needs to be changed." I have been asked to fix a BASIC program which has problems which appear to be caused by the use of COLOR statements and an EGA. Does anyone have, or know where to get, "an assembly language routine which traps INT 10 .."? Scrapping the EGA or BASIC are not options at this time. 🙂