============================================================================= AST RESEARCH, INC. TECHNICAL BULLETIN #0764 07-17-92 ============================================================================= AST POWER PREMIUM SYSTEMS AND HARDWARE CURSOR IMPLEMENTATION PROBLEM: When using the AST Power Premium with Windows 3.X running in 32K color video modes, such as 640x480x32K, the mouse cursor will blink when placed over areas of the Windows desktop that are being redrawn. CAUSE: The Western Digital 90C31 VGA controller is not specifically designed to utilize the hardware cursor in 32K (16 bit) color modes. This limitation is not a problem with the Western Digital controller, but is caused by the lack of a color palette in 32K color mode. In addition, mouse cursor width and color availability would be adversely affected. AFFECTED SYSTEMS: AST Power Premium systems. SOLUTION: Due to the limitations outlined above, a hardware cursor is not implemented in 32K color mode.