diff options
Diffstat (limited to 'vgasrc/swcursor.c')
| -rw-r--r-- | vgasrc/swcursor.c | 37 |
1 files changed, 33 insertions, 4 deletions
diff --git a/vgasrc/swcursor.c b/vgasrc/swcursor.c index 35f857af..83f48226 100644 --- a/vgasrc/swcursor.c +++ b/vgasrc/swcursor.c @@ -5,6 +5,7 @@ // This file may be distributed under the terms of the GNU LGPLv3 license. #include "biosvar.h" // GET_BDA +#include "bregs.h" // struct bregs #include "vgabios.h" // handle_gfx_op // Draw/undraw a cursor on the framebuffer by xor'ing the cursor cell @@ -32,11 +33,9 @@ gfx_set_swcursor(struct vgamode_s *vmode_g, int enable, struct cursorpos cp) } // Draw/undraw a cursor on the screen -void -vgafb_set_swcursor(int enable) +static void +set_swcursor(int enable) { - if (!vga_emulate_text()) - return; u8 flags = GET_BDA_EXT(flags); if (!!(flags & BF_SWCURSOR) == enable) // Already in requested mode. @@ -63,3 +62,33 @@ vgafb_set_swcursor(int enable) attr = (attr >> 4) | (attr << 4); SET_FARVAR(GET_GLOBAL(vmode_g->sstart), *(u8*)dest_far, attr); } + +// Disable virtual cursor if a vgabios call accesses the framebuffer +void +swcursor_pre_handle10(struct bregs *regs) +{ + if (!vga_emulate_text()) + return; + switch (regs->ah) { + case 0x4f: + if (!CONFIG_VGA_VBE || regs->al != 0x02) + break; + // NO BREAK + case 0x00 ... 0x02: + case 0x05 ... 0x0e: + case 0x13: + set_swcursor(0); + break; + default: + break; + } +} + +// Called by periodic (18.2hz) timer +void +swcursor_check_event(void) +{ + if (!vga_emulate_text()) + return; + set_swcursor(GET_BDA(timer_counter) % 18 < 9); +} |