}
void
-stdvga_set_active_page(u16 address)
-{
- u16 crtc_addr = stdvga_get_crtc();
- stdvga_crtc_write(crtc_addr, 0x0c, address >> 8);
- stdvga_crtc_write(crtc_addr, 0x0d, address);
-}
-
-void
-stdvga_set_cursor_pos(u16 address)
+stdvga_set_cursor_pos(int address)
{
u16 crtc_addr = stdvga_get_crtc();
+ address /= 2; // Assume we're in text mode.
stdvga_crtc_write(crtc_addr, 0x0e, address >> 8);
stdvga_crtc_write(crtc_addr, 0x0f, address);
}
return 0;
}
+int
+stdvga_get_displaystart(struct vgamode_s *vmode_g)
+{
+ u16 crtc_addr = stdvga_get_crtc();
+ int addr = (stdvga_crtc_read(crtc_addr, 0x0c) << 8
+ | stdvga_crtc_read(crtc_addr, 0x0d));
+ return addr * stdvga_bpp_factor(vmode_g);
+}
+
+int
+stdvga_set_displaystart(struct vgamode_s *vmode_g, int val)
+{
+ u16 crtc_addr = stdvga_get_crtc();
+ val /= stdvga_bpp_factor(vmode_g);
+ stdvga_crtc_write(crtc_addr, 0x0c, val >> 8);
+ stdvga_crtc_write(crtc_addr, 0x0d, val);
+ return 0;
+}
+
/****************************************************************
* Save/Restore/Set state