diff options
| author | Kevin O'Connor <kevin@koconnor.net> | 2016-07-04 12:27:38 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2016-07-04 12:27:38 -0400 |
| commit | b303687deb4b56a9c187d74ec1869326683da464 (patch) | |
| tree | 2ab4805781ca2c00d4d73f34baa86613993f0239 /vgasrc | |
| parent | e5839eaffcf6ebba9d81f46a385280f7829f15d5 (diff) | |
| download | seabios-b303687deb4b56a9c187d74ec1869326683da464.tar.gz | |
vgabios: Don't check for special case of page==0xff on external calls
The original "lgpl vgabios" internally used page=0xff as a mechanism
for specifying the current page. It also would allow int1013 calls to
externally specify bh==0xff for the current page. However, there is
no documentation supporting this as an externally available feature.
SeaVGABIOS does not need the internal shortcut; this patch removes the
code.
Signed-off-by: Kevin O'Connor <kevin@koconnor.net>
Diffstat (limited to 'vgasrc')
| -rw-r--r-- | vgasrc/vgabios.c | 14 | ||||
| -rw-r--r-- | vgasrc/vgafb.c | 2 |
2 files changed, 5 insertions, 11 deletions
diff --git a/vgasrc/vgabios.c b/vgasrc/vgabios.c index 8b501921..2593e037 100644 --- a/vgasrc/vgabios.c +++ b/vgasrc/vgabios.c @@ -109,16 +109,10 @@ set_cursor_pos(struct cursorpos cp) struct cursorpos get_cursor_pos(u8 page) { - if (page == 0xff) - // special case - use current page - page = GET_BDA(video_page); - if (page > 7) { - struct cursorpos cp = { 0, 0, 0xfe }; - return cp; - } + if (page > 7) + return (struct cursorpos) { 0, 0, 0 }; u16 xy = GET_BDA(cursor_pos[page]); - struct cursorpos cp = {xy, xy>>8, page}; - return cp; + return (struct cursorpos) { xy, xy>>8, page }; } static void @@ -555,7 +549,7 @@ handle_100e(struct bregs *regs) // Ralf Brown Interrupt list is WRONG on bh(page) // We do output only on the current page ! struct carattr ca = {regs->al, regs->bl, 0}; - struct cursorpos cp = get_cursor_pos(0xff); + struct cursorpos cp = get_cursor_pos(GET_BDA(video_page)); write_teletype(&cp, ca); set_cursor_pos(cp); } diff --git a/vgasrc/vgafb.c b/vgasrc/vgafb.c index 5d1ecc93..58c60ad5 100644 --- a/vgasrc/vgafb.c +++ b/vgasrc/vgafb.c @@ -674,7 +674,7 @@ vgafb_set_swcursor(int enable) struct vgamode_s *vmode_g = get_current_mode(); if (!vmode_g) return; - struct cursorpos cp = get_cursor_pos(0xff); + struct cursorpos cp = get_cursor_pos(GET_BDA(video_page)); if (cp.x >= GET_BDA(video_cols) || cp.y > GET_BDA(video_rows) || GET_BDA(cursor_type) >= 0x2000) // Cursor not visible |