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sm501: fix screen redraw

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Due to signed/unsigned comparison, the dirty bits are never reset, and
the screen redrawn each time. Fix that by only using ram_addr_t types,
and looking for page_min != addr_max instead.

Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
This commit is contained in:
Aurelien Jarno 2011-01-21 17:56:32 +01:00
parent b646968336
commit 543c4c94cf
1 changed files with 4 additions and 3 deletions
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7
hw/sm501.c
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@ -1274,8 +1274,8 @@ static void sm501_draw_crt(SM501State * s)
draw_hwc_line_func * draw_hwc_line = NULL;
int full_update = 0;
int y_start = -1;
int page_min = 0x7fffffff;
int page_max = -1;
ram_addr_t page_min = ~0l;
ram_addr_t page_max = 0l;
ram_addr_t offset = s->local_mem_offset;
/* choose draw_line function */
@ -1371,10 +1371,11 @@ static void sm501_draw_crt(SM501State * s)
dpy_update(s->ds, 0, y_start, width, y - y_start);
/* clear dirty flags */
if (page_max != -1)
if (page_min != ~0l) {
cpu_physical_memory_reset_dirty(page_min, page_max + TARGET_PAGE_SIZE,
VGA_DIRTY_FLAG);
}
}
static void sm501_update_display(void *opaque)
{