diff options
Diffstat (limited to 'hw/sm501.c')
| -rw-r--r-- | hw/sm501.c | 11 |
1 files changed, 4 insertions, 7 deletions
diff --git a/hw/sm501.c b/hw/sm501.c index 09c5894cf9..94c0abf4cb 100644 --- a/hw/sm501.c +++ b/hw/sm501.c @@ -1323,15 +1323,12 @@ static void sm501_draw_crt(SM501State * s) for (y = 0; y < height; y++) { int update_hwc = draw_hwc_line ? within_hwc_y_range(s, y, 1) : 0; int update = full_update || update_hwc; - ram_addr_t page0 = offset & TARGET_PAGE_MASK; - ram_addr_t page1 = (offset + width * src_bpp - 1) & TARGET_PAGE_MASK; - ram_addr_t page; + ram_addr_t page0 = offset; + ram_addr_t page1 = offset + width * src_bpp - 1; /* check dirty flags for each line */ - for (page = page0; page <= page1; page += TARGET_PAGE_SIZE) - if (memory_region_get_dirty(&s->local_mem_region, page, - DIRTY_MEMORY_VGA)) - update = 1; + update = memory_region_get_dirty(&s->local_mem_region, page0, page1, + DIRTY_MEMORY_VGA); /* draw line and change status */ if (update) { |