diff options
| -rw-r--r-- | hw/sm501.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/hw/sm501.c b/hw/sm501.c index 388fc085be..0f0bf96609 100644 --- a/hw/sm501.c +++ b/hw/sm501.c @@ -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 */ @@ -1371,9 +1371,10 @@ 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) |