claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

C&T 69000 changes of the day (June 1st, 2025)

Browse Source 
Divide by 3 the destination address on color patterns to make sure the pattern position is perfectly aligned. Fixes color patterns in Win3.1x and Win9x (and possibly NT-based and other stuff).
This commit is contained in:
TC1995
2025-06-01 13:21:36 +02:00
parent 683501545c
commit 07341003dc
1 changed files with 4 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
src/video/vid_chips_69000.c
View File

@@ -1268,15 +1268,15 @@ chips_69000_process_pixel(chips_69000_t* chips, uint32_t pixel)
if (chips->bitblt_running.bytes_per_pixel == 3) {
pattern_pixel = chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr
+ (4 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (3 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)), chips);
+ (3 * ((((chips->bitblt_running.bitblt.destination_addr / 3) & 7) + chips->bitblt_running.x) & 7)), chips);
pattern_pixel |= chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr
+ (4 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (3 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)) + 1, chips) << 8;
+ (3 * ((((chips->bitblt_running.bitblt.destination_addr / 3) & 7) + chips->bitblt_running.x) & 7)) + 1, chips) << 8;
pattern_pixel |= chips_69000_readb_linear(chips->bitblt_running.bitblt.pat_addr
+ (4 * 8 * ((vert_pat_alignment + chips->bitblt_running.y) & 7))
+ (3 * (((chips->bitblt_running.bitblt.destination_addr & 7) + chips->bitblt_running.x) & 7)) + 2, chips) << 16;
+ (3 * ((((chips->bitblt_running.bitblt.destination_addr / 3) & 7) + chips->bitblt_running.x) & 7)) + 2, chips) << 16;
}
}
if (chips->bitblt_running.bytes_per_pixel == 2) {
@@ -2785,7 +2785,7 @@ chips_69000_disable_handlers(chips_69000_t *chips)
mem_mapping_disable(&chips->svga.mapping);
if (!chips->on_board)
mem_mapping_disable(&chips->bios_rom.mapping);
chips->linear_mapping.base = 0;
/* Save all the mappings and the timers because they are part of linked lists. */