|Re: [hatari-devel] TT palette bankswitching should be supported|
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On 02/21/2016 07:26 AM, Roger Burrows wrote:
On 21 Feb 2016 at 1:00, Eero Tamminen wrote:
Ah, so this isn't about ST<->TT color palette mapping,
but about e.g. 16/4/2 color modes. Both TT and ST modes?
It applies when bank-switching is active, so should apply to ST low, ST medium,
and TT medium. I originally tested just TT medium, but I've now tested ST
medium & ST low and (as per the Atari documents), it applies to all 3.
Note that this does not apply to any other TT mode (ST high/duochrome, TT high,
Thanks for the testing!
Could you send the test program you mentioned?
Attached patch hopefully fixes that.
diff -r 6708d52e5e49 src/video.c
--- a/src/video.c Sun Feb 21 22:38:10 2016 +0200
+++ b/src/video.c Sun Feb 21 22:53:46 2016 +0200
@@ -3020,6 +3020,13 @@
Uint32 ttpalette = 0xff8400;
int i, colors = 1 << bpp;
+ if (colors <= 16)
+ /* palette bank switching */
+ int page = (IoMem_ReadWord(0xff8262) & 0x0f);
+ ttpalette += page * 16*SIZE_WORD;
for (i = 0; i < colors; i++)