Module Name: src
Committed By: macallan
Date: Mon Dec 16 09:39:03 UTC 2024
Modified Files:
src/sys/dev/ic: summitreg.h
Log Message:
the cursor sprite and colour map registers live in the same address range,
0x80xxxx and 0x40xxxx are aliases, no idea what the diffrence is.
Rearrange register definitions and explain what's going on
To generate a diff of this commit:
cvs rdiff -u -r1.7 -r1.8 src/sys/dev/ic/summitreg.h
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/dev/ic/summitreg.h
diff -u src/sys/dev/ic/summitreg.h:1.7 src/sys/dev/ic/summitreg.h:1.8
--- src/sys/dev/ic/summitreg.h:1.7 Thu Dec 5 12:37:16 2024
+++ src/sys/dev/ic/summitreg.h Mon Dec 16 09:39:03 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: summitreg.h,v 1.7 2024/12/05 12:37:16 macallan Exp $ */
+/* $NetBSD: summitreg.h,v 1.8 2024/12/16 09:39:03 macallan Exp $ */
/*
* Copyright (c) 2024 Michael Lorenz
@@ -95,14 +95,20 @@
* 0x400 or 0x100 by themselves don't start a command either
*/
-#define VISFX_COLOR_MASK 0x800018
-#define VISFX_COLOR_INDEX 0x800020
-#define VISFX_COLOR_VALUE 0x800024
+/*
+ * The 0x80xxxx and 0x40xxxx ranges are aliased to each other, no idea what
+ * the differences are, so for now just use 40xxxx for both palette and cursor
+ * sprite access.
+ * The _POS, _INDEX and _DATA registers work exactly like on HCRX
+ */
#define VISFX_CURSOR_POS 0x400000
+#define VISFX_CURSOR_ENABLE 0x80000000
#define VISFX_CURSOR_INDEX 0x400004
#define VISFX_CURSOR_DATA 0x400008
#define VISFX_CURSOR_COLOR 0x400010
-#define VISFX_CURSOR_ENABLE 0x80000000
+#define VISFX_COLOR_MASK 0x400018
+#define VISFX_COLOR_INDEX 0x400020
+#define VISFX_COLOR_VALUE 0x400024
#endif /* SUMMITREG_H */
