Module Name: src
Committed By: macallan
Date: Wed Sep 4 10:45:50 UTC 2024
Modified Files:
src/sys/dev/ic: stireg.h
Log Message:
more annotations:
- 'transfer data' is actually a pixel mask
- transparency
- bg colour register confirmed
all found by experiment
To generate a diff of this commit:
cvs rdiff -u -r1.13 -r1.14 src/sys/dev/ic/stireg.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/stireg.h
diff -u src/sys/dev/ic/stireg.h:1.13 src/sys/dev/ic/stireg.h:1.14
--- src/sys/dev/ic/stireg.h:1.13 Mon Aug 19 10:57:32 2024
+++ src/sys/dev/ic/stireg.h Wed Sep 4 10:45:50 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: stireg.h,v 1.13 2024/08/19 10:57:32 macallan Exp $ */
+/* $NetBSD: stireg.h,v 1.14 2024/09/04 10:45:50 macallan Exp $ */
/* $OpenBSD: stireg.h,v 1.14 2015/04/05 23:25:57 miod Exp $ */
@@ -650,6 +650,8 @@ STI_DEP(util);
(((R)<<8)|((M)<<16)|((X)<<24)|((S)<<29)|((D)<<28)|((L)<<31)|((B)<<1)|(F))
/* LSSD XXXX MMMM MMMM RRRR RRRR ???? ??BF */
+/* B = 1 -> background transparency for masked fills */
+
#define IndexedDcd 0 /* Pixel data is indexed (pseudo) color */
#define FractDcd 1 /* Pixel data is Fractional 8-8-8 */
#define Otc04 2 /* Pixels in each longword transfer (4) */
@@ -687,7 +689,8 @@ STI_DEP(util);
#define NGLE_REG_6 0x000800 /* rectfill XY */
#define NGLE_REG_7 0x000804 /* bitblt size WH */
#define NGLE_REG_24 0x000808 /* bitblt src XY */
-#define NGLE_REG_8 0x000820 /* transfer data */
+#define NGLE_REG_8 0x000820 /* 'transfer data' - this is */
+ /* a pixel mask on fills */
#define NGLE_REG_37 0x000944 /* HCRX fast rect fill, size */
#define NGLE_REG_9 0x000a04 /* rect fill size, start */
#define NGLE_REG_25 0x000b00 /* bitblt dst XY, start */
@@ -695,8 +698,8 @@ STI_DEP(util);
#define NGLE_REG_10 0x018000 /* buffer ctl */
#define NGLE_REG_11 0x018004 /* dest bitmap access */
#define NGLE_REG_12 0x01800c /* control plane register */
-#define NGLE_REG_35 0x018010 /* fg color */
-#define NGLE_REG_36 0x018014 /* bg colour? */
+#define NGLE_REG_35 0x018010 /* fg colour */
+#define NGLE_REG_36 0x018014 /* bg colour */
#define NGLE_REG_13 0x018018 /* image planemask */
#define NGLE_REG_14 0x01801c /* raster op */
#define NGLE_REG_15 0x200000 /* 'busy dodger' idle */
