Module Name: src
Committed By: macallan
Date: Mon Aug 5 09:43:38 UTC 2024
Modified Files:
src/sys/dev/ic: stireg.h
Log Message:
describe more register functions
To generate a diff of this commit:
cvs rdiff -u -r1.10 -r1.11 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:1.10 src/sys/dev/ic/stireg.h:1.11
--- src/sys/dev/ic/stireg.h:1.10 Wed Jul 31 09:54:13 2024
+++ src/sys/dev/ic/stireg.h Mon Aug 5 09:43:37 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: stireg.h,v 1.10 2024/07/31 09:54:13 macallan Exp $ */
+/* $NetBSD: stireg.h,v 1.11 2024/08/05 09:43:37 macallan Exp $ */
/* $OpenBSD: stireg.h,v 1.14 2015/04/05 23:25:57 miod Exp $ */
@@ -672,11 +672,11 @@ STI_DEP(util);
#define MaskOtc 0 /* Mask contains Object Count valid bits */
#define NGLE_REG_1 0x000118 /* Artist LUT blt ctrl */
-#define NGLE_REG_28 0x000420
-#define NGLE_REG_2 0x000480 /* LUT blt src? */
-#define NGLE_REG_3 0x0004a0 /* palette index */
-#define NGLE_REG_22 0x0005a0
-#define NGLE_REG_23 0x0005c0
+#define NGLE_REG_28 0x000420 /* HCRX video bus access */
+#define NGLE_REG_2 0x000480 /* BINC src */
+#define NGLE_REG_3 0x0004a0 /* BINC dst */
+#define NGLE_REG_22 0x0005a0 /* BINC dst mask */
+#define NGLE_REG_23 0x0005c0 /* BINC data */
#define NGLE_REG_4 0x000600 /* palette data */
#define NGLE_REG_5 0x0006a0 /* cursor data */
#define NGLE_REG_6 0x000800 /* rectfill XY */
@@ -691,19 +691,20 @@ STI_DEP(util);
#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
+#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
+#define NGLE_REG_15 0x200000 /* 'busy dodger' idle */
+ #define DODGER_IDLE 0x1000 /* or 0x10000, likely tpyo */
#define NGLE_REG_15b0 0x200000 /* busy register */
#define NGLE_REG_16 0x200004
-#define NGLE_REG_16b1 0x200005
-#define NGLE_REG_16b3 0x200007
+#define NGLE_REG_16b1 0x200005 /* setup copyarea */
+#define NGLE_REG_16b3 0x200007 /* ROM table index on CRX */
#define NGLE_REG_34 0x200008 /* # of fifo slots */
#define NGLE_REG_17 0x200100 /* cursor coordinates */
#define NGLE_REG_18 0x200104 /* cursor enable */
#define NGLE_REG_26 0x200118 /* EG LUT blt ctrl */
-#define NGLE_REG_19 0x200200
+#define NGLE_REG_19 0x200200 /* artist sprite size */
#define NGLE_REG_20 0x200208 /* cursor geometry */
#define NGLE_REG_21 0x200218 /* Artist misc video */
#define NGLE_REG_27 0x200308 /* Artist misc ctrl */
@@ -722,11 +723,11 @@ STI_DEP(util);
#define LBC_TYPE_OVERLAY 0xc000
#define LBC_LENGTH_SHIFT 0
#define NGLE_REG_41 0x210024
-#define NGLE_REG_42 0x210028
-#define NGLE_REG_43 0x21002c
-#define NGLE_REG_44 0x210030
-#define NGLE_REG_45 0x210034
-#define NGLE_REG_32 0x21003c
+#define NGLE_REG_42 0x210028 /* these seem to control */
+#define NGLE_REG_43 0x21002c /* how the 24bit planes */
+#define NGLE_REG_44 0x210030 /* are displayed on HCRX - */
+#define NGLE_REG_45 0x210034 /* no info on bits */
+#define NGLE_REG_32 0x21003c /* HCRX plane enable */
#define NGLE_REG_33 0x210040 /* HCRX misc video */
#define HCRX_VIDEO_ENABLE 0x0A000000
#define NGLE_REG_39 0x210120 /* HCRX 'hyperbowl' mode 2 */
