Update KFloppyA.HH

I completed the flag definitions for the ST2 and ST3 registers, and
updated the copyright notice accordingly. I also broke some long
comments down into multiple lines to keep the line length to 80 columns
or less.

1 files changed, 42 insertions, 9 deletions

diff --git a/KFloppyA.HH b/KFloppyA.HH
index 29bb7e3..6eb4321 100644
--- a/KFloppyA.HH
+++ b/KFloppyA.HH
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2025 Harley Travis <yoshi128k@gmail.com>.
+    Copyright (C) 2026 Harley Travis <yoshi128k@gmail.com>.
     This work is free. You can redistribute it and/or modify it under the
     terms of the Do What The Fuck You Want To Public License, Version 2,
     as published by Sam Hocevar. See the Copying.TXT file for more details.
@@ -60,7 +60,8 @@
 
 // other DOR flags
 #define FDC_DOR_DMA	0x08 // DMA2/IRQ6 On/Off
-#define FDC_DOR_REST	0x04 // Controller Reset: this is active low; 1 = normal, 0 = reset
+#define FDC_DOR_REST	0x04 // Controller Reset: this is active low;
+			//	1 = normal, 0 = reset
 
 // DOR drive select (DOR & 0x03): selects drive 0-3
 
@@ -86,20 +87,52 @@
 */
 
 #define FDC_ST0_SEEK_END	0x20 // Seek End: seek/calibration completed
-#define FDC_ST0_UNIT_CHK	0x10 // Unit Check: drive encountered a fault or recalibration failed
+#define FDC_ST0_UNIT_CHK	0x10 // Unit Check: drive encountered a fault
+				//	or recalibration failed
 #define FDC_ST0_NOT_RDY		0x08 // Not Ready: self-explanatory
 #define FDC_ST0_HEAD		0x04 // Active Head
 
 // ST0 unit select (ST0 & 0x03): same fmt as DOR drive select
 
 // Status Register 1 (ST1) flags
-#define FDC_ST1_END_CYL		0x80 // End of Cylinder: set when sector count > sectors on track
+#define FDC_ST1_END_CYL		0x80 // End of Cylinder:
+				//	set when sector count > sectors on track
 // 0x40 is unused
-#define FDC_ST1_DATA_ERR	0x20 // Data Error: set when an error is detected in a sector's data or ID fields
-#define FDC_ST1_TIMEOUT		0x10 // Timeout: set when a data overrun occurs (i.e. the system is not reading data fast enough)
+#define FDC_ST1_DATA_ERR	0x20 // Data Error: set when an error is
+				//	detected in a sector's data or ID fields
+#define FDC_ST1_TIMEOUT		0x10 // Timeout: set when a data overrun or
+				//	underrun occurs (i.e. the system is not
+				//	reading data fast enough)
 // 0x08 is unused
-#define FDC_ST1_NO_DATA		0x04 // No Data: set when either a sector cannot be read, or an ID cannot be successfully read, or if the sector sequence cannot be determined
-#define FDC_ST1_NO_WRITE	0x02 // Not Writable: set when attempting to write to a write-protected disk
-#define FDC_ST1_NO_ID		0x01 // No Addr. Mark: set when an ID/(deleted) data address mark cannot be found.
+#define FDC_ST1_NO_DATA		0x04 // No Data: set when either a sector cannot
+				//	be read, or an ID cannot be successfully
+				//	read, or if the sector sequence cannot
+				//	be determined
+#define FDC_ST1_NO_WRITE	0x02 // Not Writable: set when attempting to
+				//	write to a write-protected disk
+#define FDC_ST1_NO_ID		0x01 // No Addr. Mark: set when an ID/(deleted)
+				//	data address mark cannot be found.
 
 // Status Register 2 (ST2) flags
+// 0x80 is unused
+#define FDC_ST2_DEL_ADDR_MRK	0x40 // Deleted Addr. Mark: set when a deleted
+				//	DAM or valid DAM is detected during RS
+				//	or RDS, respectively
+#define FDC_ST2_CRC_ERR		0x20 // CRC Error: self explanatory
+#define FDC_ST2_WRONG_CYL	0x10 // Wrong cyl.: set when the ctrlr cyl does
+				//	not match that in the ID addr mrk
+// 0x08 and 0x04 are unused
+#define FDC_ST2_BAD_CYL		0x02 // Bad Cylinder: set when track addr in
+				//	sector does not match that on the ctrlr
+				//	and equals 0xFF (meaning it is bad)
+#define FDC_ST2_MISSING_DATA	0x01 // Missing Data: set when no DAM or DDAM
+				//	can be found
+
+// Status Register 3 (ST3) flags
+// 0x80 is unused
+#define FDC_ST3_W_PROT		0x40 // Write Protected: self explanatory
+// 0x20 is unused
+#define FDC_ST3_TRK_0		0x10 // Track 0: ditto
+// 0x08 is unused
+#define FDC_ST3_HEAD_ADDR	0x04 // Head Address: ditto
+// 0x02 and 0x01 are drive select