Changeset 334 in xtideuniversalbios for trunk/Serial_Server

Timestamp:

Mar 13, 2012, 5:29:34 AM (13 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Serial server DPT flag optimization, remove Serial/IDE specific header on drive scan results, added GNU GPL v2 banner at boot.

File:

• trunk/Serial_Server/library/Image.cpp (modified) (3 diffs)

trunk/Serial_Server/library/Image.cpp

@@ -205 +205 @@
 //
 #define ATA_wSerialServerVersion 157
-#define ATA_wSerialFloppyFlagAndType 158
+#define ATA_wSerialDriveFlags 158
 #define ATA_wSerialPortAndBaud 159
 
@@ -214 +214 @@
 #define ATA_wGenCfg_FIXED 0x40
 
-#define ATA_wSerialFloppyFlagAndType_Flag 0x10
-#define ATA_wSerialFloppyFlagAndType_TypePosition 5
+// These are all shifted by 1 bit to the right, so that SerialDPT_Finalize can shift them into proper position
+// and shift the high order bit into the carry flag to indicate a floppy drive is present.
+//
+#define ATA_wSerialDriveFlags_Floppy    0x88
+#define ATA_wSerialDriveFlags_Present   0x02
+#define ATA_wSerialDriveFlags_FloppyType_FieldPosition   4
 
 struct comPorts {
@@ -298 +302 @@
     buff[ ATA_wSerialServerVersion ] = (SERIAL_SERVER_MAJORVERSION << 8) | SERIAL_SERVER_MINORVERSION;
 
+    buff[ ATA_wSerialDriveFlags ] = ATA_wSerialDriveFlags_Present;
     if( floppy )
-        buff[ ATA_wSerialFloppyFlagAndType ] = 
-            ATA_wSerialFloppyFlagAndType_Flag | (floppyType << ATA_wSerialFloppyFlagAndType_TypePosition);
+        buff[ ATA_wSerialDriveFlags ] |= 
+            ATA_wSerialDriveFlags_Floppy | (floppyType << ATA_wSerialDriveFlags_FloppyType_FieldPosition);
 
     // we always set this, so that the bulk of the BIOS will consider this disk as a hard disk