Changeset 233 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc

Timestamp:

Feb 4, 2012, 6:21:22 PM (12 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Serial Port: split single byte port and baud into two bytes, taking advantage of the two bytes in DPT_SERIAL, which supports more serial baud rates and in particular fixed a bug where a 4x client machine couldn't talk to a 115.2K server machine. This is a wide change, touching lots of files, but most are shallow changes. DetectPrint.asm took the most significant changes, now it calculates the baud rate to display instead of using characters provided by the Configurator. The Configurator now has a new menu flag, FLG_MENUITEM_CHOICESTRINGS, for specifying that values are not linear and they should be lookedup rather than indexed. Finally, another important bug fixed here is that in some error cases, the serial port code could get into an infinite loop waiting ont the hardware; now it has a timeout.

File:

• trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc

@@ -28 +28 @@
     .dpt                        resb    DPT_size
 
-    ; Block size is specified in sectors (1, 2, 4, 8, 16, 32, 64 or 128)
+    ; Block size is specified in sectors (1, 2, 4, 8, 16, 32 or 64).
+    ; 128 is not allowed to prevent offset overflow during data transfer.
     .wSetAndMaxBlock:
     .bSetBlock                  resb    1   ; Current block size (at least 1)
@@ -39 +40 @@
     .dpt                        resb    DPT_size
 
-    .bSerialPortAndBaud         resb    1   ; Packed I/O port and baud rate for serial drives
-                                resb    1   ; unused alignment
+    .wSerialPortAndBaud:
+    .bSerialPort                resb    1   ; Serial connection I/O port address, divided by 4
+    .bSerialBaud                resb    1   ; Serial connection baud rate divisor
 endstruc
 %endif