Changeset 203 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Inc

Timestamp:

Nov 23, 2011, 8:42:19 PM (13 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

Reworked the 'skip detecting the slave if there was no master' code to be more complete (includes configurator drives) and to take into account int13h/25h calls. Some of the changes in my last checkin have been rolled back as a result (they are no longer needed). I did take a byte out of RAMVARS, but there was an alignment byte available for the taking. I also added a perl script for padding and adding the checksum byte to a binary image, which can be invoked manually or with 'make checksum'.

Location:

trunk/XTIDE_Universal_BIOS/Inc

Files:

• RamVars.inc (modified) (1 diff)
• RomVars.inc (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Inc/RamVars.inc

@@ -13 +13 @@
     .bHDSwap        resb    1   ; Hard Drive to swap to 80h and vice versa
     .bXlatedDrv     resb    1   ; Drive number after translation
-                    resb    1   ; For WORD alignment
+%ifdef MODULE_SERIAL
+    .bLastSerial    resb    1   ; Packed Port and Baud for last serial drive detected
+                                ; (using space of an alignment byte, 
+                                ; used during and after boot (int13/25h case))
+%else
+                    resb    1   ; alignment
+%endif
 endstruc
 

trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc

@@ -100 +100 @@
 ;   baud rate = b, where 00 = 2400, 01 = 9600, 10 = 38.4K, 11 = 115.2K
 ;
-; 240h/2400baud corresponds to 0 for a PackedPortAndBaud value, which is reserved (in case we need
-; it to know if a value has been set).  Which is why ..._MINPORT is 248h.
+; 240h/2400baud corresponds to 0 for a PackedPortAndBaud value, which triggers auto detect code.
+; Which means 240h is not usable, and is why ..._MINPORT is 248h.  A value is reserved at the upper
+; end of the spectrum in case it is needed (whcih is why it is 430h instead of 438h).
 ;
 DEVICE_SERIAL_PACKEDPORTANDBAUD_PORTMASK            EQU     0fch
@@ -107 +108 @@
 DEVICE_SERIAL_PACKEDPORTANDBAUD_PORT_FIELD_POSITION EQU     2
 DEVICE_SERIAL_PACKEDPORTANDBAUD_STARTINGPORT        EQU     240h
-DEVICE_SERIAL_PACKEDPORTANDBAUD_MINPORT             EQU     248h        ; minimum port value that the user can set
-DEVICE_SERIAL_PACKEDPORTANDBAUD_MAXPORT             EQU     438h        ; or (..._PORTMASK << 1) + ..._STARTINGPORT
+DEVICE_SERIAL_PACKEDPORTANDBAUD_MINPORT             EQU     248h    ; minimum port value that the user can set
+DEVICE_SERIAL_PACKEDPORTANDBAUD_MAXPORT             EQU     430h    ; or ((..._PORTMASK-1) << 1) + ..._STARTINGPORT
 
 DEVICE_SERIAL_PACKEDPORTANDBAUD_BAUDMASK            EQU     3h