Reintegrate wbw -> trunk

Doc/ChangeLog.txt

@@ -10,6 +10,8 @@ Version 2.5
 - WBW: Fixed debug monitor (I, O, and H commands corrected)
 - WBW: Added support for SCSI2IDE (SD Card driver primarily)
 - WBW: Revised System Architecture document
+- WBW: Added support for Dual SD board (preliminary)
+- WBW: Overhaul of SD driver (sd.asm) to clean up the conditionals
 
 Version 2.1.1
 -------------

ReadMe.txt

@@ -8,8 +8,8 @@ Builders: Wayne Warthen (wwarthen@gmail.com)
           Douglas Goodall (douglas_goodall@mac.com)
           David Giles (vk5dg@internode.on.net)
 
-Updated: 2012-08-28
-Version: 2.1.1
+Updated: 2013-03-31
+Version: 2.5 Beta
 
 This is an adaptation of CP/M-80 2.2 and ZSDOS/ZCPR
 targeting ROMs for all N8VEM Z80 hardware variations

RomList.txt

@@ -67,6 +67,13 @@ DRI CP/M (BDOS & CCP)
     - PPISD support
     - Drives A:=ROM, B:=RAM, C:=SD0-00, D:=SD0-01, E:=SD0-02, F:=SD0-03
     
+  N8VEM_dsd.rom for N8VEM Z80 SBC V1/V2 + Dual SD:
+    - 512KB ROM, 512KB RAM
+    - 38.4KB serial console baud rate
+    - Basic ROM/RAM disk
+    - Dual SD support
+    - Drives A:=ROM, B:=RAM, C:=SD0-00, D:=SD0-01, E:=SD0-02, F:=SD0-03
+    
   N8VEM_propio.rom for N8VEM Z80 SBC V1/V2 + PROPIO:
     - 512KB ROM, 512KB RAM
     - 38.4KB serial console baud rate
@@ -183,6 +190,13 @@ ZSYSTEM (ZSDOS & ZCPR)
     - PPISD support
     - Drives A:=ROM, B:=RAM, C:=SD0-00, D:=SD0-01, E:=SD0-02, F:=SD0-03
     
+  N8VEM_dsd_z.rom for N8VEM Z80 SBC V1/V2 + Dual SD:
+    - 512KB ROM, 512KB RAM
+    - 38.4KB serial console baud rate
+    - Basic ROM/RAM disk
+    - Dual SD support
+    - Drives A:=ROM, B:=RAM, C:=SD0-00, D:=SD0-01, E:=SD0-02, F:=SD0-03
+    
   N8VEM_propio_z.rom for N8VEM Z80 SBC V1/V2 + PROPIO:
     - 512KB ROM, 512KB RAM
     - 38.4KB serial console baud rate

Source/ver.inc

@@ -2,5 +2,5 @@
 #DEFINE	RMN	5
 #DEFINE	RUP	0
 #DEFINE	RTP	1
-#DEFINE BIOSVER	"2.5 - Prerelease"
-#DEFINE REVISION 248
+#DEFINE BIOSVER	"2.5 - Beta 1"
+#DEFINE REVISION 412