CF Card compatibility improvement

Older CF Cards did not reset IDE registers to defaults values when reset.  Implemented a work around.

Doc/ChangeLog.txt

@@ -7,6 +7,7 @@ Version 3.1
 - WBW: Made .com images smaller (contain only Z-System now)
 - WBW: Support automatic clock hardware detection and fallback
 - WBW: Support use of CTC for SIO baud rate divisors
+- WBW: Updated IDE and PPIDE drivers to improve old CF Card compatibility
 
 Version 3.0.1
 -------------

Readme.unix

@@ -1,41 +1,67 @@
-this tree now contains makefiles and tools to build on Linux and MacosX
-Linux is rather more thoroughly tested compared to os-x.
-
-to get here, TASM and the propeller generation tools needed to be replaced,
-and since the unix filesystem is usually case-sensitive, and CP/M and windows
-are not, the cpm tools were made case-insensitive.
-
-TASM was replaced with uz80as, which implements a subset of TASM and fixes some
-bugs.  however, I needed to add some functionality to make it build the sources
-as they exist in this tree.   in particular, one thing to be very careful of is
-that TASM is not entirely consistent with respect to the .DS directive.
-it's usually a bad idea to mix .DS, .FILL, .DB with .ORG.  
+This tree now contains makefiles and tools to build on Linux and 
+MacosX Linux is rather more thoroughly tested compared to os-x.
+
+To get here, TASM and the propeller generation tools needed to be 
+replaced, and since the unix filesystem is usually case-sensitive, 
+and CP/M and windows are not, the cpm tools were made case-insensitive.
+
+TASM was replaced with uz80as, which implements a subset of TASM and 
+fixes some bugs.  however, I needed to add some functionality to make 
+it build the sources as they exist in this tree.   in particular, one 
+thing to be very careful of is that TASM is not entirely consistent 
+with respect to the .DS directive. it's usually a bad idea to mix 
+.DS, .FILL, .DB with .ORG.
+
 	.DS n is best thought of as .ORG $ + n
-	.ORG changes the memory pointer, but does not change the file output point.
-		it works a lot more like M80, SLR* .phase
+	.ORG  changes the memory pointer, but does not change the file
+	      output point.  It works a lot more like M80, SLR* .PHASE
+
+It assumes that you have some standard system tools and libraries 
+installed specifically: gcc, gnu make, libncurses
+
+To build:
+	cd to the top directory and type "make".
+
+By default, this will generate all of the standard configurations of
+RomWBW for all platforms.  If you want to customize the process to
+only build one (or a subset) of the configurations, edit the "makefile"
+in the HBIOS directory.  If you create your own, custom configuration,
+you can add it there as well.
+
+For MacOS users, you may encounter a failure reading or writing files.
+This is caused by protection features in MacOS (at least, in Catalina)
+that prevent programs built on your local system (unsigned) from
+running.  To disable this feature:
 
-it assumes that you have some standard system tools and libraries installed
-specifically: gcc, gnu make, libncurses
+1) Make sure you exit System Preferences.
+2) Open a terminal session and type the following.  You will need to
+   authenticate with an admin account.  sudo spctl --master-disable
+3) Exit terminal
+4) Go into System Preferences and choose Security and Privacy
+5) Select the General tab if it isn't already selected
+6) You should now see a third selection under
+   "Allow apps downloaded from:" of Anywhere - select this.
+7) Now you can run the build successfully.
 
-to build:
-	cd to the top directory and type make.
+DISCLAIMER: You do this at your own risk.  I highly recommend that you
+return the settings back to normal immediately after doing a build.
 
-heavy use is made of make's include facility and pattern rules.
-the master rule set is in Tools/Makefile.inc.  changes here will affect
-almost every Makefile, and where exceptions are needed, the overrides are
-applied in the lower Makefiles.
+Heavy use is made of make's include facility and pattern rules. the 
+master rule set is in Tools/Makefile.inc.  changes here will affect 
+almost every Makefile, and where exceptions are needed, the overrides 
+are applied in the lower Makefiles.
 
-these tools can run a windows-linux regression test, where all the binaries are
-compared to a baseline windows build.
+These tools can run a windows-linux regression test, where all the 
+binaries are compared to a baseline windows build.
 
 Credit:
 
 	uz80as was written by Jorge Giner Cordero, jorge.giner@hotmail.com,
 	and the original source can be found at https://github.com/jorgicor/uz80as
 
-	the propeller tools use bstc and openspin, parallax tools from 
+	the propeller tools use bstc and openspin, parallax tools from
 	http://www.fnarfbargle.com/bst.html https://github.com/parallaxinc/OpenSpin
-	note that bst is not open source or even currently maintained, so I could 
+	note that bst is not open source or even currently maintained, so I could
 	not generate a version for 64 bit osx.
 
 	cpmtools were the most current I could find, and it has been hacked to do
@@ -45,5 +71,5 @@ Credit:
 	both zx and cpmtools ship with an overly complicated makefile generation system
 	and this is ignored.
 
-	this whole linux build framework is the work of Curt Mayer, curt@zen-room.org.
+	This whole linux build framework is the work of Curt Mayer, curt@zen-room.org.
 	use it for whatever you like; this is not my day job.

Source/HBIOS/ide.asm

@@ -922,36 +922,15 @@ IDE_RESET:
 	PRTS(" RESET$")
 #ENDIF
 ;
-;#IF (IDEMODE == IDEMODE_MK4)
-;
-	LD	A,(IY+IDE_MODE)		; GET MODE
-	CP	IDEMODE_MK4		; MK4?
-	JR	NZ,IDE_RESET1		; IF NOT, BYPASS
-;
-	; USE HARDWARE RESET LINE
-#IF (IDETRACE >= 3)
-	PRTS(" HARD$")
-#ENDIF
-	LD	A,$80			; HIGH BIT OF XAR IS IDE RESET
-	;OUT	(IDE_IO_XAR),A
-	CALL	IDE_OUT
-	.DB	IDE_REG_XAR
-	LD	DE,2			; DELAY 32US (SPEC IS >= 25US)
-	CALL	VDELAY
-	XOR	A			; CLEAR RESET BIT
-	;OUT	(IDE_IO_XAR),A
-	CALL	IDE_OUT
-	.DB	IDE_REG_XAR
-;
-IDE_RESET1:
-;
-;#ENDIF
-;
 ;#IF (IDEMODE == IDEMODE_RC)
 ;
-	LD	A,(IY+IDE_MODE)		; GET MODE
-	CP	IDEMODE_RC		; RC2014?
-	JR	NZ,IDE_RESET2		; IF NOT, BYPASS
+	; OLDER CF CARDS DO NOT SEEM TO SET THE 
+	; REGISTERS ON RESET, SO HERE WE FAKE THINGS BY
+	; SETTING THEM AS A RESET WOULD.  SO WE ALWAYS
+	; DO THE FAKE.
+	;LD	A,(IY+IDE_MODE)		; GET MODE
+	;CP	IDEMODE_RC		; RC2014?
+	;JR	NZ,IDE_RESET2		; IF NOT, BYPASS
 ;
 	; RC2014 CANNOT ADDRESS THE DEVICE CONTROL PORT AND
 	; HAS NO WAY TO PERFORM A HARD RESET FROM SOFTWARE,
@@ -979,6 +958,33 @@ IDE_RESET2:
 ;
 ;#ENDIF
 ;
+;#IF (IDEMODE == IDEMODE_MK4)
+;
+	LD	A,(IY+IDE_MODE)		; GET MODE
+	CP	IDEMODE_MK4		; MK4?
+	JR	NZ,IDE_RESET1		; IF NOT, BYPASS
+;
+	; USE HARDWARE RESET LINE
+#IF (IDETRACE >= 3)
+	PRTS(" HARD$")
+#ENDIF
+	LD	A,$80			; HIGH BIT OF XAR IS IDE RESET
+	;OUT	(IDE_IO_XAR),A
+	CALL	IDE_OUT
+	.DB	IDE_REG_XAR
+	LD	DE,20			; DELAY 32US (SPEC IS >= 25US)
+	CALL	VDELAY
+	XOR	A			; CLEAR RESET BIT
+	;OUT	(IDE_IO_XAR),A
+	CALL	IDE_OUT
+	.DB	IDE_REG_XAR
+	LD	DE,20
+	CALL	VDELAY
+;
+IDE_RESET1:
+;
+;#ENDIF
+;
 ;#IF ((IDEMODE != IDEMODE_MK4) & (IDEMODE != IDEMODE_RC))
 ;
 	LD	A,(IY+IDE_MODE)		; GET MODE

Source/HBIOS/ppide.asm

@@ -974,6 +974,27 @@ PPIDE_RESET:
 	CALL	PPIDE_PRTPREFIX
 	PRTS(" RESET$")
 #ENDIF
+;
+	; OLDER CF CARDS DO NOT SEEM TO SET THE 
+	; REGISTERS ON RESET, SO HERE WE FAKE THINGS BY
+	; SETTING THEM AS A RESET WOULD
+#IF (IDETRACE >= 3)
+	PRTS(" FAKE$")
+#ENDIF
+	XOR	A
+	;OUT	(IDE_IO_CYLLO),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_CYLLO
+	;OUT	(IDE_IO_CYLHI),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_CYLHI
+	INC	A
+	;OUT	(IDE_IO_COUNT),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_COUNT
+	;OUT	(IDE_IO_SECT),A
+	CALL	PPIDE_OUT
+	.DB	PPIDE_REG_SECT
 ;
 	; SETUP PPI TO READ
 	LD	A,PPIDE_DIR_READ	; SET DATA BUS DIRECTION TO READ

Source/ver.inc

@@ -2,4 +2,4 @@
 #DEFINE	RMN	1
 #DEFINE	RUP	0
 #DEFINE	RTP	0
-#DEFINE BIOSVER	"3.1-pre.4"
+#DEFINE BIOSVER	"3.1-pre.5"

Source/ver.lib

@@ -3,5 +3,5 @@ rmn	equ	1
 rup	equ	0
 rtp	equ	0
 biosver	macro
-	db	"3.1-pre.4"
+	db	"3.1-pre.5"
 	endm