Miscellaneous

- Rename Dev.txt to ReadMe.txt for consistency
- Update Dev app Makefile to not copy the internal ReadMe file to the final output
- Remove obsolete constants in BPBIOS
- Minor patches to zx and cpmtools to workaround an odd behavior in Windows Subsystem for Linux that was  causing output to fail binary comparisons.

Source/Apps/Dev/Makefile

@@ -1,5 +1,5 @@
 OBJECTS = dev.com
-DOCS = dev.txt
+#DOCS = dev.txt
 DEST = ../../../Binary/Apps
 DOCDEST = ../../../Binary/Apps
 TOOLS = ../../../Tools

Source/BPBIOS/romwbw.lib

@@ -14,14 +14,6 @@ MEMTOP	EQU	HBLOC - 1		; Last usable address
 ;
 HB_DEBUG	EQU	FALSE		; See hbios.z80 file
 ;
-; TODO: Query system via HBIOS API to determine actual size of
-; RAM and ROM, then adjust BPBIOS operation accordingly.
-;
-HB_RAMBANKS	EQU	16		; For systems with 512K of RAM
-;HB_RAMBANKS	EQU	32		; For systems with 1MB of RAM
-HB_ROMBANKS	EQU	16		; For systems with 512K of ROM
-;HB_ROMBANKS	EQU	32		; For systems with 1MB of ROM
-;
 ; Set HB_IODEV to desired HBIOS character device unit number
 ;
 ; TODO: Query system via HBIOS API to determine number of serial

Source/HBIOS/ay38910.asm

@@ -522,7 +522,8 @@ AY_EI:
 AY_WRTPSG:
 	CALL	AY_DI
 #IFDEF SBCV2004
-	LD	A,8			; SBC-V2-004 CHANGE
+	LD	A,(RTCVAL)		; GET CURRENT RTC LATCH VALUE
+	OR	%00001000		; SBC-V2-004 CHANGE
 	OUT	(RTCIO),A		; TO HALF CLOCK SPEED
 #ENDIF
 #IF (CPUFAM == CPU_Z180)
@@ -540,7 +541,7 @@ AY_WRTPSG:
 	OUT0	(Z180_DCNTL),A		; AND RESTORE IT
 #ENDIF
 #IFDEF SBCV2004
-	LD	A,0			; SBC-V2-004 CHANGE TO
+	LD	A,(RTCVAL)		; SBC-V2-004 CHANGE TO
 	OUT	(RTCIO),A		; NORMAL CLOCK SPEED
 #ENDIF
 	JP	AY_EI
@@ -552,7 +553,8 @@ AY_WRTPSG:
 AY_RDPSG:
 	CALL	AY_DI
 #IFDEF SBCV2004
-	LD	A,8			; SBC-V2-004 CHANGE
+	LD	A,(RTCVAL)		; GET CURRENT RTC LATCH VALUE
+	OR	%00001000		; SBC-V2-004 CHANGE
 	OUT	(RTCIO),A		; TO HALF CLOCK SPEED
 #ENDIF
 #IF (CPUFAM == CPU_Z180)
@@ -570,7 +572,7 @@ AY_RDPSG:
 	OUT0	(Z180_DCNTL),A		; AND RESTORE IT
 #ENDIF
 #IFDEF SBCV2004
-	LD	A,0			; SBC-V2-004 CHANGE TO
+	LD	A,(RTCVAL)		; SBC-V2-004 CHANGE TO
 	OUT	(RTCIO),A		; NORMAL CLOCK SPEED
 #ENDIF
 	JP	AY_EI

Tools/unix/cpmtools/mkfs.cpm.c

@@ -220,6 +220,7 @@ int main(int argc, char *argv[]) /*{{{*/
 #if 0
     fprintf(stderr,"%d %04x %s\n",c,used+0x800,boot[c]);
 #endif
+    memset(bootTracks+used+size, 0xe5, bootTrackSize-used-size);
     if (size%drive.secLength) size=(size|(drive.secLength-1))+1;
     used+=size;
     close(fd);

Tools/unix/zx/cpmredir.c

@@ -287,6 +287,8 @@ cpm_word fcb_read(cpm_byte *fcb, cpm_byte *dma)
         redir_Msg("        (from %lx)\n", zxlseek(handle, 0, SEEK_CUR));
 
 	/* Read in the required amount */
+	
+	memset(dma, 0x00, redir_rec_len);
 
 #ifdef WIN32
 	{
@@ -300,6 +302,12 @@ cpm_word fcb_read(cpm_byte *fcb, cpm_byte *dma)
 	rv = read(handle, dma, redir_rec_len);
 #endif
 
+	if (rv == -1)
+		memset(dma, 0x00, redir_rec_len);
+
+	if ((rv >= 0) && (rv < redir_rec_len))
+		memset(dma + rv, 0x00, redir_rec_len - rv);
+
 	/* rd_len = length supposedly read, bytes. Round to nearest 128 bytes.
          */
 	rd_len = ((rv + 127) / 128) * 128;
@@ -493,6 +501,9 @@ cpm_word fcb_randrd(cpm_byte *fcb, cpm_byte *dma)
         if ((handle = redir_verify_fcb(fcb)) < 0) return 9;	/* Invalid FCB */
 
         if (zxlseek(handle, offs, SEEK_SET) < 0) return 6; /* bad record no. */
+	
+	memset(dma, 0x00, redir_rec_len);
+	
 #ifdef WIN32
 	{
 		BOOL b;
@@ -504,6 +515,13 @@ cpm_word fcb_randrd(cpm_byte *fcb, cpm_byte *dma)
 #else
         rv = read(handle, dma, redir_rec_len);
 #endif
+
+	if (rv == -1)
+		memset(dma, 0x00, redir_rec_len);
+
+	if ((rv >= 0) && (rv < redir_rec_len))
+		memset(dma + rv, 0x00, redir_rec_len - rv);
+
 	zxlseek(handle, offs, SEEK_SET);
 
 	redir_put_fcb_pos(fcb, offs);
@@ -579,6 +597,8 @@ cpm_word fcb_randwz(cpm_byte *fcb, cpm_byte *dma)
 
 	while (len < offs) 
 	{
+		memset(zerorec, 0, sizeof(zerorec));
+
 		rl = sizeof(zerorec);
 		if ((offs - len) < sizeof(zerorec)) rl = offs - len;
 #ifdef WIN32

Tools/unix/zx/zx.c

@@ -227,6 +227,8 @@ void load_comfile(void)
         }
 	fclose(fp);
 	
+	memset(RAM + 0x0100 + com_len, 0, 0xFD00 - com_len);
+	
 	Msg("Loaded %d bytes from %s\n", com_len, fname);
 }