From 8221db255f9cc66af2a9356e5ab68c6fd555ad3a Mon Sep 17 00:00:00 2001
From: "B. Watson" <urchlay@slackware.uk>
Date: Wed, 8 May 2024 15:09:16 -0400
Subject: fenders: add -I, -d, -b options.

---
 atr2xfd.c | 57 ++++++++++++++++++++++++++++++++++++++++++++++++++++-----
 1 file changed, 52 insertions(+), 5 deletions(-)

(limited to 'atr2xfd.c')

diff --git a/atr2xfd.c b/atr2xfd.c
index bed24fe..5929433 100644
--- a/atr2xfd.c
+++ b/atr2xfd.c
@@ -255,12 +255,23 @@ int main(int argc, char **argv) {
 unsigned char dos1_sig[] = "\x00\x01\x00\x07\x00\x13\x4c\x12";
 unsigned char dos2_sig[] = "\x00\x03\x00\x07\x40\x15\x4c\x14";
 unsigned char dos3_sig[] = "\x01\x09\x00\x32\x06\x32";
-unsigned char mydos3_sig[] = "\x00\x03\x00\x07\xe0\x07\x4c\x14";
+unsigned char dos4_sig[] = "\x00\x21\x01\x07\xf8\x07\x4c\xd9";
+unsigned char dos4_noboot_sig[] = "\x00\x00\x00\x01\x00\x01\x01\x01";
+unsigned char mydos30_sig[] = "\x00\x03\x00\x07\xd8\x17\x4c\x14";
+unsigned char mydos31_sig[] = "\x00\x03\x00\x07\xe0\x07\x4c\x14";
 unsigned char mydos4_sig[] = "\x4d\x03\x00\x07\xe0\x07\x4c\x14";
 unsigned char topdos11_sig[] = "\xc0\x03\x00\x07\x40\x15\x4c\x24";
 unsigned char topdos15_sig[] = "\x80\x03\x00\x07\x40\x15\x4c\x24";
 unsigned char blank_sig[] = "\x00\x00\x00\x00\x00\x00\x00\x00";
 unsigned char pico_sig[] = "\x00\x03\x00\x10\x10\x4c";
+unsigned char superdos2_sig[] = "\x29\x03\x00\x07\x40\x15\xa0";
+unsigned char superdos5_sig[] = "\x64\x03\x00\x07\x40\x15\xa9\x07";
+unsigned char smartdos_sig[] = "\x00\x03\x00\x07\xd4\x15\x4c\x14";
+unsigned char dosxe_sig[] = "\x58\x03\x00\x07\xca\x0c\x4c\x30";
+
+/* both of these claim to be "Turbo DOS XE version 2.1" */
+unsigned char turbodos_sig[] = "\x04\x03\x00\x07\x40\x15\x4c\x16";
+unsigned char turbodosxe_sig[] = "\x01\x03\x00\x07\x40\x15\x4c\x16";
 
 /* these signatures are for offset $18 of sector 1. */
 unsigned char dos2_code_sig[] = "\x36\xad\x12\x07";
@@ -272,7 +283,7 @@ void classify_boot_sector(FILE *f) {
 	unsigned char buf[128];
 	char *dos_type = "Unknown", *boot_text = "";
 	int bootable = -1; /* -1 = unknown, 0 = no, 1 = yes */
-	int i;
+	int dos2_bootable, i;
 
 	/* read 1st sector... */
 	if( (fread(buf, 1, 128, f) < 128) ) {
@@ -285,11 +296,22 @@ void classify_boot_sector(FILE *f) {
 	fputc('\n', stderr);
 #endif
 
+	dos2_bootable = (buf[14] != 0);
+
 	/* now figure out what kind of boot sector this is */
 	if(SIG_MATCH(buf, dos1_sig)) {
 		dos_type = "DOS 1.0";
+		bootable = dos2_bootable;
 	} else if(SIG_MATCH(buf, dos3_sig)) {
 		dos_type = "DOS 3.0";
+		/* can't tell if bootable from just the boot sector, would have
+			to search for FMS.SYS */
+	} else if(SIG_MATCH(buf, dos4_sig)) {
+		dos_type = "DOS 4.0";
+		bootable = 1;
+	} else if(SIG_MATCH(buf, dos4_noboot_sig)) {
+		dos_type = "DOS 4.0";
+		bootable = 0;
 	} else if(SIG_MATCH(buf, dos2_sig)) {
 		if(SIG_MATCH(buf + 0x18, dos2_code_sig))
 			dos_type = "DOS 2.0";
@@ -297,7 +319,7 @@ void classify_boot_sector(FILE *f) {
 			dos_type = "DOS 2.5";
 		else
 			dos_type = "DOS 2.0 compatible";
-		bootable = (buf[14] != 0);
+		bootable = dos2_bootable;
 	} else if(buf[0] == 0x00 && buf[1] == 0x03 &&
 			(buf[32] == 0x11 || buf[32] == 0x20) &&
 			buf[6] == 0x4c && buf[7] == 0x80) {
@@ -305,12 +327,37 @@ void classify_boot_sector(FILE *f) {
 			dos_type = "SpartaDOS 1.1";
 		else
 			dos_type = "SpartaDOS >= 2";
-	} else if(SIG_MATCH(buf, mydos3_sig)) {
-		dos_type = "MyDOS 3.x";
+	} else if(SIG_MATCH(buf, mydos30_sig)) {
+		dos_type = "MyDOS 3.0x";
+		bootable = dos2_bootable;
+	} else if(SIG_MATCH(buf, mydos31_sig)) {
+		dos_type = "MyDOS 3.1x";
+		bootable = dos2_bootable;
 	} else if(SIG_MATCH(buf, mydos4_sig)) {
 		dos_type = "MyDOS 4.x";
+		bootable = dos2_bootable;
 	} else if(SIG_MATCH(buf, pico_sig)) {
 		dos_type = "MyPicoDOS 4.x";
+	} else if(SIG_MATCH(buf, topdos11_sig)) {
+		dos_type = "Top DOS 1.1";
+		bootable = !(buf[15] == 0 && buf[16] == 0);
+	} else if(SIG_MATCH(buf, topdos15_sig)) {
+		dos_type = "Top DOS 1.5";
+		bootable = dos2_bootable;
+	} else if(SIG_MATCH(buf, superdos2_sig)) {
+		dos_type = "SuperDOS 2.9";
+		bootable = (buf[7] != 0);
+	} else if(SIG_MATCH(buf, superdos5_sig)) {
+		dos_type = "SuperDOS 5.1";
+	} else if(SIG_MATCH(buf, turbodos_sig)) {
+		dos_type = "Turbo DOS XE";
+	} else if(SIG_MATCH(buf, turbodosxe_sig)) {
+		dos_type = "Turbo DOS XE";
+	} else if(SIG_MATCH(buf, dosxe_sig)) {
+		dos_type = "DOS XE";
+	} else if(SIG_MATCH(buf, smartdos_sig)) {
+		dos_type = "Smart DOS";
+		bootable = dos2_bootable;
 	} else if(SIG_MATCH(buf, blank_sig)) {
 		dos_type = "None (empty boot sector)";
 		bootable = 0;
-- 
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