From 3a0ae6b3fc2a3fefdc0bdf37ca95c2d5199e7308 Mon Sep 17 00:00:00 2001 From: Jeff Parsons Date: Tue, 30 May 2017 16:33:15 -0700 Subject: [PATCH] Updated PC-DOS 0.90 readmes --- disks/pcx86/dos/ibm/0.90/README.md | 44 +++++++++++++++++++++ disks/pcx86/dos/ibm/0.90/debugger/README.md | 44 +++++++++++++++++++++ 2 files changed, 88 insertions(+) diff --git a/disks/pcx86/dos/ibm/0.90/README.md b/disks/pcx86/dos/ibm/0.90/README.md index ac4d7d84f..4323b0d6f 100644 --- a/disks/pcx86/dos/ibm/0.90/README.md +++ b/disks/pcx86/dos/ibm/0.90/README.md @@ -70,3 +70,47 @@ provided below. CUBE DAT 402 04-30-81 12:00a 35 file(s) 144458 bytes 8192 bytes free + +The boot sector of the original PC-DOS 0.90 disk image contained: + + 00000000 eb 2f 14 00 00 00 60 00 20 37 2d 4d 61 79 2d 38 |./....`. 7-May-8| + 00000010 31 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |1...............| + 00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 00000030 00 fa 8c c8 8e d8 ba 00 00 8e d2 bc 00 7c fb a1 |.............|..| + 00000040 06 7c 8e d8 8e c0 ba 00 00 8b c2 cd 13 72 41 e8 |.|...........rA.| + 00000050 58 00 72 fb 2e 8b 0e 02 7c 51 bb 00 00 33 d2 b9 |X.r.....|Q...3..| + 00000060 08 00 be 01 00 56 b0 01 b4 02 cd 13 72 22 5e 58 |.....V......r"^X| + 00000070 e8 e7 00 2b c6 74 14 fe c5 b1 01 be 08 00 3b c6 |...+.t........;.| + 00000080 73 04 8b f0 eb 01 96 56 50 eb dd 2e ff 2e 04 7c |s......VP......|| + 00000090 be 44 7d b8 42 7d 50 32 ff ac 24 7f 74 0b 56 b4 |.D}.B}P2..$.t.V.| + 000000a0 0e bb 07 00 cd 10 5e eb f0 c3 bb 00 00 b9 04 00 |......^.........| + 000000b0 b8 01 02 cd 13 1e 72 34 8c c8 8e d8 bf 00 00 b9 |......r4........| + 000000c0 0b 00 26 80 0d 20 26 80 8d 20 00 20 47 e2 f3 bf |..&.. &.. . G...| + 000000d0 00 00 be 76 7d b9 0b 00 fc f3 a6 75 0f bf 20 00 |...v}......u.. .| + 000000e0 be 82 7d b9 0b 00 f3 a6 75 02 1f c3 be f9 7c e8 |..}.....u.....|.| + 000000f0 a5 ff b4 00 cd 16 1f f9 c3 0d 0a 4e 6f 6e 2d 53 |...........Non-S| + 00000100 79 73 74 65 6d 20 64 69 73 6b 20 6f 72 20 64 69 |ystem disk or di| + 00000110 73 6b 20 65 72 72 6f f2 0d 0a 52 65 70 6c 61 63 |sk erro...Replac| + 00000120 65 20 61 6e 64 20 73 74 72 69 6b 65 20 61 6e 79 |e and strike any| + 00000130 20 6b 65 79 20 77 68 65 6e 20 72 65 61 64 f9 0d | key when read..| + 00000140 0a 00 cd 18 0d 0a 44 69 73 6b 20 42 6f 6f 74 20 |......Disk Boot | + 00000150 66 61 69 6c 75 72 e5 0d 0a 00 50 52 8b c6 bf 00 |failur....PR....| + 00000160 02 f7 e7 03 d8 5a 58 c3 52 6f 62 65 72 74 20 4f |.....ZX.Robert O| + 00000170 27 52 65 61 72 20 69 62 6d 62 69 6f 20 20 63 6f |'Rear ibmbio co| + 00000180 6d b0 69 62 6d 64 6f 73 20 20 63 6f 6d b0 c9 00 |m.ibmdos com...| + 00000190 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + +Note that if you download the disk image from the PCjs website (using the "Save" button on a PCjs machine), +the following boot sector bytes will differ: + + 00000000 eb 2f 14 00 00 00 60 00 20 37 2d 00 02 01 01 00 |./....`. 7-.....| + 00000010 02 40 00 40 01 fe 01 00 08 00 01 00 00 00 00 00 |.@.@............| + +This is simply a side-effect of *all* PCx86 disk images provided by the PCjs website: a BPB is automatically +included in all disk images. This ensures that your modern operating system will be able to mount the disk image. diff --git a/disks/pcx86/dos/ibm/0.90/debugger/README.md b/disks/pcx86/dos/ibm/0.90/debugger/README.md index b0e258b94..146e07926 100644 --- a/disks/pcx86/dos/ibm/0.90/debugger/README.md +++ b/disks/pcx86/dos/ibm/0.90/debugger/README.md @@ -71,3 +71,47 @@ provided below. CUBE DAT 402 04-30-81 12:00a 35 file(s) 144458 bytes 8192 bytes free + +The boot sector of the original PC-DOS 0.90 disk image contained: + + 00000000 eb 2f 14 00 00 00 60 00 20 37 2d 4d 61 79 2d 38 |./....`. 7-May-8| + 00000010 31 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |1...............| + 00000020 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 00000030 00 fa 8c c8 8e d8 ba 00 00 8e d2 bc 00 7c fb a1 |.............|..| + 00000040 06 7c 8e d8 8e c0 ba 00 00 8b c2 cd 13 72 41 e8 |.|...........rA.| + 00000050 58 00 72 fb 2e 8b 0e 02 7c 51 bb 00 00 33 d2 b9 |X.r.....|Q...3..| + 00000060 08 00 be 01 00 56 b0 01 b4 02 cd 13 72 22 5e 58 |.....V......r"^X| + 00000070 e8 e7 00 2b c6 74 14 fe c5 b1 01 be 08 00 3b c6 |...+.t........;.| + 00000080 73 04 8b f0 eb 01 96 56 50 eb dd 2e ff 2e 04 7c |s......VP......|| + 00000090 be 44 7d b8 42 7d 50 32 ff ac 24 7f 74 0b 56 b4 |.D}.B}P2..$.t.V.| + 000000a0 0e bb 07 00 cd 10 5e eb f0 c3 bb 00 00 b9 04 00 |......^.........| + 000000b0 b8 01 02 cd 13 1e 72 34 8c c8 8e d8 bf 00 00 b9 |......r4........| + 000000c0 0b 00 26 80 0d 20 26 80 8d 20 00 20 47 e2 f3 bf |..&.. &.. . G...| + 000000d0 00 00 be 76 7d b9 0b 00 fc f3 a6 75 0f bf 20 00 |...v}......u.. .| + 000000e0 be 82 7d b9 0b 00 f3 a6 75 02 1f c3 be f9 7c e8 |..}.....u.....|.| + 000000f0 a5 ff b4 00 cd 16 1f f9 c3 0d 0a 4e 6f 6e 2d 53 |...........Non-S| + 00000100 79 73 74 65 6d 20 64 69 73 6b 20 6f 72 20 64 69 |ystem disk or di| + 00000110 73 6b 20 65 72 72 6f f2 0d 0a 52 65 70 6c 61 63 |sk erro...Replac| + 00000120 65 20 61 6e 64 20 73 74 72 69 6b 65 20 61 6e 79 |e and strike any| + 00000130 20 6b 65 79 20 77 68 65 6e 20 72 65 61 64 f9 0d | key when read..| + 00000140 0a 00 cd 18 0d 0a 44 69 73 6b 20 42 6f 6f 74 20 |......Disk Boot | + 00000150 66 61 69 6c 75 72 e5 0d 0a 00 50 52 8b c6 bf 00 |failur....PR....| + 00000160 02 f7 e7 03 d8 5a 58 c3 52 6f 62 65 72 74 20 4f |.....ZX.Robert O| + 00000170 27 52 65 61 72 20 69 62 6d 62 69 6f 20 20 63 6f |'Rear ibmbio co| + 00000180 6d b0 69 62 6d 64 6f 73 20 20 63 6f 6d b0 c9 00 |m.ibmdos com...| + 00000190 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001a0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001b0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001c0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001d0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001e0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + 000001f0 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................| + +Note that if you download the disk image from the PCjs website (using the "Save" button on a PCjs machine), +the following boot sector bytes will differ: + + 00000000 eb 2f 14 00 00 00 60 00 20 37 2d 00 02 01 01 00 |./....`. 7-.....| + 00000010 02 40 00 40 01 fe 01 00 08 00 01 00 00 00 00 00 |.@.@............| + +This is simply a side-effect of *all* PCx86 disk images provided by the PCjs website: a BPB is automatically +included in all disk images. This ensures that your modern operating system will be able to mount the disk image.