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Re: Any utility to convert TrackStar board emulator Disk images to Emulator image files??
ok..i've no idea what you guys are discussing...but if you get this to work
let me know ...i have a trackstar e and prob could use a util like this
if/when you get it tweaked
i'm currently trying to backup all my stuff and make it avail utils etc for
all my apple stuff...so if it works i'd throw in any trackstar stuff in the
process
but again i don't program...so if yo do get this to work.remember a lot of
us are dense
brad
former sysop lost-gonzo.com
"Andy McFadden" <fadden@fadden.com> wrote in message
news:GuAkc.9075$Fo4.114255@typhoon.sonic.net...
> In comp.sys.apple2 Gerald Ryckman <geraldryckman@hotmail.com> wrote:
> > You can add a write routine similarly. A dsk2app utility should be
> > similar. I have one somewhere if it is needed. [...]
>
> Converting a .do file to a .app file should be pretty easy. Converting
> a .nib file to a .app file could be tricky, because (if I understand this
> correctly) the maximum length of a TrackStar track is 6656 minus the
> 128 byte header, the 2 byte length indicator, and a 1 byte "this is where
> the track stops" value.
>
> For example:
>
> 0000000: 444f 5320 332e 3320 5359 5354 454d 204d DOS 3.3 SYSTEM M
> 0000010: 4153 5445 5220 2020 2020 2020 2020 2020 ASTER
> 0000020: 2020 2020 2020 2020 2020 2020 2020 0000 ..
> 0000030: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000040: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000050: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000060: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000070: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0000080: 0096 9796 9b96 9796 9b96 979b 9696 9696 ................
> 0000090: 9696 9696 9696 9696 9696 9696 bdcf bcd6 ................
> 00000a0: d6d6 a7ce d6f5 daf7 e7f5 dcf7 cbf5 adfe ................
> 00000b0: fedc aebe bace fb9b dc9d dcd9 eebb f3b2 ................
> 00000c0: f4d3 eab4 a6e6 f9ff abf4 f6ee f9d9 e7eb ................
> 00000d0: d9d3 bef3 a7f4 d3ea f3da e6f9 ffab ead9 ................
> 00000e0: d3be b4bb acdf eaf2 daed d7fa e7f7 f7d6 ................
> 00000f0: f4eb ecf9 f6d9 d7db d9d3 bef3 a7bb bdd6 ................
> 0000100: a7ce ebe5 a6eb e5a6 ebe5 bef7 bcfa ddea ................
> [...]
> 0001900: fbeb cd9a ceb7 baed f7da dae6 bfb4 adcb ................
> 0001910: b4ad b9cb e9ad 9b97 969b 9b96 979b ade9 ................
> 0001920: cbb9 adb4 cbad b4bf e6da daf7 edba b7ce ................
> 0001930: 9acd ebfb b6e5 ffbb e5ff bbb6 b4cf d3e6 ................
> 0001940: b2de b6b4 bcb9 d6af e6e6 ebaf afdd af9e ................
> 0001950: e6dd dfb5 efea aede aaeb ffff ffff ffff ................
> 0001960: ffff ffff ffff ffff ffff ffff ffff ffd5 ................
> 0001970: aa96 fffe aaaa aeaf fbfb deaa ebff ffff ................
> 0001980: ffff ffd5 aaad cef6 b5dd facd f4f3 fcb2 ................
> 0001990: adaf a6e6 e5ef f69e aeaf abb3 eceb da9e ................
> 00019a0: 9fb6 b9ea dade f7b7 969a 9eba cdcd 9af6 ................
> 00019b0: ebdf 96d6 f3bd b3ef f5b2 fcef cfd6 edf2 ................
> 00019c0: edb6 efe6 d6dd ae9b fcb3 fb9f b3e5 deae ................
> 00019d0: 97af e9ec ac96 d7ba fcaf bedc cdbe f6eb ................
> 00019e0: cfed dee6 dace f2eb bef6 ddb7 f4eb cbf4 ................
> 00019f0: dee6 dabd f5de e7d9 bdf5 ddb6 f3ec 9918 ................
> 0001a00: 444f 5320 332e 3320 5359 5354 454d 204d DOS 3.3 SYSTEM M
> 0001a10: 4153 5445 5220 2020 2020 2020 2020 2020 ASTER
> 0001a20: 2020 2020 2020 2020 2020 2020 2020 0000 ..
> 0001a30: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0001a40: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0001a50: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0001a60: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0001a70: 0000 0000 0000 0000 0000 0000 0000 0000 ................
> 0001a80: 009a 9db7 aed3 aea7 9db7 aed3 979e 9eff ................
> 0001a90: bae7 e7db cdba a6ff ceda ceba dfe9 b3de ................
>
> Note the value at $80 is zero. The gunk from $191a through $19fd
> inclusive is garbage, which explains the d5aa96/d5aaad occurrences in
> forward order. The maximum .app track length is 6525.
>
> A 6656-byte .nib image uses all $1a00 bytes. Some emulators also support
> 6384-byte ($18f0) .nib images; this is the minimum necessary to hold a
> track (using the gap widths employed by the DOS 3.3 format routine), and
> was sometimes used when converting .do to .nib.
>
> It should be possible, of course, to convert a .nib to .do and then .do
> to .app, but that would lose the data that made storing the image in .nib
> format worthwhile in the first place.
>
> In theory some portion of the track image in a .nib file will overlap.
> Because of the way the tracks get created, it's not guaranteed that the
> overlap is aligned with the start of the track in the image file. If the
> nib image was created from a .do file, it probably doesn't have any
> overlap, but rather a large FF region.
>
> Bottom line: converting .app to .nib or .do should be straightforward.
> Converting .do to .app should be straightforward. Converting .nib to .app
> without loss of data looks hard.
>
> --
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