25 March 2024, 13:33 | #1 |
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Tri-Formats floppy disk recognition problem.
Hello,
i did some tests from a tri-format floppy disk (PC/ST/Amiga) from a raw stream converted first to SCP then to E-ADF. I tested the result under WinUae and I have some results (the same with SCP or E-Adf ) which I don't understand. PC part: Under CrossDos <= 5.07: PC part recognized (only Amiga side, pic 1 ). Under CrossDos >= 6.0: PC part unreadable The floppy disk is unreadable under PCX or PC-Task. On the other hand, it is perfectly readable with Transformer (and the file executes correctly, pic 2 ). ST part: Medusa (100% software): ST part recognized. Chamaeleon 1.0 (100% software): ST part recognized and usable ( pic 3 ). Amtari 3.1: ST part not recognized. EmuTos: ST part not recognized. What happens so that this only works in certain cases ? Thanks. |
25 March 2024, 13:42 | #2 |
Going nowhere
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It could be that Amtari and Emutos have issues with double sided disks, lots and I mean lots of early ST'S only had a single sided drive.
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25 March 2024, 14:07 | #3 |
Thalion Webshrine
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Do Triformat disks work, in an Amiga disk drive, in Amiga->PC/ST emulators with real Amiga hardware?
SCP Dualformat disks work fine in WinUAE (Amiga), Hatari (ST) but I never tried an SCP dual format disk in WinUAE using an ST emulator. Last edited by alexh; 25 March 2024 at 14:59. |
25 March 2024, 19:48 | #4 | |
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Quote:
DD floppies generally work well (at least the ones I tested (lots of utilities), at least when reading, running programs is another story). |
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25 March 2024, 19:57 | #5 | |
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Quote:
Another user informed me that this worked when he used this type of disk on his machine. I would ask him for additional details. |
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25 March 2024, 20:03 | #6 |
Lemon Curry ?
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Why not just convert the raw stream to ipf ?
disk-analyse support rnc_triformat and rnc_dualformat disks. All the dual/tri-format disks I've converted this way all work on their respective emus like Hatari/Steem SSE/MAME/WinUAE. |
26 March 2024, 10:47 | #7 |
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Is IPF format supported in any PC emulator?
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26 March 2024, 12:32 | #8 | |
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Quote:
My SCP works very well under Steem SSE or Hatari. My problem occurs under WinUae when I insert this same SCP to try to read the PC/ST part. This works on a case-by-case basis depending on the emulators or versions of CrossDos (see 1st post). |
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26 March 2024, 12:54 | #9 |
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Most Amiga software that reads PC/Atari floppies probably assume it is standard PC/Atari disk and get confused when read attempt (randomly?) returns unexpected Amiga data.
Real Atari/PC HD controller would skip Amiga sync words and only start reading when it detects PC/Atari sync words. |
26 March 2024, 13:04 | #10 | |
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Quote:
Executables are in this thread: https://eab.abime.net/showthread.php?t=62217&page=45 |
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26 March 2024, 16:49 | #11 |
Lemon Curry ?
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Only MAME support loading ipfs (use ct486 driver and a DOS/Win95 setup).
https://eab.abime.net/showpost.php?p...9&postcount=12 I have done my bit of ranting about the lack of ipf support in DOSBox/PCem etc. Last edited by Retroplay; 26 March 2024 at 16:54. |
27 March 2024, 10:00 | #12 | |
CaptainM68K-SPS France
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Quote:
Which disk is it ? |
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27 March 2024, 11:56 | #13 |
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27 March 2024, 12:59 | #14 |
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New Computer Express cover disks are tri-format. Amiga Magazine Rack only has 3 or 4 of them listed.
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27 March 2024, 15:38 | #15 |
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27 March 2024, 19:07 | #16 | |
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Quote:
https://drive.google.com/file/d/1UX2...i-2/view?pli=1 Original thread and files ( AF ) in french : https://www.amigafrance.com/forums/t...squettes-tilt/ |
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27 March 2024, 20:55 | #17 |
Lemon Curry ?
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TILT 107, 108, 110, 115, 116 ipfs in the Zone.
105, 112, 113 can be found in Coverdisks unofficial ipfs TOSEC set. As usual, WinUAE, Steem SSE and MAME for PC part used to test. (ct486 + MS-DOS 6.22) Legends of Valour ST demo on 116 is an STzip archive (in LOV folder). I guess HD install is needed, Idk. Btw, what is DP magazine ? Can't find any info anywhere, or maybe I'm just blind, Idk. Last edited by Retroplay; 27 March 2024 at 21:10. |
28 March 2024, 00:06 | #18 |
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28 March 2024, 01:40 | #19 |
Lemon Curry ?
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PD. D'oh, I did a "switch-a-roo".
Disk 4 stream has bad tracks (58.0-58.1). The other 5 can be found in TOSEC along with some of the Generation4 disks. https://ftp2.grandis.nu/turransearch...0&httplinks=on About TILT 107, it's supposed to have a Lure of the Temptress demo for ST but I can't find any traces of it on the disk. https://archive.org/details/Tilt107 Doodle Bug demo (Amiga) and Legend of Kyrandia demo (DOS) is all I see. |
28 March 2024, 20:20 | #20 | |
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Quote:
And thank you for the IPF. |
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