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#1 |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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tri-format coverdisk: New Computer Express - Issue 148 - Cover Disk 1
Hi,
I have a tri-format coverdisk New Computer Express - Issue 148 - Cover Disk 1 which I have uploaded to The Zone!: http://eab.abime.net/zone/New%20Comp...20Disk%201.scp I can get the disk to work in Amiga emulation and hardware (note the Amiga MFM format is FFS, not OFS, so only works with Kickstart 2.0 or higher Amigas). I cannot get the image to be recognised in STEEM emulator, or the physical disk read in a USB floppy drive on a PC (the USB floppy drive can read DD and HD PC disks OK). Can somebody take a look at the image and say whether it should work, and how, on an ST (emulator) and on a PC USB floppy drive? Thank you. Last edited by solarmon; 31 October 2020 at 14:57. |
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#2 |
CaptainM68K-SPS France
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Making an IPF is the only solution.
EDIT : and in a kryoflux dump. As it is, i get errors on conversion between SCP and KF format. Last edited by dlfrsilver; 31 October 2020 at 17:38. |
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#3 | |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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Quote:
But why would the SCP image not work in STEEM? And why it not load in a USB PC floppy drive? The image, when looking at it in HxC software, looks clean: ![]() Unless it has been modified in some way? What errors on which tracks do you see in your conversion? Last edited by solarmon; 31 October 2020 at 17:56. |
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#4 |
CaptainM68K-SPS France
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the errors on converting comes from the fact that SCP dumps are oversampled (read : more than required).
Converting from KF to SCP works but not the other way around due to that. I need a KF dump to be able to help. |
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#5 |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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Unfortunately I only have a Greaseweazle. I'm not sure what you mean by oversampling. I assume you don't mean the number of revolutions?
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#6 |
CaptainM68K-SPS France
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the number of revolution is 5 normally. do you confirm ?
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#7 |
Registered User
Join Date: Sep 2016
Location: Ireland
Posts: 304
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How does the .scp look in Aufit?
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#8 |
Computer Wizard
Join Date: Aug 2007
Location: Ramberg/Norway
Posts: 928
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@solarmon, don't link directly to a file in The Zone in a thread, because they will be deleted after some time.
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#9 |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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For Greaseweazle, the default number of revs is 3. I can change it to 5, but I don't think that is going to change anything.
Keir has had a look at it and has identified some issue with track 0. It seems the ST/PC part of it may be corrupted. I'm looking for another working tri-format cover disk or image to be able to compare with. The New Computer Express cover disk images on the EAB FTP servers are only ADF ones and only seem to have Amiga MFM tracks. |
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#10 |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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I have done that intentionally as this is only meant to be a temporary file until we can verify it is OK. Once that has been done then somebody can add it to the FTP server if it is deemed fit.
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#11 |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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It looks like track 0 is too damaged/corrupted/overwritten to be able to recover this disk.
I was provided with another New Computer Express cover disk image (Disk 4), but using track 0 from that wasn't enough to be able to recover the ST/PC parts of it. It was recognised and the file/directory structure was there, but the data/contents seems to be corrupted. So, I'm still looking for a clean image of New Computer Express Disk 1. |
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#12 |
Lemon Curry ?
Join Date: Sep 2004
Location: Denmark
Age: 49
Posts: 4,176
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I've upped some dual and triple format coverdisks to the zone.
I tested Atari ST in Steem SSE, Amiga in WinUAE and DOS games in MAME. It works all thanks to Keirs latest rnc_dualformat and rnc_triformat in disk-analyse. ![]() Screenshot from DOS part, taken in MAME. ![]() MAME is apparently the only DOS emulator capable of running ipf images (looking at you DOSBOX and PCem ![]() |
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#13 | |
Registered User
Join Date: Dec 2018
Location: UK
Posts: 1,716
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Quote:
![]() Keir will be pleased to have some more tri-format images to look at! ![]() As well as Ace, Zero and New Computer Express, the 'Public Domain' magazine also had tri-format coverdisks. I'll be getting a couple of those soon, so I will hopefully be able to get clean image dumps of them. |
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#14 |
Registered User
Join Date: Oct 2012
Location: Italy
Age: 49
Posts: 2,980
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This is really something new for me .... tri-format ?
![]() I knew of dual format only indeed ![]() |
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#15 | |
Registered User
Join Date: May 2011
Location: Cambridge
Posts: 686
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Quote:
Rob's old Dual-Format (Amiga,ST) excludes PC because it uses a 10-sector-per-track single-sided layout for the ST tracks, which isn't supported by PC. |
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#16 |
Registered User
Join Date: Oct 2012
Location: Italy
Age: 49
Posts: 2,980
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Ahhh, thanks for the info
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#17 |
Registered User
Join Date: May 2011
Location: Cambridge
Posts: 686
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Any chance you can upload your original dumps (SCP or Kryoflux)? It's good for me to have a library of raw dumps for testing.
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#18 |
Lemon Curry ?
Join Date: Sep 2004
Location: Denmark
Age: 49
Posts: 4,176
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@Keir, you got a pm.
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#19 |
Registered User
Join Date: May 2011
Location: Cambridge
Posts: 686
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#20 |
Lemon Curry ?
Join Date: Sep 2004
Location: Denmark
Age: 49
Posts: 4,176
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Zero #17 in the zone.
Steem SSE/WinUAE tested. ![]() |
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