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#105111 - 04/12/16 05:44 PM cpc 6128 - demo  
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hi

i've try this demo for cpc 6128 in mess (build this day)

http://www.cpc-power.com/index.php?page=detail&num=9023

after a short while, a black screen

music related ?

thanks in advance

Last edited by Breiztiger; 04/12/16 05:45 PM.
#105153 - 04/16/16 08:07 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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i'm replying myself ;-)

black screen is gone with last build at 04/16/16

yes !!!

#105154 - 04/16/16 08:12 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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another bug - demo "points barres" from overlanders

http://www.cpc-power.com/index.php?page=detail&num=12683

first screen is not well centered and with bad color in rasters

crtc related surely

#105164 - 04/16/16 10:16 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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Anything that fiddles with (I think) CRTC register 3 to try to smooth horizontal scrolling is always offset (check Ghosts and Goblins or Out of this World). I've mentioned it to Judge before, hopefully he remembers. wink


- Barry Rodewald
#105778 - 05/29/16 10:10 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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6128plus bug

http://www.cpc-power.com/index.php?page=detail&num=12700

the green ligne is scramble at both side

not on real 6128plus (like picture on cpc-power)

#105835 - 06/01/16 08:23 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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CPC6128plus monochrome display is messed in general.
Already reported and achnowledged in mametesters.

#105871 - 06/02/16 07:29 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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i don't speak about green screen

if you look at the link, it's a color screen

#105875 - 06/02/16 08:05 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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OK

#107649 - 10/16/16 09:55 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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hi

another graphics glitch

in imerial mahjong

http://www.cpc-power.com/index.php?page=detail&num=13359

screen are too much right align and EGX mode doesn't work

#107650 - 10/16/16 10:21 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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interesting technique there, alternating the higher resolution 4 colour mode with the lower resolution 16 colour mode every scanline to give a weird illusion of both colours and resolutions.. for that type of graphics it kinda works.

presumably needs exact timings.

#107651 - 10/16/16 10:55 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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another probs, is that i can't load no standard dsk like back to the future II

http://www.cpc-power.com/extraZipDownloadPart.php?fiche=344&slot=10&rang=0

is there a file to custom to be capable to read this type of disk ?

#107653 - 10/16/16 07:59 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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Some protected DSK images won't load, probably needs more work since MAME has to convert the image to flux style data.

You could use the HxC utilities which includes an image converter, and convert the DSK image to MFM. This will also give the bonus of the new image being able to be written to.

As for Imperial Mahjong, the screen being offset to the right happens in certain games that use hardware scrolling (like Ghosts 'n Goblins, or Out of this World). I've mentioned it to Judge before, but it is a rather annoying bug.


- Barry Rodewald
#107655 - 10/17/16 09:19 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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hi

thanks, i'll try that asap

is mame capable to read kryoflux ctraw, Stream files or ipf as i have kryoflux hardware and supercard pro scp files ?

perhaps it's on work if not

#107656 - 10/17/16 12:10 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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IPF files should load, although AFAIK the loader was done entirely with Amiga IPF files so Amstrad ones might need some images sent to OG.

#107674 - 10/19/16 12:43 PM Re: cpc 6128 - demo [Re: mahlemiut]  
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Originally Posted By mahlemiut
You could use the HxC utilities which includes an image converter, and convert the DSK image to MFM. This will also give the bonus of the new image being able to be written to.
...Isn't writing back to the image file actually a bad thing, though? As in, it destroys its original state?

#107675 - 10/19/16 02:05 PM Re: cpc 6128 - demo [Re: ICEknight]  
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Originally Posted By ICEknight
Originally Posted By mahlemiut
You could use the HxC utilities which includes an image converter, and convert the DSK image to MFM. This will also give the bonus of the new image being able to be written to.
...Isn't writing back to the image file actually a bad thing, though? As in, it destroys its original state?


HxC is interesting, but doesn't seem amazingly fleixble when it comes to extracting data.

For example, if I have a copy protected disk, and I *know* the sector sizes on the disk are a lie, the software only allows me to load and view the image using the incorrect sizes, I can't tell it to override logic and show me / extract the full sectors ignoring the sizes.

#107676 - 10/19/16 02:39 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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The hxc track viewer is really handy for figuring out the copy protection. I used it while recreating the Tandy 2000 lotus 123 invalid sectors.

#107697 - 10/21/16 05:43 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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hi

i have convert dsk to mfm with hxc as you tell me

http://www.cpc-power.com/extraZipDownloadPart.php?fiche=344&slot=10&rang=0

mess load ok cat work but when i try run"disc i get only a black screen ?

protection is speedlock with track size 6

does mess couldn't handle this type of format ?

Last edited by Breiztiger; 10/21/16 05:43 PM.
#107698 - 10/21/16 05:53 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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It's possible there isn't sufficient data to emulate the copy protection. Does it work on any other emulator?

#107699 - 10/21/16 07:56 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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The DSK Work in all CPC emulator like sugarbox or caprice forever for example

#107757 - 10/27/16 07:09 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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New test demo game

http://cpcrulez.fr/GamesTest/pinball_dreams.htm

Block after level select (with lots of graphics glitch)

#107823 - 11/06/16 09:18 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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sorry but ...

can i take the same effect with hlsl like this Amstrad ctm picture ?

https://mega.nz/#!4c5xkCoY!MwwlNQtN0lCvrftrOM1U91P9QNbrg20PS_AcsXz8ZEA

(it's a nikon raw picture)

Last edited by Breiztiger; 11/06/16 09:59 AM.
#108844 - 02/12/17 10:50 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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hi

i try to use printer like lx800

how can i do that ?

i try mess64 cpc6128f -Centronics lx800

but i only have four led from printer with paper out red and beep

where can i take the result of a printed work ?

thanks in advance

Last edited by Breiztiger; 02/12/17 11:00 AM.
#108848 - 02/12/17 01:18 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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You need to put the printer on line first (it has a button for it) and then it will accept output. However, output is only to the screen and does not scroll.

#109364 - 04/13/17 05:01 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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for test playcity with all voice on !!! (mess64 cpc6128f -flop1 teaser.dsk -exp playcity) ;-)

just a release : http://www.cpcwiki.eu/forum/news-events/arkos-new-production-a-little-teaser!/

but graphics glitch and the screen is not centered ;-(

#110315 - 07/16/17 01:27 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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hi

a fdc bug

with this listing

10 OUT (&FA7E),1:'Motor on
20 FOR i=1 TO 1000:NEXT:'tempo
30 OUT (&7B7F),4
40 OUT (&FB7F),2-peek(&A700)
50 OUT (&FA7E),0:'Motor off
60 status=INP(&FB7F):PRINT status
70 nodisk=status AND 32
80 wrprot=status AND 64
90 IF nodisk=0 THEN PRINT "No disk in drive":END
100 IF wrprot=64 THEN PRINT "disk protected":END

return values on real cpc 6128

122
prot disk
90
no disk
50
ok

Last edited by Breiztiger; 07/16/17 03:16 PM.
#110445 - 07/29/17 02:34 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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when i try to run a dsk on cpc6128 i have this message

Fatal error: Incorrect layout on track 0 head 0, expected_size=100000, current_size=104144

where can i look at for this error

i think dsk layout are not well discribe because my dsk is good for any other emulators

#110446 - 07/29/17 03:50 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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The track layout does not match the format expected by 'dsk_dsk.cpp' (in src\lib\formats)

I had this error with some marginal disks a friend copied over.

You could upload the DSK file for inspection or try to evaluate the 'disc information block' (tracks, sides, size of track).
disc information block

In my case, there was an unexpected extra track because there were traces of an odd, foreign format.

Last edited by Bavarese; 07/29/17 03:52 PM.
#110447 - 07/29/17 03:51 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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a lot of known working CPC disk images don't work with our code, the MAME and will get reject with a fatalerror before even loading. Support for the various copy protection features is incomplete I believe

Last edited by Haze; 07/29/17 03:52 PM.
#110448 - 07/29/17 04:04 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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Also, the usage is unclear for that BASIC program. What is the drive status on each run: disk in, disk out, formatted disk in, unformatted disk in, etc?

#110449 - 07/29/17 04:47 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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I've seen two cases where a dumped image is too large because of invalid sectors wedged into the gaps. They will then work on emulators that aren't picky about track sizes.

#110450 - 07/29/17 04:53 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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are you sure they're invalid sectors, not there because that's how the format represents copy protected tracks? I think they include multiple copies of weak sectors so that the emulator can read a different copy each time and gets different ones if seeking forward / back the first time (unless i'm thinking of a different format)

I know what was meant to be a simple format was extended to support the most common cpc disk protections at least.

Last edited by Haze; 07/29/17 04:54 PM.
#110451 - 07/29/17 05:18 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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hi

it's a proper dump that i have make myself with a kryoflux

it's a edsk format not dsk witch is old and not use today with new dump as a make

i have also create a editor for Amstrad dsk as i can say this dsk is good

just it has all gaps for each sector and the track 0 length is 5805 bytes not only 4608 bytes (9x512)

it is not copy protected just full dump with gaps

Last edited by Breiztiger; 07/29/17 05:20 PM.
#110453 - 07/30/17 09:12 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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There is a hard limit of 100.000 bytes i also encountered:

Code
build_pc_track_mfm(track, side, image, 100000, tr.number_of_sector, sects, tr.gap3_length);


If you just sampled more data than the 'dsk_dsk' routine can handle (no copy protection assumed), it should be possible to cut the gaps (automagically or in a disk editor).

Olivier Galibert is the author of the 'dsk_dsk' importer. Kevin Thacker and Barry Rodewald wrote the Amstrad emulation.

You might have luck contacting Olivier Galibert in your own tongue - or just upload the image so folks can have a look.

[EDIT: to increase the limit is not a good idea. Upload to Dropbox or a good free file hoster and post the link here]

Last edited by Bavarese; 07/30/17 12:06 PM.
#110454 - 07/30/17 10:19 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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i have try to change 100000 to 200000 but not working

https://1drv.ms/f/s!AsnNM-hItJM6ipUvAfhUtZMoMg2zQQ


Last edited by Breiztiger; 07/30/17 01:09 PM.
#110467 - 08/01/17 09:15 AM Re: cpc 6128 - demo [Re: Breiztiger]  
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The disks you uploaded in the previous post had FDC errors and appear to have a very non-standard track layout.
They also utilise increased track densities to cram more data on a floppy than usual.

You can verify that with 'Disk Image Manager' (which is freely available).

To the right (green) is a PD disk i downloaded for verification, with 40 properly formated tracks.

[img]https://www.dropbox.com/s/nf9vyg8lanozhdt/Non_standard_or_copy_protected_disk.jpg?dl=0[/img]

Are you trying to work with a damaged disk - or import a copy protected disk?

The current importer for *.DSK seems a bit ill prepared for density variations. I am by far no CPC expert, though. smile

Last edited by Bavarese; 08/01/17 10:21 AM.
#110470 - 08/01/17 05:51 PM Re: cpc 6128 - demo [Re: Breiztiger]  
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i can confirm that this disk is almost normal

http://www.cpc-power.com/SectorView.php?fiche=1058&slot=10&rang=0 click on map tab

no track density changed

just track 3 is unformat

and protected track is track 4 (sector size 4 but only have 100 bytes length take st1 and st2 number &20 checksum error)

this edsk is a good dump from a working real disk

all cpc emulator like caprice, sugarbox, and other play good with this game (Harry and Harry from ere informatique)


Last edited by Breiztiger; 08/01/17 05:59 PM.
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