Search found 503 matches

by czietz
Sun Jan 21, 2018 7:14 pm
Forum: News & Announcements
Topic: What hapened to atariforge? dev-docs moved.
Replies: 26
Views: 1348

Re: What hapened to atariforge? dev-docs moved.

Before exxos removes it, here's his statement on this issue: I also added the site was a mirror to prevent confusion . Site seemed to be working fine at that point. Thanks - it seems a lot of comments here are simply wrong then. Well, he only added that shortly before then deciding to take down the...
by czietz
Sat Jan 20, 2018 10:38 pm
Forum: MIDI Software and Hardware
Topic: C-Lab Export: unidentified IC
Replies: 15
Views: 260

Re: C-Lab Export: unidentified IC

I'm also mystified by R7 - a 47K resistor from output Y7 to Vcc. Y7 is already at logic high, and it isn't used by anything. It appears to be a complete waste of a resistor! Notice that Fujiyama's photos show that the PCB would also accept a PDIP-20 package; thus a different IC. Maybe the resistor ...
by czietz
Sat Jan 20, 2018 1:44 pm
Forum: Hardware
Topic: STE with no signs of life
Replies: 5
Views: 147

Re: STE with no signs of life

The STE has the ability to switch to an external clock input altogether, iirc by grounding pin 3 on the monitor connector. Maybe check for shorts on the resoldered connectors.
by czietz
Fri Jan 19, 2018 7:11 am
Forum: MIDI Software and Hardware
Topic: C-Lab Export: unidentified IC
Replies: 15
Views: 260

Re: C-Lab Export: unidentified IC

The fact that the IC looks like the part number etc. were stamped onto it with white ink makes it indeed more likely that this is a relabeled part. You could draw the schematic from the photo -- easy, as it's just a single sided board -- and see for yourself if a 74138 would fit.
by czietz
Wed Jan 17, 2018 8:13 pm
Forum: Hardware
Topic: BAD DMA - Myth or fact ?
Replies: 83
Views: 25546

Re: BAD DMA - Myth or fact ?

I've been thinking that may be, may be, Jeff is right when he mentioned that the CMOS part might be not 100% compatible. There are a couple of undocumented issues on the 68000 that conceivable might behave different. Out of curiosity: can you provide more details -- or a link? I was also thinking o...
by czietz
Mon Jan 15, 2018 10:13 pm
Forum: Hardware
Topic: Solution for higher resolutions on STE?
Replies: 68
Views: 7787

Re: Solution for higher resolutions on STE?

Considering that 1st1 is a big fan of the Vamp---ahem, "card that must not be named"--- one can indeed take a guess. :-D Anyway, even if that card was available anytime soon, your questions would still be relevant. I cannot say about Notator in particular, but cleanly written GEM software ...
by czietz
Mon Jan 15, 2018 9:24 pm
Forum: Chat forum [ENG]
Topic: Surviving STs
Replies: 23
Views: 889

Re: Surviving STs

That seems pretty reasonable. Any idea how much MegaSTEs are going for? MegaSTEs are much more rare and thus more expensive here as well. I bid on some MegaSTEs on eBay Germany last year, albeit unsuccessfully. The ones I bid on sold for about 200 - 250 €. TTs and Falcons appear even less often on ...
by czietz
Mon Jan 15, 2018 7:51 pm
Forum: Chat forum [ENG]
Topic: Surviving STs
Replies: 23
Views: 889

Re: Surviving STs

I really can't fathom why. I can only suppose two things. Either not many STs have survived for some reason. Or musicians have snapped up all surviving machines and are commanding a premium for them. Maybe you live in the wrong country. :wink: I had a look at German eBay listings. I'd say, on avera...
by czietz
Fri Jan 12, 2018 7:37 pm
Forum: Hardware
Topic: FlashFloppy vs HxC
Replies: 15
Views: 858

Re: FlashFloppy vs HxC

simonsunnyboy wrote:If HFE is fine, it is not much of a problem.


HFE works fine for the HxC firmware. I don't know if FF can handle HFE files with 11 spt, though.
by czietz
Fri Jan 12, 2018 4:39 pm
Forum: Hardware
Topic: FlashFloppy vs HxC
Replies: 15
Views: 858

Re: FlashFloppy vs HxC

11 tracks..is this a generic limitation to .hfe files aswell? Or limited to direct .st images in case of the FlashFlopy firmware? First of all: 11 sectors per track. Note that Jeff did not write that 11 sectors was the limit. See my 18 sectors per track DD(sic!) HFE image on: https://www.chzsoft.de...
by czietz
Sun Jan 07, 2018 3:15 pm
Forum: Chat forum [ENG]
Topic: Any user from Hungary that can help me buying from a Hungarian web shop?
Replies: 1
Views: 221

Any user from Hungary that can help me buying from a Hungarian web shop?

Hi, is there any forum user from Hungary that is willing to help me buying (some Atari-related parts) from a web shop in Hungary? The shop only accepts delivery addresses in Hungary. I asked them -- in English, since I don't speak any Hungarian -- whether they would still deliver to Germany at an ad...
by czietz
Sat Jan 06, 2018 7:15 pm
Forum: 680x0
Topic: Boot sector and memory crushing
Replies: 20
Views: 893

Re: Boot sector and memory crushing

Shouldn't this be...

Code: Select all

pea filename(pc)


etc.?
by czietz
Sat Jan 06, 2018 6:39 pm
Forum: Demos - General
Topic: Atari Links
Replies: 59
Views: 132896

Re: Atari Links

Mister DID wrote:Atari Documentation Archive -> http://dev-docs.atariforge.org is down


Actually, it just moved to a new server and domain name: http://www.dev-docs.org
by czietz
Sat Jan 06, 2018 5:16 pm
Forum: Hardware
Topic: c302020-020B ...which TOS ?
Replies: 9
Views: 609

Re: c302020-020B ...which TOS ?

Assuming that $8D31 and $0B76 are the checksums of the ROMs, you have a standard TOS 2.05 (UK version). Those two values match the checksums of the official TOS 2.05 UK release. If you still suspect that you have something special, then why don't you dump TOS into a file and compare it to a TOS ROM ...
by czietz
Sat Jan 06, 2018 3:54 pm
Forum: Hardware
Topic: LA traces on interesting video signals
Replies: 27
Views: 926

Re: LA traces on interesting video signals

For cases 1 & 2 - BLANK is connected to pin 1 of the Shifter (XTL0). Since my Mega ST has the C025914 Shifter I had to go find it easily accessible at one end of the D9-D11 diodes instead. I'm actually unsure, looking quickly at the diagrams, how BLANK is working on this Shifter revision. Which...
by czietz
Fri Jan 05, 2018 5:27 pm
Forum: Chat forum [ENG]
Topic: Climatics hangLoose down ???
Replies: 1
Views: 256

Re: Climatics hangLoose down ???

Yeah, it was already down mid-December. Maybe you can try to contact "bandid"?
by czietz
Thu Dec 28, 2017 2:15 pm
Forum: Hardware
Topic: MEGAFILE 60 disk capacity issue
Replies: 13
Views: 850

Re: MEGAFILE 60 disk capacity issue

Bad track list remains the same, because it does not contain sector numbers, only tracks and heads. This is not exactly true; the defect list printed on my MFM HD also contains the location of the defect in "bytes from index mark" (BFI). If I were to format it with RLL, I suppose I would ...
by czietz
Tue Dec 26, 2017 12:43 pm
Forum: Applications
Topic: A small request...Geneva
Replies: 15
Views: 1526

Re: A small request...Geneva

Tested in v0.9.9.1 - also getting errors. Screencap in the attachment for anyone interested. Thank you for testing and reporting the crash using EmuTOS. I can look at it if you want. Though, to make it easier for me, I'd appreciate it if you could provide me a fast way to reproduce the error, i.e. ...
by czietz
Sun Dec 24, 2017 6:19 pm
Forum: Other BASIC
Topic: Omikron basic 3.5 english text of manual
Replies: 6
Views: 318

Re: Omikron basic 3.5 english text of manual

not that anyone uses omikron except myself and rockyone. Oh, I use Omikron Basic as well, though mostly the 3.0 interpreter that came on Atari's Language Disk. Nonetheless, the 3.5 manual is interesting, because there are some commands already present in 3.0 but undocumented that are however explai...
by czietz
Sun Dec 24, 2017 10:47 am
Forum: Hardware
Topic: New RAM testing program
Replies: 22
Views: 11300

Re: New RAM testing program

As you have already pointed out, it's always the same bit that is affected, more specifically the most significant bit, i.e. data bit 15 (D15). The ST (usually) has an individual RAM chip for each bit of data, so the one for D15 would be my first suspect. In the schematic you posted this is U45. Not...
by czietz
Sun Dec 24, 2017 9:01 am
Forum: MiST
Topic: Can't find a US 2.06 TOS image
Replies: 17
Views: 1152

Re: Can't find a US 2.06 TOS image

They all show 262KB on my Mac when they are unzipped. That's because Apple correctly (but maybe confusingly) uses SI unit prefixes. A file that is roughly 262000 bytes long will show up as 262 kilobytes. Whereas when there is talk about 256kB Atari ROMs, these are what the IEC wants to call kibibyt...
by czietz
Fri Dec 22, 2017 1:17 pm
Forum: News & Announcements
Topic: JACKINGTOS SITE?
Replies: 5
Views: 1155

Re: JACKINGTOS SITE?

It's not being mirrored, these are just two domains pointing to the exact same server, both registered by Dal for many years now.
Why is this ALL-CAPS-worthy?
by czietz
Tue Dec 19, 2017 5:45 pm
Forum: Hardware
Topic: I borked my 520ST Help?!?
Replies: 13
Views: 594

Re: I borked my 520ST Help?!?

Service manual is here: http://www.dev-docs.org/docs/files/Atari%20520ST%201040ST%20Service%20Manual.pdf The troubleshooting procedures described there do however assume that you have access to some equipment: oscilloscope (or logic analyzer) and optimally a diagnostic cartridge. You have a color mo...
by czietz
Wed Dec 13, 2017 1:23 pm
Forum: 680x0
Topic: 68000 weird out of order reads?
Replies: 9
Views: 736

Re: 68000 weird out of order reads?

How the 68000 does its prefetch is explained in this detailed article by ijor: http://pasti.fxatari.com/68kdocs/68kPrefetch.html Probably the most comprehensive guide about the bus cycles done by each instruction is Yacht.txt: https://github.com/larsbrinkhoff/m68k-microcode/blob/master/doc/Yacht.txt...
by czietz
Tue Dec 12, 2017 9:29 pm
Forum: News & Announcements
Topic: EmuTOS 0.9.9
Replies: 131
Views: 5095

Re: EmuTOS 0.9.9

I wonder if in all this minutia the important points about the release get overlooked?

For example, see the initial announcement: VDI: Add blitter support. This was one of the most highly requested features by many users. How come no one commented on that?

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