Search found 2002 matches

by ijor
Wed Feb 22, 2017 11:01 am
Forum: Professionals
Topic: Where do people dissapear to?
Replies: 10
Views: 581

Re: Where do people dissapear to?

Cyprian wrote:in 2012 Shiraz Shivji sent greetings to the Atari community:
https://youtu.be/Ke-vu1x16UI?t=127


I didn't know. Very nice! Thanks for the link. Just wish he would write some technical background about the design stage of the ST!
by ijor
Tue Feb 21, 2017 11:04 am
Forum: Hardware
Topic: 1040STf & SMD-340 only R/W to it's self ??
Replies: 7
Views: 197

Re: 1040STf & SMD-340 only R/W to it's self ??

Yes, if the problem is specific to the SMD-340 model, then it should happen to all of them. But OTHO, if the problem is alignment, it's unlikely (but of course possible) that it would happen in two of them. It might still be a sub model problem. Many of those drives have multiple minor revisions tha...
by ijor
Mon Feb 20, 2017 1:43 pm
Forum: Professionals
Topic: Where do people dissapear to?
Replies: 10
Views: 581

Re: Where do people dissapear to?

Some are dead. Notably, Jay Miner the main Atari 8-bit and Amiga designer passed years ago. But most indeed moved on. Shiraz Shivji was the ST designer. Never heard too much about him. But probably he is more the low profile guy. Some people like to be in the news all the time, like Nolan Bushnell (...
by ijor
Thu Feb 16, 2017 1:50 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

Nope. No drive will work as you have described, partially because they are designed not to operate without a disk inserted. Only if there is a fault somewhere could this possibly happen ... so I can quite safely say I know what I'm talking about with floppy drives. ... Safe to say, the floppy drive...
by ijor
Wed Feb 15, 2017 1:40 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

My "Scheibenkleister" book mentions that there are drives that behave like you describe -- spinning whenever "motor on" is asserted, regardless of whether a floppy is inserted or not. However, I haven't ever seen one, so I don't think there were really standard in STf(m) machine...
by ijor
Wed Feb 15, 2017 1:20 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

Only the older stf(m) had long button drives, later ones (like my stf) had short button drives. So saying that long button is typical and not the drive shown by exxos is wrong. That wasn't my experience. But I left the ST scene rather early so I might be wrong on that. Anyway ... Older drives, and ...
by ijor
Wed Feb 15, 2017 1:15 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

No properly connected and functioning floppy drive regardless of density, capacity or physical size should spin without a disk inserted. In over 30 years of using floppy drives in many environments on many systems, I have never seen a floppy spin continuously that is set up and working properly. I ...
by ijor
Wed Feb 15, 2017 3:49 am
Forum: CosmosEx
Topic: Debugging issues with STE
Replies: 31
Views: 3556

Re: Debugging issues with STE

Bump .. I'm very curious, rj1. Could you perform more tests on the subject?
by ijor
Wed Feb 15, 2017 3:34 am
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

Regular epson drive as fitted in like 80% of the machines I have seen. That's not the typical STFM drive I've seen. Either you in Europe got more modern drives, or you are including STE machines. The drives I've seen were mostly belt driven with a much more rudimentary board. The one you show it is...
by ijor
Tue Feb 14, 2017 11:16 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

exxos wrote:Have a video as proof that the motor will ONLY turn on when there is a floppy inserted regardless of what TOS is doing. What you are saying is just total nonsense.


But the drive in the video is not an original Atari ST (STFM) drive. Is it?
by ijor
Tue Feb 14, 2017 7:57 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

However if the floppy is ejected the floppy motor should always turn off, If it doesn't then something is wrong somewhere. Same behaviour for DD and HD drives...The only exception I have noticed is with TOS206 on the STE You obviously didn't check what you are claiming. A drive without a disk won't...
by ijor
Mon Feb 13, 2017 10:26 pm
Forum: Hardware
Topic: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?
Replies: 25
Views: 631

Re: Atari 520 STFM Floppy Disk Drive constantly spins - fixable?

It is normal for drives to keep spinning for ever if they are accessed without a disk. This will happen with all Atari drives, doesn't matter button size or single or double sided; and also with most third party ones as long as they are Double Density. High Density drives behave different. Led will ...
by ijor
Wed Jan 25, 2017 9:29 pm
Forum: Hardware
Topic: Help with Atari STf - RGB - Cannot get video/sync
Replies: 77
Views: 5066

Re: Help with Atari STf - RGB - Cannot get video/sync

So I guess a 1.00 to 1.04 wold be a good choice? With all due respect to my friend Christian and others, I beg to differ a little with the recommendation. I used (and still use) TOS 1.0 with hard disk for years without any problems. Yes, it is buggy and it's not the fastest, but with the right driv...
by ijor
Tue Jan 24, 2017 1:39 pm
Forum: C / PASCAL etc.
Topic: Megamax Laser C Development System manual
Replies: 7
Views: 555

Re: Megamax Laser C Development System manual

I think I only used 1.0 back at the day. Yes, the relative mode addressing that Megamax used, but not Laser C, was great. But Laser C was so much powerful as a whole, that I didn't miss it. And the absolute mode allowed to break you the 32K barrier that was the main Megamax limitation. Of course, th...
by ijor
Fri Jan 20, 2017 11:56 am
Forum: Website Discussions
Topic: using external floppy disc drive to tranfer
Replies: 9
Views: 630

Re: using external floppy disc drive to tranfer

the Desktop format option formats disks DOS compatable. I've been using this method for years and never had any issues. This depends on the TOS version. The desktop format on older TOS versions is not fully PC compatible. But there are many alternate formatters available. If we are talking about an...
by ijor
Thu Jan 12, 2017 2:58 am
Forum: Hardware
Topic: 520STfm with 20 bombs
Replies: 7
Views: 555

Re: 520STfm with 20 bombs

Doesn't sound as being a BERR/DTACK problem. I would expect that if some component doesn't respond, it would be much earlier than after 22 seconds. Note that what you describe is not exactly a completely dead unit. You get a (more or less) correct display. This means that the CPU, GLUE, MMU, SHIFTER...
by ijor
Wed Jan 11, 2017 9:12 pm
Forum: Applications
Topic: PaintPro by Abacus Software, dump anyone?
Replies: 14
Views: 952

Re: PaintPro by Abacus Software, dump anyone?

Marko, do you have a Pasti image?
by ijor
Wed Jan 11, 2017 9:04 pm
Forum: Hardware
Topic: Floppy Disk Readers fails at sectors 81 & 82
Replies: 5
Views: 561

Re: Floppy Disk Readers fails at sectors 81 & 82

Just be aware that the quoted note in the Service Manual is not completely true. Some titles use those tracks just for extra storage, not necessarily for copy protection. And they are sometimes used also by home made disks. If your drives can read/write to track 80, and they fail only on tracks 81 &...
by ijor
Mon Jan 09, 2017 1:11 pm
Forum: CosmosEx
Topic: Debugging issues with STE
Replies: 31
Views: 3556

Re: Debugging issues with STE

Then I tested 74HCT244 instead of original 74LS244 and it works again (a combination of original 74LS245 for data + a new 74HCT244 for control signals). Interestingly 74F244 I had fails to work. Even more puzzling? LOL In first place, if the problem is indeed related to the '244 buffer, then the pr...
by ijor
Sun Jan 08, 2017 1:21 pm
Forum: Hardware
Topic: 1040STe, PS working, LEDs off -- what next?
Replies: 20
Views: 898

Re: 1040STe, PS working, LEDs off -- what next?

Well that's the problem, I don't have a TV currently, I only have a couple of Commodore monitors :D Hence my posting here in the first place... I have a hunch it's something simple and I'm tempted to buy some old Atari monitor for this. But maybe I'll check at someone's TV first. So far I measured ...
by ijor
Sun Jan 08, 2017 3:29 am
Forum: CosmosEx
Topic: Debugging issues with STE
Replies: 31
Views: 3556

Re: Debugging issues with STE

On the other hand, I'm now running tests with both '244 and '245 buffers removed so it resembles ST/Mega configuration now (inputs/outputs shorted). It looks promising - no errors so far with 4.6V supply level, that's the lowest this Mitsumi PSU can go. Before I had to set at least 5.05V for error ...
by ijor
Sat Jan 07, 2017 9:31 pm
Forum: Kryoflux
Topic: News games checked.
Replies: 47
Views: 4341

Re: News games checked.

The purpose is to prove "an unmodified disk not equal to an authentic copy". I definitely agree with that. You know, it is not much different that authenticating such things as paintings, coins or stamps. A topic which I have some knowledge and relation. Experts on those use to say that y...
by ijor
Sat Jan 07, 2017 12:07 pm
Forum: Kryoflux
Topic: News games checked.
Replies: 47
Views: 4341

Re: News games checked.

Re: Pirate copies made with a Trace Duplicator. It is easy to perceive the reason. They developed and sold their own games/apps, so that machine is needed for them. In addition, they are also agents of games/apps developed by other corporations. They should paid more money to other corporations if t...
by ijor
Thu Jan 05, 2017 1:28 pm
Forum: Kryoflux
Topic: News games checked.
Replies: 47
Views: 4341

Re: News games checked.

JimDrew wrote:There is at least one eBay seller offering a ton of what appears to be original Amiga disks that are copies created on a Mountain Computing (TRACE) machine ...


How do you know they were created on a Trace duplicator and not on some other hardware?
by ijor
Thu Jan 05, 2017 1:27 pm
Forum: Kryoflux
Topic: News games checked.
Replies: 47
Views: 4341

Re: News games checked.

The uploaded SCP dump can be converted to plain .IMG diskimages which work with DOSBox. But no matter what answer you select, it always says "Right". So I think that version is pre-cracked. ... I have the un-cracked version... I see. It is indeed very suspicious. There are some known case...

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