Search found 221 matches

by GokMasE
Tue Oct 15, 2019 1:20 pm
Forum: Website Discussions
Topic: Editing a message
Replies: 93
Views: 6609

Re: Editing a message

And really, who cares about spelling so much that he seriously edits month old posts??? For me, i could life with that. Certainly i'm not going to edit month old messages just for typos. If additionaly, https://www.phpbb.com/customise/db/exte ... tpostedit/ had been implemented, i might even have a...
by GokMasE
Mon Oct 14, 2019 4:39 pm
Forum: Website Discussions
Topic: Editing a message
Replies: 93
Views: 6609

Re: Editing a message

Maybe someone of the admins should take a look at https://www.phpbb.com/customise/db/extension/gn36_firstpostedit/ I think that could solve at least some of the problems. Yes! That would be a perfect trade-off between unlimited editing and our wish to be able to edit the first post, but unfortunate...
by GokMasE
Sat Oct 12, 2019 11:08 pm
Forum: Website Discussions
Topic: Editing a message
Replies: 93
Views: 6609

Re: Editing a message

In essence, you are terminating an appreciated and frequently used feature, to prevent something that has happened.. ..never..?

This does not compute.
by GokMasE
Sun Aug 18, 2019 11:43 pm
Forum: Hardware
Topic: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation
Replies: 11
Views: 1783

Re: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation

Logic says that the Schottky diode (with a lower volts drop - 0.1V as against 0.6V for a normal silicon diode like the 1N4148) is actually the better choice Ok, noted. Then the only thing left to play with is the capacitor. In the versions of SCART RGB => ST cable that was suggested by Ian Stedman ...
by GokMasE
Sun Aug 18, 2019 10:31 pm
Forum: Hardware
Topic: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation
Replies: 11
Views: 1783

Re: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation

Quite update #2:

Connecting more of the GND pins on the SCART connector did not change anything.
The flickering is seemingly within individual scan lines, so perhaps the switching time of the diode is a factor here?

I will replace the Schottky diode with the suggested 1N4148 diode next.
by GokMasE
Sat Aug 17, 2019 10:04 pm
Forum: Hardware
Topic: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation
Replies: 11
Views: 1783

Re: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation

Quick update: I did try it on my TV (not a Sony though) and while the previous "bouncing" was completely gone, I instead got slight disturbance/flickering inside the picture every 2-3 seconds. That is, the picture frame does not move, but there a small cluster of flickering on screen, poss...
by GokMasE
Sat Aug 17, 2019 6:51 pm
Forum: News & Announcements
Topic: Good bye
Replies: 64
Views: 6866

Re: Good bye

Uhh, but what we do is like the diametric opposite of clinging on to outdated data? Any user is welcome to suggest updates to the data on our site. Rajah in fact has made such suggestions and we happily accepted those. I was quite obviously referring to this particular case rather than how things a...
by GokMasE
Sat Aug 17, 2019 1:07 pm
Forum: News & Announcements
Topic: Good bye
Replies: 64
Views: 6866

Re: Good bye

While I don't understand Rajah's strong feelings regarding having outdated information on his apps listed on certain websites, I find it even harder to understand why those in charge of these websites find it so important to cling on to outdated data out of principle. There appears to be some kind o...
by GokMasE
Thu Aug 15, 2019 1:04 pm
Forum: Hardware
Topic: Floppy drive replacement (expanding the theme).
Replies: 40
Views: 5176

Re: Floppy drive replacement (expanding the theme).

I modelled this in Sketchup a couple of years ago: MPF920-ST.png It's a bezel and ejectbutton for the popular (and good!) Sony MPF920. Unfortunately it's not quite finished, needs a bit of adjustment to fit correctly in the ST case. Can the Sketchup original or STL/GX files be downloaded somewhere?...
by GokMasE
Mon Aug 05, 2019 12:28 pm
Forum: Hardware
Topic: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation
Replies: 11
Views: 1783

Re: Screen sometimes going momentarily black when using a RGB->SCART cable - An attempt of an explanation

Thanks for the detailed explanation Christian. Maybe this should be promotoed to FAQ status officially? In STe the HSync & VSync also have a 33R series resistor. Whats more, the diode introduces further voltage drop out. It should be Shottky diode to ensure minimal voltage drop. 1N4148 is not id...
by GokMasE
Sat Aug 03, 2019 11:32 pm
Forum: Hardware
Topic: PSU restoring; Recapping all my Atari PSUs
Replies: 9
Views: 1384

Re: PSU restoring; PSM-5341 choked on dummy load

Ok, interesting development: It turns out that the full recap in fact *DID* fix the problem - but after being equipped with all new capacitors, it seems the Noctua fan poses a too small load for the PSU to even start up. After the PSU broke down when being exposed to the dummy load, I didn't want to...
by GokMasE
Sat Aug 03, 2019 9:47 am
Forum: Hardware
Topic: PSU restoring; Recapping all my Atari PSUs
Replies: 9
Views: 1384

Re: PSU restoring; PSM-5341 choked on dummy load

How old is the fan? Have you tested the fan on a known working PSU? The fan is a brand new Noctua (it has been installed in the TT, and have a few hours of running time). The PSU including the fan was thus tested and working up til the time of the dummy load test. I can try and power the fan from a...
by GokMasE
Sat Aug 03, 2019 12:15 am
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

I do notice that the screen takes a vertical "jump" every 6-8th seconds or so. My guess would be that it is the RGB mode signal on SCART pin#16 that is not up to par. My aim is to add at least the capacitor that is recommended in this example: Atari_SCART_cable_V1.1.png I'll probably add t...
by GokMasE
Sat Aug 03, 2019 12:04 am
Forum: Hardware
Topic: PSU restoring; Recapping all my Atari PSUs
Replies: 9
Views: 1384

Re: PSU restoring; PSM-5341 choked on dummy load

Ok, the 2 Mitsumi PSUs are both confirmed working and currently powering an STe and an STfm respectively. The ASP34-2 is successfully powering an STf, so the recap project has had an awesome start. However, the restoring TT PSU (PSM-5341) has not turned out well so far. I was curious of its performa...
by GokMasE
Fri Aug 02, 2019 10:04 am
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

Ah, it's annoying when your TV / Display doesn't allow you to force selection of Composite / RGB input mode from within the set's menus. In those cases the default SCART input mode is always Composite, and you have to force selection of RGB mode by supplying a voltage input to SCART pin 16 on the T...
by GokMasE
Fri Aug 02, 2019 12:15 am
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

I couldn't work out how to set the input to composite to RGB, so I decided to search for problems with the RGB-Scart cable instead. And it seemed this cable was one of the unusual cables - there was nothing sent from the pin#2 on the Atari side, which is the composite sync signal, the V-sync signal ...
by GokMasE
Wed Jul 31, 2019 10:00 pm
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

With regard to video, yes, that was where I was going with that particular question. One possibility is that the machine is stuck in mono mode due to a fault on the 'monitor type' sensing input on the ST's video-out socket. There's an easy way to determine if this is the case. With the mono monitor...
by GokMasE
Wed Jul 31, 2019 8:19 am
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

In the meantime maybe you can give us a little more information - what sort of video-out connection are you using? From your picture I guess composite or RGB, possibly a UHF RF connection if that display in your picture is actually a TV. Your question regarding video-out connection, together with t...
by GokMasE
Tue Jul 30, 2019 10:12 pm
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

However, you first need to get back to where you were before, then maybe you can progress from there. Ok, mission #1 accomplished - I am now back to the grey screen + floppy activity again! You were right in suspecting I had made a mistake when reseating, one of the TOS ROMS had one pin bent. :oops...
by GokMasE
Tue Jul 30, 2019 6:55 pm
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

Unfortunately I feel your change of symptoms after reseating / reinserting ICs may indicate that something has changed for the worse. However, since you made that happen you should be able to make it un-happen just as easily, as long as you have not done something really unlucky, such as putting on...
by GokMasE
Tue Jul 30, 2019 9:27 am
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

Re: 1040STfm boot failure -> white screen/stripes

Certainly not, but it is *THAT* easy to miss one particular post when searching for certain signs, like the screen pattern. Also fact that in my case the actual symptoms changed after reseating chipsets is something I figured would hold clues. Will of course look into the details of the linked threa...
by GokMasE
Mon Jul 29, 2019 11:26 pm
Forum: Hardware
Topic: 1040STfm boot failure -> white screen/stripes [solved]
Replies: 21
Views: 2359

1040STfm boot failure -> white screen/stripes [solved]

Hi, I am trying to bring back an old STfm to life (given to me years and years ago, but only tested now after proper PSU-recap). First time I powered it on, I got to a grey screen and there was repeated floppy activity. Both power LED and disk LED was lit. After that, nothing more would happen. I wa...
by GokMasE
Sat Jul 27, 2019 1:35 pm
Forum: Hardware
Topic: PSU restoring; Recapping all my Atari PSUs
Replies: 9
Views: 1384

Re: PSU restoring; 12v rail too low!

Hi, Many thanks for the reply and your insight on the subject. It is quite interesting that the specs would allow for as little as 10.8v, but I can only assume that even a mechanical floppy drive could function happily with that then. All things considered, the values after trimming the potentiomete...
by GokMasE
Sat Jul 27, 2019 12:23 pm
Forum: Hardware
Topic: PSU restoring; Recapping all my Atari PSUs
Replies: 9
Views: 1384

PSU restoring; Recapping all my Atari PSUs

Hiya, I recently started a project to restore the PSUs of my Atari computers to their former glory. Before doing anything else, I have been cleaning up the PCBs, checking for bad solder joints and replacing all electrolytic capacitors. The PSUs I am fixing up are: 2 x Mitsumi SR-98 (DONE) (tested OK...
by GokMasE
Sun Jul 21, 2019 7:09 pm
Forum: GFA BASIC
Topic: GFABASIC killing the environment
Replies: 29
Views: 2802

Re: GFABASIC killing the environment

Regarding the reference to HIMEM, I believe that was a feature that changed during later development. Did you check out the internal data table accessed through SYSTAB? (see gbe_lib.hyp) Not sure this is what you are looking for but SYSTAB+80 returns the address to a string reflecting the cpu build ...

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