Search found 165 matches

by tzok
Fri Jul 10, 2020 8:01 pm
Forum: PSU (power supplies)
Topic: How to remove 1040STE power supply?
Replies: 10
Views: 96

Re: How to remove 1040STE power supply?

There were different shielding configurations in the STe... not all had the PSU screwed to the rear shielding plate.
by tzok
Wed Jul 01, 2020 11:51 pm
Forum: HARDWARE ISSUES
Topic: RGB SCART - ARGHHH
Replies: 19
Views: 361

Re: RGB SCART - ARGHHH

At the TV, pin 8 has a few kOhms, while blanking input (pin 16) is terminated with 75 Ohm resistor.
by tzok
Sun Jun 28, 2020 9:53 pm
Forum: HARDWARE ISSUES
Topic: RGB SCART - ARGHHH
Replies: 19
Views: 361

Re: RGB SCART - ARGHHH

Diode and capacitor are needed, because this input has 75 ohm impedance on the TV side, so you can't use 12V out from ST and a resistor divider (actually from the ST you can, but not from STe*), and it needs to be about 2 VDC voltage. VSync obviously is not a DC, and some TVs can switch between comp...
by tzok
Fri Jun 26, 2020 5:20 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: STF upgrades plan for 2021
Replies: 11
Views: 973

Re: STF upgrades plan for 2021

...so maybe you could consider moving abandoned projects to the Public Domain?
by tzok
Sat Jun 20, 2020 9:39 pm
Forum: HARDWARE ISSUES
Topic: Atari STE - Issues with power connector (J302)
Replies: 19
Views: 432

Re: Atari STE - Issues with power connector (J302)

Yet, computer should boot just fine, without it.
by tzok
Sat Jun 20, 2020 10:33 am
Forum: HARDWARE ISSUES
Topic: Atari STE - Issues with power connector (J302)
Replies: 19
Views: 432

Re: Atari STE - Issues with power connector (J302)

STe should boot just fine without 12V. STe floppies used in STes don't use it, and even if you'd cut it completely off from the PSU, just the composite video/TV out would be non-functional.
by tzok
Wed Jun 03, 2020 7:07 pm
Forum: HARDWARE ESSENTIALS
Topic: Reference Photographs
Replies: 7
Views: 1144

Re: Reference Photographs

My keyboards also have only one dome under Return key. I think someone had previously "been there", and thought that he had lost one, so he got one extra from eBay, and put it there ;)
by tzok
Tue May 26, 2020 8:56 pm
Forum: ALPHA DEVELOPMENT INFO
Topic: STFM Keyboard Remake
Replies: 38
Views: 10682

Re: STFM Keyboard Remake

Any chances that key caps models will be published on Thingiverse anytime soon? Even as a WIP project?
by tzok
Fri May 22, 2020 9:47 pm
Forum: MEMBER BLOGS
Topic: Learning CPLD and testing GALs
Replies: 16
Views: 782

Re: Learning CPLD and testing GALs

I didn't mean the time stamps, but completely different fuse map. If you mess too much with the code in editor, and compile just after editing, it is likely, that compiler will output garbage.

Another advantage of Opal Jr is, that it allows to convert JED back to EQN (decompile).
by tzok
Thu May 21, 2020 11:58 pm
Forum: MEMBER BLOGS
Topic: Learning CPLD and testing GALs
Replies: 16
Views: 782

Re: Learning CPLD and testing GALs

So I've got WinCPLD loaded up on my Windoze laptop and am going to learn CPLD programming. If you've meant WinCUPL, then throw it away. It is horrible. If you want to use more modern CPLDs, then go for Quartus, if you need GALs, then I recommend you to use Opal Jr. It is DOS based, but runs fine un...

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