Search found 449 matches

by mpattonm
Wed Feb 12, 2020 10:37 pm
Forum: Hardware
Topic: Faulty FM (was STFM RAM Capacitor value? Suggestions?)
Replies: 20
Views: 753

Re: Faulty FM (was STFM RAM Capacitor value? Suggestions?)

I do not have readable schematic nor open STFM on hand, but you can check value on th RP package. If you see 472 printed on it, thats right value. But yes, 4k7 is most likely right.
by mpattonm
Tue Feb 11, 2020 7:18 pm
Forum: Hardware
Topic: Faulty FM (was STFM RAM Capacitor value? Suggestions?)
Replies: 20
Views: 753

Re: STFM RAM Capacitor value? Suggestions?

As someone has been messing with it before, might some tracks around TOS might be damaged? Assuming you have checked TOS chips are correct and in correct possitions, I would also suggest to measure these two resistor packs next to TOS sockets. Sometimes, one or two resistors inside fail. And as they...
by mpattonm
Mon Feb 10, 2020 8:16 am
Forum: Coding
Topic: falcon printer port ACK and select
Replies: 3
Views: 280

Re: falcon printer port ACK and select

I am no expert here, but from what I understand, YM-3439 used in Falcon is just CMOS version of YM2149 in a QFP packaging. And if this is true, both interface ports are nothing but generic I/O that can be set to to both input and output mode via its register setting. At least this is what datasheet ...
by mpattonm
Sun Feb 09, 2020 9:27 pm
Forum: Professionals
Topic: Falcon Mod Resurrection.
Replies: 53
Views: 12574

Re: Falcon Mod Resurrection.

Again, sorry if this has been answered, but did you also check TOS EPROM chip? Is it still readable, and is the chip properly seated and correctly oriented in the socket? This is another thing to check, as it gives exactly same sympthoms: no video, no response from diag cart even over serial.
by mpattonm
Thu Feb 06, 2020 8:10 pm
Forum: Hardware
Topic: 520ST keyboard to USB adapter?
Replies: 5
Views: 358

Re: 520ST keyboard to USB adapter?

Check this thread out: viewtopic.php?f=15&t=17879
Interesting part begins at around page 16
by mpattonm
Sat Feb 01, 2020 11:31 am
Forum: Hardware
Topic: Falcon floppy drive connector broken
Replies: 6
Views: 375

Re: Falcon floppy drive connector broken

joska wrote:Don't do this yourself.

^^^^^^
THIS.
by mpattonm
Fri Jan 31, 2020 10:14 pm
Forum: CT60 / CT63 Area
Topic: New SuperVidel & some ideas for future development.
Replies: 105
Views: 41968

Re: New SuperVidel & some ideas for future development.

sety wrote:Would there be enough interest to crowd-source the funds required to buy the production files and rights from the current owner and put them in the open source community where they belong?

I will certainly put some money in it. But please, talk to Nature.
by mpattonm
Fri Jan 31, 2020 10:12 pm
Forum: Hardware
Topic: Falcon sound issue.
Replies: 1
Views: 209

Re: Falcon sound issue.

?? Why do you post the same question?
viewtopic.php?f=15&t=38201&p=391185#p391185
by mpattonm
Wed Jan 29, 2020 5:27 pm
Forum: Hardware
Topic: Reset Button MegaSTE
Replies: 5
Views: 556

Re: Reset Button MegaSTE

Xerus wrote:Do you still have NVRAM/RTC replacement module for Falcon030?

Yes, its on stock. Check out the store for more goodies too.
by mpattonm
Tue Jan 28, 2020 10:57 pm
Forum: CT60 / CT63 Area
Topic: New SuperVidel & some ideas for future development.
Replies: 105
Views: 41968

Re: New SuperVidel & some ideas for future development.

If I may suggest, try to talk to Nature team, perhaps they would eventually agree to release their design files to public. I know instream, who is by the way following this topic as far as I know, is a very pleasant person to talk to.
by mpattonm
Sat Jan 25, 2020 5:47 pm
Forum: Hardware
Topic: Reset Button MegaSTE
Replies: 5
Views: 556

Re: Reset Button MegaSTE

It will. In case you will want to assemble it later on, you can get replacement here: https://centuriontech.eu/product/reset_sw/
by mpattonm
Fri Jan 24, 2020 12:18 pm
Forum: Professionals
Topic: Falcon Mod Resurrection.
Replies: 53
Views: 12574

Re: Falcon Mod Resurrection.

So to check the GALs?? I am pulling them.. putting them in an Eprom reader/burner and seeing if I can read them ok???? James Exactly that. And as you do this, it might be worth to check TOS chip as well. COMBEL replacement should only be done when you know for sure it is faulty. Before you do, have...
by mpattonm
Thu Jan 23, 2020 8:27 am
Forum: Professionals
Topic: Falcon Mod Resurrection.
Replies: 53
Views: 12574

Re: Falcon Mod Resurrection.

by mpattonm
Sun Jan 19, 2020 8:59 am
Forum: Professionals
Topic: Falcon Mod Resurrection.
Replies: 53
Views: 12574

Re: Falcon Mod Resurrection.

Yes, you can test to boot with Dallas removed first, actually.
by mpattonm
Thu Jan 16, 2020 7:58 am
Forum: Professionals
Topic: Falcon Mod Resurrection.
Replies: 53
Views: 12574

Re: Falcon Mod Resurrection.

I must admit I read the thread. But honestly, I am completely lost on what current situation is and what have been done to remedy it, so I did not dare to give any advice here. But seeing how long this takes, I can tell you what I would do: I would carefully revert the unit to stock state - i.e. rem...
by mpattonm
Mon Jan 13, 2020 8:56 pm
Forum: Hardware
Topic: Falcon sound issue.
Replies: 1
Views: 1227

Re: Falcon sound issue.

Is the same distortion coming off the internal speaker too? Check 12V and esp. 9V (incl. HVCC) @ U21-U23. Use the sine wave generator to feed input pins of U22/U23 while checking output. Or even better, plug the generator to the output pins of codec (U28) to rule out failure if inline filter caps C1...
by mpattonm
Thu Jan 09, 2020 12:42 pm
Forum: For sale / Wanted
Topic: WANTED - C061618
Replies: 2
Views: 472

Re: WANTED - C061618

Hmm what IC is it by the way? Number does not ring the bell.
NWM, found it. I do not keep one, sadly.
by mpattonm
Wed Jan 08, 2020 9:13 pm
Forum: Coding
Topic: Mr Boom (bomberman) Falcon 60 source code
Replies: 13
Views: 1967

Re: Mr Boom (bomberman) Falcon 60 source code

rmd wrote:Hi guys,
I just pushed the source code from the Falcon 60 port of a bomberman clone I presented at silly venture: https://github.com/Javanaise/mrboom-libretro

Thanks for your work!
by mpattonm
Tue Dec 31, 2019 8:05 pm
Forum: Hardware
Topic: ST power switch
Replies: 3
Views: 739

Re: ST power switch

tzok wrote:Maybe this could fit:
https://www.calonix.net/power%20models.html

Seems like this could be the one! Thank you.
by mpattonm
Tue Dec 31, 2019 12:54 pm
Forum: Hardware
Topic: ST power switch
Replies: 3
Views: 739

ST power switch

Does anyone know a reliable source for new ST power switches as made by OTAX, or their 1:1 replacements?
Edit: I mean AC power switch on models with internal PSU (F/FM...)
by mpattonm
Sun Dec 29, 2019 7:23 pm
Forum: News & Announcements
Topic: New Internal Falcon PSU for CT60, CT60e, CT63...
Replies: 38
Views: 25274

Re: New Internal Falcon PSU for CT60, CT60e, CT63...

Well I have decided to take a break from all the Amiga stuff (very exhausting), I have took a time to try something else on this topic and voilá: ladies and gentleman, I present you what I believe is perfect internal PSU option for CT60 equipped Falcon. Yes, it is running in 060 mode ;) WP_20191229_...
by mpattonm
Sun Dec 29, 2019 6:05 pm
Forum: Hardware
Topic: Beginning of very long journey
Replies: 257
Views: 64309

Re: Beginning of very long journey

I will take a look at https://www.samtec.com/products/mec2-20-01-l-dv-np if this could somehow be adapted as right-angle plugin module.
by mpattonm
Sun Dec 29, 2019 1:40 pm
Forum: Hardware
Topic: Beginning of very long journey
Replies: 257
Views: 64309

Re: Beginning of very long journey

Perhaps a custom header connection could be put on the motherboard, something that uses the same amount of data lines. Then if people want to, they could make their own cables to connect from the motherboard to the back of their 'case' or whatever they end up using. Please forgive my ignorance if t...
by mpattonm
Sun Dec 29, 2019 1:34 pm
Forum: Hardware
Topic: Beginning of very long journey
Replies: 257
Views: 64309

Re: Beginning of very long journey

it the worst case, an user can reuse a connector from dead ST Right, but I really do not want to put an effort for "the worst case". I mean few people could move them from donor boards, right. But unless there is a source for new replacements on open market, I am not going to include Atar...
by mpattonm
Sun Dec 29, 2019 8:41 am
Forum: Hardware
Topic: Beginning of very long journey
Replies: 257
Views: 64309

Re: Beginning of very long journey

Could an alternative connector be used allowing cartridges to be modified ? Whats the point? All current cartridges would be useless anyway. it the worst case, an user can reuse a connector from dead ST Right, but I really do not want to put an effort for "the worst case". I mean few peop...

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