Search found 1417 matches

by troed
Thu Mar 15, 2018 4:12 pm
Forum: Hardware
Topic: New RAM testing program
Replies: 26
Views: 17796

Re: New RAM testing program

Thanks! :) Could I suggest editing the top post to include the most current version? I must confess I didn't look through all individual posts :/
by troed
Wed Mar 14, 2018 10:00 pm
Forum: Hardware
Topic: New RAM testing program
Replies: 26
Views: 17796

Re: New RAM testing program

I have just piggy-back upgraded a 520ST using memory chips I've carelessly hot-aired out from other ST machines, and predictably some of the chips have faults. During the hunt to find out which, I realized it would be nice to be able to force a RAM test program like this to test a specific memory si...
by troed
Wed Mar 14, 2018 10:46 am
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 141
Views: 21253

Re: Hatari 2.1.0 has been released

My guess is that the folder with the .prg hasn't been added as GEMDOS emulated drive in Hatari's preferences. Without adding a "hard drive", there's no place (but disk images) to run things from within the emulated ST environment.
by troed
Wed Mar 07, 2018 10:41 pm
Forum: Hardware
Topic: 4MB Upgrade & 16MHz Booster progress
Replies: 721
Views: 109204

Re: 4MB Upgrade & 16MHz Booster progress

Update on the doubleST overclock of the ST bus, MMU and Shifter: I've moved from using a 74F161 binary counter for clock generation to a GAL, which has allowed me to make it all switchable between doubleST, the original "Stefan"-mod and stock. It's not perfectly stable yet, but it's in goo...
by troed
Sat Mar 03, 2018 6:05 pm
Forum: CT60 / CT63 Area
Topic: CT60e overclock HELP!
Replies: 5
Views: 1642

Re: CT60e overclock HELP!

I was running just fine at 100 MHz at 50 degrees C if the temp display is right. It isn't. To know the real temperature you must measure the resistance between two of the CPU pins before inserting the CPU into the CT60e. With that you can then calculate an offset to the temp you see in the .acc. Th...
by troed
Tue Feb 27, 2018 9:03 pm
Forum: Hardware
Topic: "Waving" RGB output - cause?
Replies: 13
Views: 3503

Re: "Waving" RGB output - cause?

So, after Anders found the problem it becomes a bit easier to backtrack to how it could happen :) I only use ubeswitch VGA-adapters, that is, HSYNC and VSYNC signals that come directly from GST-MCU through an inductor and resistor to the monitor port. http://info-coach.fr/atari/hardware/interfaces.p...
by troed
Sun Feb 25, 2018 8:56 am
Forum: Hardware
Topic: "Waving" RGB output - cause?
Replies: 13
Views: 3503

Re: "Waving" RGB output - cause?

PSU has been replaced by another one, the issue stays just the same (and the original PSU works fine in another STE) I'm still at a loss to explain how this could happen. There's only a resistor and inductor between the GST-MCU signal and the output and I can't see how a low oscillation signal can i...
by troed
Sat Feb 24, 2018 8:31 pm
Forum: Hardware
Topic: Mega ST 4 capacitor list
Replies: 1
Views: 333

Re: Mega ST 4 capacitor list

To recap the PSU exxos has a complete kit, just check which PSU you have and order the right kit: https://www.exxoshost.co.uk/atari/last/storenew/#0027 Regarding that large cap, it's very likely the only one besides the PSU you need to do. 16V or 25V at 4700uf will work nicely. I actually just repla...
by troed
Fri Feb 23, 2018 8:01 pm
Forum: Hardware
Topic: SD vs. CF memory cards for IDE interface
Replies: 29
Views: 9627

Re: SD vs. CF memory cards for IDE interface

As I said, it doesn't have a master/slave jumper but use Cable Select. The Falcon doesn't support Cable Select, pin 28 (Cable Select) is permanently grounded which will cause the SD-adapter to always be Master. If you need to use both the SD-adapter and another device on the bus you put the SD-adap...
by troed
Tue Feb 20, 2018 10:14 pm
Forum: Hardware
Topic: "Waving" RGB output - cause?
Replies: 13
Views: 3503

"Waving" RGB output - cause?

I recently sold one of the best looking STEs in my collection. Very modern motherboard (square DMA), updated with new TOS and recapped PSU. Tested and working nicely with an UBE video adapter and the flatscreens I have. But for the buyer it's not working as it should. When cold the image is fine, bu...
by troed
Tue Feb 20, 2018 3:28 pm
Forum: Hardware
Topic: 1040 STE capacitors
Replies: 8
Views: 927

Re: 1040 STE capacitors

Dal wrote:40V rated cap will be fine assuming it fits.


:) Yeah they're a bit fatter (and slightly longer).

beefycap.jpg


Thx.
by troed
Tue Feb 20, 2018 1:17 pm
Forum: Hardware
Topic: 1040 STE capacitors
Replies: 8
Views: 927

Re: 1040 STE capacitors

siriushardware wrote:same voltage (or a little bit higher is OK)


How much is "a little"? I found axial 4700uF capacitors in my local electronics store and since I was ordering other stuff anyway I bought a few. They're 40V though, so pretty beefy compared to the 16V they would replace.
by troed
Tue Feb 13, 2018 3:43 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 141
Views: 21253

Re: Hatari 2.1.0 has been released

I have a problem with the cursor (also in previous version). There are 2 cursors visible and neither is able to cover the whole window. I have to resize the window and then all is working as expected. Using High Sierra. How can I solve this? Am I the only one? Depending on your usage, the easiest m...
by troed
Tue Feb 13, 2018 1:07 pm
Forum: Hardware
Topic: TT and MSTe PSU
Replies: 28
Views: 4517

Re: TT and MSTe PSU

joska wrote:all powered from a single XBOX powerbrick.


Thanks for that little tidbit - I hadn't thought about it :D I have a bunch of those laying around (used to mod a lot of Xboxes back in the day).
by troed
Sat Feb 10, 2018 7:53 pm
Forum: Hatari
Topic: Slow mouse response under MacOS
Replies: 1
Views: 1524

Re: Slow mouse response under MacOS

Hi John, You're not the first to report mouse pointer issues, although the descriptions of the effect has varied. Unfortunately I'm also on High Sierra and do not see this issue so it's not immediately clear what the cause could be or how to fix it. So I will need to ask for more details. 1) What ha...
by troed
Sat Feb 10, 2018 8:41 am
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 141
Views: 21253

Re: Hatari 2.1.0 has been released

I just downloaded it again. Problem persists indeed :? Yes, sorry if I was unclear in my previous post. The included portmidi library is compiled for 10.9 and up. I have compiled my own version of the library that works on 10.6+, but until someone verifies that Midi works as well with the library I...
by troed
Fri Feb 09, 2018 5:38 pm
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 141
Views: 21253

Re: Hatari 2.1.0 has been released

Having trouble mounting the disk image on mac os 10.11.6 (15G19009). Says 'no mountable file systems'. Is it just me? Nope, it was not just you. Apple in all their wisdom implemented a new file system (APFS) in High Sierra, and now Disk Utility defaults to using it when creating .dmgs. My bad. Also...
by troed
Thu Feb 08, 2018 2:18 pm
Forum: CT60 / CT63 Area
Topic: CT60e is coming :)
Replies: 506
Views: 135336

Re: CT60e is coming :)

FWIW, I use an 80W picoPSU. Make sure to get one that hasn't got a too high footprint. My 80W is level with the top of the SDRAM stick.

/Troed
by troed
Thu Feb 08, 2018 11:35 am
Forum: Hatari
Topic: Hatari 2.1.0 has been released
Replies: 141
Views: 21253

Re: Hatari 2.1.0 has been released

... and a very nice intro it is! :)
by troed
Mon Feb 05, 2018 10:05 pm
Forum: News & Announcements
Topic: New Internal Falcon PSU for CT60, CT60e, CT63...
Replies: 27
Views: 8927

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

I had forgotten all about it :D Will print and see - thanks for the reminder!

/Troed
by troed
Mon Feb 05, 2018 8:36 pm
Forum: CT60 / CT63 Area
Topic: CT60e is coming :)
Replies: 506
Views: 135336

Re: CT60e is coming :)

I continued my investigation into accurate temperature readings in another thread: http://atari-forum.com/viewtopic.php?f=97&t=31210&start=50#p338498 In short, if you measure the resistance between two pins on your 68060 before you plug it into the CT60e, you will be able to get a more accur...
by troed
Mon Feb 05, 2018 2:29 pm
Forum: Hardware
Topic: Atari STFM - chip frequencies
Replies: 6
Views: 670

Re: Atari STFM - chip frequencies

frank.lukas wrote:ACIA = 500kHz


Right - I was thinking of the E-clock bus from the CPU they're synchronizing with (1/10 of CPU freq)
by troed
Mon Feb 05, 2018 1:46 pm
Forum: Hardware
Topic: Atari STFM - chip frequencies
Replies: 6
Views: 670

Re: Atari STFM - chip frequencies

tcat wrote:I wish to find out, what rates various chip frequencies are in plain STFM machines.


Shifter: 32MHz
MMU: 16MHz
CPU: 8MHz
GLUE: 8MHz
Floppy: 8MHz
MFP: 4MHz
YM2149: 2MHz
ACIA: 0.8MHz

See http://info-coach.fr/atari/hardware/_ste-hw/clocks.jpg

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