Search found 5410 matches

by exxos
Mon Oct 02, 2017 9:13 pm
Forum: SHOW US YOUR COLLECTIONS
Topic: Is this a atari ?
Replies: 12
Views: 3348

Re: Is this a atari ?

One person suggested it may be some sort of Pong console...
by exxos
Mon Oct 02, 2017 8:53 pm
Forum: PSU (power supplies)
Topic: Future PSU designs
Replies: 106
Views: 14800

Re: Future PSU designs

I had a 10uH flat coil to hand as I use previously so I mash that in to see what happened.. IMG_1894.JPG I checked efficiency and it severely jumped up, this is amazing! :twisted: :twisted: 8V 1.30A 10.40W 94.24% 9V 1.15A 10.35W 94.70% 10V 1.04A 10.40W 94.24% 11V 0.95A 10.45W 93.79% 12V 0.87A 10.44W...
by exxos
Mon Oct 02, 2017 8:34 pm
Forum: SHOW US YOUR COLLECTIONS
Topic: Is this a atari ?
Replies: 12
Views: 3348

Re: Is this a atari ?

Kik wrote:
Mon Oct 02, 2017 6:36 pm
I bought this and i think it's a atari would like some help whit some info from pro atari gamers :)
I have no idea what this is, but I will ask around.

Does it have any logos, or information on the bottom of the unit ?
by exxos
Mon Oct 02, 2017 8:16 pm
Forum: BENCHMARKS
Topic: NVDI 5.03 32MHZ STE
Replies: 1
Views: 2807

NVDI 5.03 32MHZ STE

First benchmark is a STE at 8 MHz with tos 206 with NVDI installed.
08NVDI_result.png
08NVDI_result.png (4.37 KiB) Viewed 2807 times


Same test as above, but at 32 MHz.
32NVDI_result.png
32NVDI_result.png (4.38 KiB) Viewed 2807 times


And for the sake of completeness, 32 MHz without NVDI.
STE32_result.png
STE32_result.png (4.34 KiB) Viewed 2807 times
by exxos
Mon Oct 02, 2017 5:09 pm
Forum: PSU (power supplies)
Topic: Future PSU designs
Replies: 106
Views: 14800

Re: Future PSU designs

New efficiency results.. 9V 1.18A 10.62W 92.29% 10V 1.06A 10.60W 92.46% 11V 0.97A 10.67W 91.86% 12V 0.90A 10.80W 90.75% 13V 0.83A 10.79W 90.83% 14V 0.77A 10.78W 90.92% 15V 0.72A 10.80W 90.75% 16V 0.68A 10.88W 90.08% 17V 0.64A 10.88W 90.08% 18V 0.61A 10.98W 89.26% As suspected, and as found, the gene...
by exxos
Mon Oct 02, 2017 4:42 pm
Forum: NEWS & ANNOUNCEMENTS
Topic: ST PSU NEW BATCH IN THE MAKING
Replies: 24
Views: 4253

Re: ST PSU NEW BATCH IN THE MAKING

I have decided to order the Falcon power connectors from a company in the UK. These will be assembled to my specification ready to solder into power supply circuit boards. These will be here in a few weeks time, meanwhile I will try and start assembly of some more PCBs. This will take a great deal o...
by exxos
Mon Oct 02, 2017 3:16 pm
Forum: HARDWARE DISCUSSIONS
Topic: Switch between 4mb and 1Mb on STe
Replies: 5
Views: 774

Re: Switch between 4mb and 1Mb on STe

MMU -> R454 -> simm normally.

MMU -> nothing (lift one end of R454)
Simm side of R454 connect to gnd.



Looks like R454 anyway...
20171002151429.jpg
20171002151429.jpg (6.86 KiB) Viewed 753 times
by exxos
Mon Oct 02, 2017 12:57 pm
Forum: EVERYTHING ELSE
Topic: Boosting the Mega ST motherboard
Replies: 11
Views: 2658

Re: Boosting the Mega ST motherboard

LS being slower acts as a noise filter. F series is fast enough to react to the noise and will cause glitches and oscillations.
by exxos
Mon Oct 02, 2017 8:18 am
Forum: HARDWARE DISCUSSIONS
Topic: Switch between 4mb and 1Mb on STe
Replies: 5
Views: 774

Re: Switch between 4mb and 1Mb on STe

Isolate MAD9 and GND the simm side pin.
by exxos
Sun Oct 01, 2017 11:08 pm
Forum: HARDWARE ISSUES
Topic: STE video synchronisation problem
Replies: 35
Views: 3866

Re: STE video synchronisation problem

I thought that too and have even bought more MC1377s, but if I just measure pin 9 on socket without the IC, then I should see something like >5-6VDC, but I see only this: I would confirm your IC's are "blown" on your other machine before anything else.. or try a brand new IC (never before being use...