Search found 2127 matches

by exxos
Mon Jul 16, 2018 9:05 pm
Forum: HARDWARE DISCUSSIONS
Topic: My latest restoration in pictures
Replies: 12
Views: 263

Re: My latest restoration in pictures

Think this was all going on early 2000. Thought the bad cap thing was earlier than that, more like early 90s ? Never looked into it.

EDIT:
Oh found it... https://en.wikipedia.org/wiki/Capacitor_plague

Probably explains what I saw in my old job then.
by exxos
Mon Jul 16, 2018 8:20 pm
Forum: HARDWARE DISCUSSIONS
Topic: My latest restoration in pictures
Replies: 12
Views: 263

Re: My latest restoration in pictures

Caps in ST are not known to cause problems or being excessively faulty. That is simply not true, I documented it like 10+ years ago that PSU's were failing in STEs. I even documented why on my site. Bad caps. I've had like 200 PSU's through my workshop, none of which will power a STE with 4MB RAM (...
by exxos
Mon Jul 16, 2018 7:55 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 133
Views: 5852

Re: STE V1.5 32MHz BOOSTER - STATUS

So this one worked first time.. see how it goes.. got the new firmware in it...

It it seems OK, will sell it cheaper for someone to beta test it ;) Will have a second one when I get more bits..

IMG_3054.JPG
IMG_3054.JPG (152.82 KiB) Viewed 16 times
by exxos
Mon Jul 16, 2018 6:56 pm
Forum: RTC (Real time clock)
Topic: no-software internal RTC
Replies: 17
Views: 915

Re: no-software internal RTC

:bravo:

Have you talked to Jookie about this stuff ? He did a keyboard injector for cosmosex and may be able to give some more info on it all.
by exxos
Mon Jul 16, 2018 5:51 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 133
Views: 5852

Re: STE V1.5 32MHz BOOSTER - STATUS

It does not look like a real-time 8MHz switch will be possible with this design. There simply isn't enough IO power in that PLD :( Problem is I have to delay DTACK because the CPU is running faster. Though I also have to turn this delay off to get back to stock 8MHz speeds. The problem is when the s...
by exxos
Mon Jul 16, 2018 4:37 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 133
Views: 5852

Re: STE V1.5 32MHz BOOSTER - STATUS

Board is getting there :)

I just tested the 8MHz switch and while it works, it actually glitches during transition :roll: I think it is a problem with my wait state code.. So currently sidetracked while I investigate the issue...

IMG_3049.JPG
IMG_3049.JPG (222.81 KiB) Viewed 37 times
by exxos
Mon Jul 16, 2018 1:44 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 133
Views: 5852

Re: STE V1.5 32MHz BOOSTER - STATUS

troed wrote:
Mon Jul 16, 2018 1:43 pm
(The next update will be from Chris swearing over hard to find connections between pins ;))
Most probably 8-)
by exxos
Mon Jul 16, 2018 1:12 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 133
Views: 5852

Re: STE V1.5 32MHz BOOSTER - STATUS

What I will try today is pre-soldering the CPU pins on the PCB as shown below.. Then I will paste the whole board and assemble.. This way the CPU pins have double the amount of solder on them..

pre-paste.jpg
pre-paste.jpg (204.89 KiB) Viewed 25 times
by exxos
Mon Jul 16, 2018 11:47 am
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 133
Views: 5852

Re: STE V1.5 32MHz BOOSTER - STATUS

So the current booster was running a couple of hours then died again :roll: I fluxed the board up and re-heated twice and it made no difference. The third time I heated it up , and pushed down on the CPU for a couple of minutes until it had cooled, and now it works! So what I am going to do is see i...
by exxos
Mon Jul 16, 2018 10:39 am
Forum: PSU (power supplies)
Topic: Exxos PSU + CT2B Falcon
Replies: 17
Views: 224

Re: Exxos PSU + CT2B Falcon

Thanks. Also mentions 2 ROM's as well.