Search found 237 matches

by rubber_jonnie
Wed Apr 25, 2018 11:17 pm
Forum: ELECTRONICS
Topic: Memory Chip Test Rig
Replies: 2
Views: 29

Re: Memory Chip Test Rig

exxos wrote:
Wed Apr 25, 2018 11:09 pm
:dualthumbup: Geek points for you today!

Takes me like 10mins to get one chip into a socket, so a ZIF is a great idea!
Ooooh, more geek points, ace :)
by rubber_jonnie
Wed Apr 25, 2018 11:04 pm
Forum: ELECTRONICS
Topic: Memory Chip Test Rig
Replies: 2
Views: 29

Memory Chip Test Rig

Speaking to Exxos the other day about a RAM issue, he suggested I remove one chip from a working bank, and fit a socket so I could test a chip at a time. Whilst it was a fantastic idea, removing the RAM chips from the socket was a pain and risked breaking pins on the chips, so I wondered how I could...
by rubber_jonnie
Wed Apr 25, 2018 10:43 pm
Forum: ROM UPGRADES
Topic: Fixing broken pins on a ROM chip
Replies: 2
Views: 26

Fixing broken pins on a ROM chip

Since this just happened to me, and also someone else on the Facebook Pages, I thought I'd do a quick fix guide for if you've broken a pin off your ROMs, or indeed any other chip. In my case, it was the fact I had to remove a dual ROM setup, where the pins had been bent up, so they were not plugged ...
by rubber_jonnie
Tue Apr 24, 2018 2:34 pm
Forum: CHAT FORUM
Topic: Maplin for sale?
Replies: 9
Views: 250

Re: Maplin for sale?

I have a Maplin temperature controlled soldering iron, and it has been very reliable over the years.

Also got a 120W universal laptop PSU the other day, 60% off. Was £45 and I got it for £18. It's a good PSU and includes a USB charge socket too.
by rubber_jonnie
Tue Apr 24, 2018 9:11 am
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 65
Views: 2585

Re: STE V1.5 32MHz BOOSTER - STATUS

exxos wrote:
Mon Apr 23, 2018 5:46 pm

If anything, the squares might have to be fraction smaller than the CPU. Square is actually quite hard to fit in even with just one row of pins inserted.
Are the pins hard to fit if the square goes in first?
by rubber_jonnie
Tue Apr 24, 2018 9:05 am
Forum: STFM
Topic: C070789-001 REV.F2
Replies: 3
Views: 36

Re: C070789-001 REV.F2

Atarian Computing wrote:
Tue Apr 24, 2018 8:44 am
I didn't even notice. I got this photo from my archive. Not sure on the status. I should check it some time.
Cool, be interesting to know what you find.
by rubber_jonnie
Tue Apr 24, 2018 8:24 am
Forum: STFM
Topic: C070789-001 REV.F2
Replies: 3
Views: 36

Re: C070789-001 REV.F2

Interesting, your second bank of 512K, the RAM in the sockets, has no decoupling capacitors, does the extra memory work ok?
by rubber_jonnie
Mon Apr 23, 2018 5:13 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 65
Views: 2585

Re: STE V1.5 32MHz BOOSTER - STATUS

exxos wrote:
Mon Apr 23, 2018 4:59 pm

Don't know yet :)

I guess if Troed is printing them, he can add the "dummy pins" to the CPU as well if needs be.
Fair enough, would be good to see the results from both options. Shame I don't have a 3d printer myself, or I'd give it a go. Maybe later in the year....
by rubber_jonnie
Mon Apr 23, 2018 4:39 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 65
Views: 2585

Re: STE V1.5 32MHz BOOSTER - STATUS

That is pretty much as I expected, as in similar to MMU adapters. Not dissimilar to the way Alan H's IDE board plugs into the PLCC socket, albeit with a CPU in place. I guess the question I have, is when plugged in like this, does the plastic square support the PLCC socket spring connectors enough, ...
by rubber_jonnie
Mon Apr 23, 2018 3:47 pm
Forum: STE V1 32MHz BOOSTER
Topic: STE V1.5 32MHz BOOSTER - STATUS
Replies: 65
Views: 2585

Re: STE V1.5 32MHz BOOSTER - STATUS

So the idea would be that it ends up like a hand assembled version of this:
R244686-01.jpg
R244686-01.jpg (41.53 KiB) Viewed 15 times
Will the idea be that the plastic square will be fixed to the PCB?