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by rubber_jonnie
Sun Sep 27, 2020 11:52 pm
Forum: MEMBER BLOGS
Topic: Stuff and Things.
Replies: 344
Views: 36136

Re: Stuff and Things.

I did test it out already, with missing chips 4MB https://www.exxoshost.co.uk/forum/viewtopic.php?f=11&t=3358 Fired up this evening, thinks it has 4MB, but goes belly up in the ram test. Typically, all the RAM I have is 41256(I have probably 50-60 of these!), so I need to get some 4256s lined up. A...
by rubber_jonnie
Sun Sep 27, 2020 11:17 pm
Forum: ELECTRONICS
Topic: Soldering iron recommendations
Replies: 8
Views: 125

Re: Soldering iron recommendations

Ok, so in a bit of a switch, the tips I ordered yesterday arrived early evening (Thanks Amazon Prime!) and I am shocked at the difference it's made! The iron in my dual rig is now responding much better to temperature control than it ever did with the included tips, and even the thin tips in the new...
by rubber_jonnie
Sun Sep 27, 2020 1:04 pm
Forum: ELECTRONICS
Topic: Soldering iron recommendations
Replies: 8
Views: 125

Re: Soldering iron recommendations

There is a similar thread here https://www.exxoshost.co.uk/forum/viewtopic.php?f=35&t=338 I did go and look, but things move on so fast! Also found this in the meantime: https://cpc.farnell.com/duratool/d03323/2-in-1-smd-rework-station/dp/SD02291?mckv=srXUWAiPy_dm|pcrid|224654335881|kword||match||p...
by rubber_jonnie
Sun Sep 27, 2020 11:25 am
Forum: ELECTRONICS
Topic: Soldering iron recommendations
Replies: 8
Views: 125

Soldering iron recommendations

I currently have a relatively cheap dual purpose Chinese solder/hot air station. I really like the hot air side, but the soldering iron side is a bit meh. I did have a Maplin iron that I'd had for 20 odd years, which was temp controllable and great to work with, but unfortunately it got knocked off ...
by rubber_jonnie
Sun Sep 27, 2020 11:02 am
Forum: HARDWARE ISSUES
Topic: 520STFM: After replacing memory: White screen of death.
Replies: 31
Views: 298

Re: 520STFM: After replacing memory: White screen of death.

My advice for anybody doing any sort of upgrades is to only do only one thing at a time. Easy to say retrospectively I know! Upgrade the RAM, test and if all is well, add the Blitter socket. If it doesn't work then you only have one thing to try and troubleshoot. I know how easy it is to get caught ...
by rubber_jonnie
Sat Sep 26, 2020 7:17 pm
Forum: INTRODUCE YOURSELF
Topic: Hello - I'm new
Replies: 3
Views: 63

Re: Hello - I'm new

:welcomewave:
by rubber_jonnie
Sat Sep 26, 2020 7:16 pm
Forum: MEMBER BLOGS
Topic: Stuff and Things.
Replies: 344
Views: 36136

Re: Stuff and Things.

I did test it out already, with missing chips 4MB https://www.exxoshost.co.uk/forum/viewtopic.php?f=11&t=3358 Since I posted I've come to the conclusion it must be 4MB total, 1MB on board, the 16 511000 chips are another 2MB, and the 4 4256 are not quite a full bank, it needs another 4 chips to mak...
by rubber_jonnie
Sat Sep 26, 2020 5:34 pm
Forum: MEMBER BLOGS
Topic: Stuff and Things.
Replies: 344
Views: 36136

Re: Stuff and Things.

Latest in from exxos , a Mega (Looks like the base MB is the same as my Mega 1), with an unusual RAM expander: IMG_20200926_133719.jpg IMG_20200926_133554.jpg Based on the chip sizes, I think it has 2.5MB of RAM, with space for another half MB, so including onboard RAM I think it's 3.5MB total, unle...
by rubber_jonnie
Fri Sep 25, 2020 3:46 pm
Forum: ROM UPGRADES
Topic: STFM (2 ROM): What EEPROM chips are compatible?
Replies: 13
Views: 150

Re: STFM (2 ROM): What EEPROM chips are compatible?

JezC We have had to go to extreme lengths with Oliver. Where he was before we got him, he was allowed to roam free, but because of neighbours/dogs etc where we are, he stays in and gets escorted round the garden as much as possible. Of course when we first got him, you're supposed to keep them in a...
by rubber_jonnie
Fri Sep 25, 2020 3:04 pm
Forum: ROM UPGRADES
Topic: STFM (2 ROM): What EEPROM chips are compatible?
Replies: 13
Views: 150

Re: STFM (2 ROM): What EEPROM chips are compatible?

JezC wrote:
Fri Sep 25, 2020 3:00 pm

Yup...it's only when they get past 10 that they seem to spend more time asleep...and let us do the same!

I'm currently being 'helped' by him as I try to catch up on e-mails etc. :roll: :lol:
I am regularly helped by ours in my home office. You know what I mean by 'helped'

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