Search found 16 matches

by redhawk668
Tue Aug 28, 2018 7:03 pm
Forum: 8 BIT CORNER
Topic: Not Atari, but definitely 8bit (ZX81)
Replies: 12
Views: 628

Re: Not Atari, but definitely 8bit (ZX81)

Wow, my first computer. Got it when I was about 9. Although mine was a Timex Sinclair 1000 with a wobbly rampack :P.
by redhawk668
Sat Apr 07, 2018 6:25 pm
Forum: STFM
Topic: C103175 REV 1 (520 STFM)
Replies: 4
Views: 964

Re: C103175 REV 1 (520 STFM)

You’re welcome :D
by redhawk668
Fri Apr 06, 2018 9:42 pm
Forum: STFM
Topic: C103175 REV 1 (520 STFM)
Replies: 4
Views: 964

Re: C103175 REV 1 (520 STFM)

This looks a lot like my C103414-001 board. It has the same IMP chipset, layout is similar only on your board the memory is through hole. On my board, the memory is also SMT. The pinout of those DRAM’s should be the same as on mine, only the package is different. On my board, we’ve removed the 256kx...
by redhawk668
Sun Apr 01, 2018 3:21 pm
Forum: 8 BIT CORNER
Topic: 130XE to 320 KB.
Replies: 2
Views: 434

130XE to 320 KB.

Well, I successfully completed a 320 KB upgrade on my 130XE and now knowing that the information is very hard to find I thought why not share my experiences doing this upgrade. This upgrade is based on an upgrade by Scott Peterson with a little improvement to make ANTIC banking work again, as this u...
by redhawk668
Sat Mar 31, 2018 4:31 pm
Forum: ELECTRONICS
Topic: Parts suppliers
Replies: 7
Views: 1167

Re: Parts suppliers

I’ve been using Digikey for some time now and till now not really any problems. I usually get the stuff I order. I like it, that you can make a BOM on their website, so you can order the same stuff as a kit again,
by redhawk668
Fri Mar 30, 2018 9:25 pm
Forum: ELECTRONICS
Topic: Parts suppliers
Replies: 7
Views: 1167

Re: Parts suppliers

For parts: Digikey USA: http://www.digikey.com Digikey UK http://www.digikey.co.uk In my case, as I live in the Netherlands: http://www.digikey.nl I mostly order my stuff here, if I order more than €50,- the shipping is free. Only disadvantage is that I have to pay VAT when stuff arrives. They have ...
by redhawk668
Wed Feb 28, 2018 12:16 am
Forum: ELECTRONICS
Topic: My new USB microscope.
Replies: 12
Views: 1726

Re: My new USB microscope.

I have one of those magnifying tools you can put on your head with a light in it. Works for me, I do SMD soldering with it.
by redhawk668
Tue Feb 27, 2018 11:09 pm
Forum: CHAT FORUM
Topic: The "Things I never do again" - Thread :)
Replies: 23
Views: 1971

Re: The "Things I never do again" - Thread :)

Welll, that is something that happened some time ago, I was at home and my girlfriend would come over for the weekend. I had some of that par baked bread with some of that buttery stuff with herbs inside of it, thought it would be a nice surprise.... A surprise it was indeed... I had one of those mi...
by redhawk668
Fri Feb 23, 2018 7:05 pm
Forum: RAM UPGRADES
Topic: Mega ST1 to 4MB ...
Replies: 2
Views: 674

Re: Mega ST1 to 4MB ...

This is similar to a 4 mb upgrade on a C103414-11 STFM board. This board has 4x 4 bit 256 kb dram’s in SOIC package (SMD) and one empty bank. All resistors are connected on this board. The one I have, has an IMP chipset so it will not support 2,5 mb of memory. All of the 4 ram chips need to be remov...
by redhawk668
Fri Feb 23, 2018 6:30 pm
Forum: 8 BIT CORNER
Topic: A little bit of 8 Bit: 65XE upgrade to 128k RAM
Replies: 10
Views: 1630

Re: A little bit of 8 Bit: 65XE upgrade to 128k RAM

I’ve done a 320 kb upgrade on a 130XE, I had to desolder the second bank of ram chips. My solution uses a 74LS158, a 33 ohm resistor and some wire. I used the 256 kb drams from a dead Atari ST.