Hi all.
This is just a quick post regarding a source of 41256AP-12 ram chips.
I recently bought 50 of these: https://www.utsource.net/sch/KM41256AP-12
Last night I upgraded one of my STFM mainboards, a C070789-001 REV .F to 1MB on board RAM using these, and it all went great, so I thought I'd let everybody know that it seems to be a good source.
I ran it for some time with Yaart (Attached to this post) to test, and had no issues. I'll be upgrading a C070789-001 REV .D soon, so will post how that goes.
If you're doing this, then you'll need 3x 33r resistors to enable the RAM banks and 8x 10nF capacitors. I used sockets, but they are optional.
Installed it looks like this:
RAM chip source
- rubber_jonnie
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RAM chip source
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Collector of many retro things!
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
800XL and 65XE both with Ultimate1MB,VBXL/XE & PokeyMax, SIDE3, SDrive Max, 2x 1010 cassette, 2x 1050 one with Happy mod, 3x 2600 Jr, 7800 and Lynx II
Approx 20 STs, including a 520 STM, 520 STFMs, 3x Mega ST, MSTE & 2x 32 Mhz boosted STEs
Plus the rest, totalling around 50 machines including a QL, 3x BBC Model B, Electron, Spectrums, ZX81 etc...
Re: RAM chip source
I order few times from utsource never have any issues just to today I order another bunch of parts and was as well 40pcs of K4E151612C-TC50 for 20 tested pcs only 2pcs working 18 is bad and 20 still is in rail
Today I must write messages to utsource about this and am very interested how I'll be results
Today I must write messages to utsource about this and am very interested how I'll be results
Re: RAM chip source
Pretty much like all china stuff now. I'm selling various tested DRAM in my store.. I am trying to expand the range, though its slow going.
https://www.exxosforum.co.uk/atari/ All my hardware guides - mods - games - STOS
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.
https://www.exxosforum.co.uk/atari/store2/ - All my hardware mods for sale - Please help support by making a purchase.
viewtopic.php?f=17&t=1585 Have you done the Mandatory Fixes ?
Just because a lot of people agree on something, doesn't make it a fact. ~exxos ~
People should find solutions to problems, not find problems with solutions.