I have recently acquired a 520STFM, it has a C103253 Rev.1 motherboard, fitted with TMM41256AT-12 PLCC18 RAM chips What are my upgrade options?
512kb -> 1 Mb source of plcc18 ram CHIPS,
512KB -> 1 Mb add on board
512kb -> 4 mb upgrades
Thanks
Peter
520stfm mb c103253rev.1 RAM upgrade options
Re: 520stfm mb c103253rev.1 RAM upgrade options
Can you upload a picture of your motherboard it will be a lot easier to see what you have going on..
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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.
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Re: 520stfm mb c103253rev.1 RAM upgrade options
I have in the past attempted to upgrade one of these by adding the ram and it didn't end well.
Personally I'd opt for one of these: https://www.exxosforum.co.uk/atari/store2/#0035
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...