Randy Posted May 1, 2020 Share Posted May 1, 2020 Hi all, with this apart now, a couple of questions to ask. I note a square silk screen in lower right corner that is unpopulated, is that for a socket to install the blitter chip? Also, can the original 256 k memory chips be removed and replace with 1 meg chips to get 4 meg in this machine? Thanks! Quote Link to comment Share on other sites More sharing options...
ParanoidLittleMan Posted May 1, 2020 Share Posted May 1, 2020 Yeah, that's place for blitter . You can not just replace RAM chips, those for 4 MB have more pins. And likely will need to solder 1 wire to bottom of mainboard, because highest address line MAD9 is not accessible on top side. Usually RAM expansion in STs goes with board with RAM chips + lot of soldering. 2 Quote Link to comment Share on other sites More sharing options...
marcfrick2112 Posted May 2, 2020 Share Posted May 2, 2020 On 5/1/2020 at 12:02 AM, ParanoidLittleMan said: Yeah, that's place for blitter . You can not just replace RAM chips, those for 4 MB have more pins. And likely will need to solder 1 wire to bottom of mainboard, because highest address line MAD9 is not accessible on top side. Usually RAM expansion in STs goes with board with RAM chips + lot of soldering. Ok, I am an ST Noob. Are there any RAM upgrade options for this machine that doesn't need soldering? I really want an ST that handles demos and works for some productivity as well. And sorry to hijaak the thread. Quote Link to comment Share on other sites More sharing options...
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