On 06/22/2013 04:01 PM, Julian Perry wrote: > What makes you sure it's ACTUALLY specifically for a 1541? The one mentioned here? That I don't know, but I DO know that there is a floppy speeder named 'TurboTrans 3.0' for the 1541 which also contained 256 oder 512KB RAM to keep one or two whole disks in RAM. Here's a picture of the PCB: http://www.cbmhardware.de/misc/images/ttfull.jpg The PCB looks a bit different from the one in the original Post, but if you look closer, the logic ICs look awfully familiar. So it might be a redesign or just a copy. Had to dig out my old 64'er Floppy Special Edition for this. :) Gerrit > Saturday, June 22, 2013, 11:44:40 PM, you wrote: > >> On 06/22/2013 03:40 PM, Michał Pleban wrote: >>> Ruud@Baltissen.org wrote: >>> >>>> I have found a 1541 add-on card with 512 KB DRAM on board. The >>>> problem: I have no idea who is the manufacturer. So I made some >>>> pictures: >>> >>> 512kB for a 1541? o_O > >> 256KB make sense and were sold, this way you could cache a whole disk in >> RAM and get (back then) extreme speed over a parallel cable. No more >> waiting for head movements. > >> Gerrit > Message was sent through the cbm-hackers mailing listReceived on 2013-06-22 15:01:17
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