marten@tpki.uucp (Marten Feldtmann) (05/23/90)
>From: riddler@iesd.auc.dk (Claus Priisholm) >Date: 22 May 90 12:10:47 GMT >In article <12154@stag.math.lsa.umich.edu> hyc@math.lsa.umich.edu (Howard Chu) writes: >>I wonder why no one ever marketed a 68010 based accelerator. Not enough zip >>to be worth the trouble? >The 68010 introduces some of the same problems as 68020 and upwards. >It has an extra register for its virtual memory management, this register >will be put on the stack on exceptions. TOS must then remember to remove A German magazine (ct) produced a card with 68020 and 68881 and also developed a patched Blitter-TOS version. They removed F-Traps and so on and I tested it with a 68010. But my ST did not get much faster, about 3% to 5%. With 68020/68881 I got the information, that you perhaps get 20% to 30%, but at those days, there were not many compilers supporting this card, using the 68020 instructions or even the F-Traps, but now TURBO-C 2.0 has arrived.... Now the best way to speed up the ST is to get a 16MHZ card with cache. I am using one for about five months and it speeds up the ST about 50% to 75%. Smalltalk, for example, speeds up from Index 40 to Index 70. The company is now developing a 68030-16 MHZ card including cache and 32-bit patched ROM, but the price (>2000.- DM)!!! They will show it on the Atari fair in Duesseldorf this summer. Marten M. Feldtmann, Eckernfoerder Str.83, 2300 Kiel 1, West-Germany SUBNET:marten@feki DNET\EUNET\USENET:marten@tpki.de
jensting@skinfaxe.diku.dk (Jens Tingleff) (05/29/90)
marten@tpki.uucp (Marten Feldtmann) writes: [..] >at those days, there were not many compilers supporting this card, using the >68020 instructions or even the F-Traps, but now TURBO-C 2.0 has arrived.... Or, ahemm, GCC using ``-m68881 -m68020'' options and the special assembler, from dsrgsun.ces.cwru.edu (or, of course, bravo.ces.cwru.edu). Jens jensting@diku.dk is Jens Tingleff MSc EE, Research Assistent at DIKU Institute of Computer Science, Copenhagen University Snail mail: DIKU Universitetsparken 1 DK2100 KBH O