I shall do it, eventually. Meanwhile, I am very interested in the 68020 adapted Thors. Does anyone on-list have one? Mine's a Thor XVI (with video issues, but that's another thread) so it just has a 68000@8MHz, though I am working on an upgrade for that, too :)
Dave On 3/9/13, Ian Burkinshaw <ian.burkins...@btopenworld.com> wrote: > Hi Dave > > Sounds interesting, I would be interested in a write up and schematic. > > Could be a good basis for QL based controller/computer. Sort of like > Raspberry Pi but without the Linux.. Just build what you need for a given > application. > > As you say nifty. > > Ian Burkinshaw > ----- Original Message ----- > From: "Dave Park" <plasticu...@gmail.com> > To: <ql-us...@q-v-d.com> > Sent: Friday, March 08, 2013 10:20 PM > Subject: [Ql-Users] [QL-Users] Something I have been playing with... > > > Hi all, > > Mostly copied over from qlforum.co.uk, so if you read it there, sorry for > the redundancy! > > Today I ran a loop on an unexpanded QL in monitor mode (US model, has weird > interrupts) and then with a 68EC020, a GC and a SGC. > > 100 PRINT DATE$ > 110 FOR loop = 0 to 100000 : NEXT loop > 120 PRINT DATE$ > > It's a good timewaster. It just moves things around, takes a certain amount > of time. > > Machine Time > Bare QL 2m17s > My 14MHz EC020 1m01s > My 020+RAM 0m39s > Gold Card 0m29s > Super Gold Card 0m12s > > > My first line is an MC68EC020 running just pure QL hardware. I can't get it > reliable above 14MHz so that was the speed for the test. > > My second, faster line is with 512MB of 16-bit SRAM added, and a simple PAL > address decoder that allows the 020 to access the memory in its native > width. > > Rounding off, with QL = 1, basic 020@14MHz = 2.3, 020+RAM = 3.5, GC = 4.8, > SGC = 12.5 > > So I have a little way to go, I think. However, 2.3x achieved by around £40 > of components is... nifty. > > If this gets people wildly excited, I'll write up a how-to and a schematic > > Dave > _______________________________________________ > QL-Users Mailing List > http://www.q-v-d.demon.co.uk/smsqe.htm > > > _______________________________________________ > QL-Users Mailing List > http://www.q-v-d.demon.co.uk/smsqe.htm > _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
