ZN wrote: > There is another possibility that I have been toying with that would be > VERY simple to incorporate if the MAC programmable chip is reporgrammed, > which is what it needs to implement Flash ROM compatibility - and that > would be re-enabling two screens even in higher resolutions and colors. The > whole memory area would be enabled and could hold up to 2 x 1024x512 in 2 > colors (fairly useless), 2x 512x512 (used as 512x256 or 512x384) in 16 > colors (also fairly useless) but also 2 x 512 x 256 in 256 colors. Maybe we > get an arcade style game for the Aurora out of it ;-)
Heh, nice in theory (except that I've returned the Aurora system to Roy anyway ;-) But does one know when the vertical retrace is happening? > Agreed. This is why some exploration is needed... > The SGC can actually access the Aurora ROM chip proper (and the SGC ROM > chip as well) at alternate addresses (starting at $400000 IIRC), what is > unclear is if it can also generate write cycles on the bus for those > addresses. Can't one see that in the chip code Keith has recovered? >>I'd say better invest the time in a complete replacement for the SGC ;-) > I would tend to agree - but some facts should be mentioned as well: > 1) All of the above are fairly trivial things and therefore can be used as > stop-gap measures > 2) There are a number of Auroras and SGCs out there and such mods are very > cheap, unlike a whole new replacement - this has to do with the required > critical mass of users, mostly. But I think an improved SGC would also certainly reduce the base for a new card, making it even less worthwhile. If a new card were to appear, that is. Marcel _______________________________________________ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm
