On 2013-12-17, at 23:24, Gerrit Heitsch <gerrit@laosinh.s.bawue.de> wrote: >> Several of the times when I tried to "clean up" this kind of thing for >> the C128 I would come across a compatibility issue; we found that third >> parties had used the glitches on IO lines to latch R/W and that some carts >> like the Magic Voice cart would drive the bus at unexpected times >> including the high address lines (They would toggle /GAME and /EXROM >> dynamically when the system had been designed for them to be solder >> jumpers). Eventually I stopped trying to "improve" it and try to learn to >> "live with" it. > > There are other carts that are guilty of that... The feature of the Easy Flash 3 that lets you use a KERNAL on the Expansionport without having to remove the internal one or any internal soldering needs dirty tricks like this. > > See here: > > skoe.de/kernal/kernal-cartridge.pdf > > Some people like it, I don’t. I extremely highly appreciate the work ‘skoe’ has done on it. I like it a lot in the sense that it does what “can’t be done”. I remember when I first read that doc some time ago I was like “heck - that dude just R0XX!!” Yeah, I like it very much. Not as a design, but as an extremely clever hack allowing indirectly to do what can’t normally be done. Of course - I’d prefer that the appropriate lines were jut available on the port and this kind of things would not be necessary. But since they aren’t... no - Thomas made something I never thought was possible. All respect to him for that! -- SD! Message was sent through the cbm-hackers mailing listReceived on 2013-12-18 15:02:11
Archive generated by hypermail 2.2.0.