ART100@PSUVM.PSU.EDU (Andy Tefft) (10/11/90)
In article <1990Oct10.205012.4878@nntp-server.caltech.edu>, toddpw@tybalt.caltech.edu (Todd P. Whitesel) says: > > Cards turn on their c800-cfff space whenever they are accessed in >the range $CnXX -- normally this is the CPU reading the next instruction >after the $cfff reference, but you can do it manually from the monitor. What do you mean by doing it manually from the monitor? I've been working on software for my Ace dual interface and it requires me to switch in and out the expansion rom space in order to work in 80-col mode. I've been executing do-nothing routines in the $cnxx space to do the switching. Being able to do the same thing by just referencing some location there would be really nice. So I tried it from the monitor cfff:0 n c200 c800l (listing) cfff:0 n c300 c800l (another listing) Both listings were the same, i.e. no switching was going on (like I said, I'm familiar with what these listings look like when the switching really does go on). Another way?