Tristan Mumford wrote:
sicklittlemonkey wrote:On Feb 20, 9:16 pm, Tristan Mumford <xtristan.xmumf...@xgmail.xcom> wrote:Unless I'm mistaken, which is not entirely unheard of, I should just be able to attack it by just poking to 0x180 ...I mean 0xC180 of course :)Yes. Please do that. ;-)I put the files up on my site, then checked them. Big mistake. The softswitch works fine in the monitor. I could change banks and list the contents. However changing them with a POKE and then saving did absolutely nothing. All the four ROM files are the same. Any ideas?
Use the monitor to move the banks to some contiguous region of memory, then write them all out at once. (Something must be resetting the bank register prior to the disk write.)
It also appears as if pages 4-7 are accessible, just all unwritten. Ie FF.
So the designer *did* implement a 3-bit bank switch! That opens up some interesting possibilities for alternate EPROMs... -michael NadaNet networking for Apple II computers! Home page: http://members.aol.com/MJMahon/ "The wastebasket is our most important design tool--and it's seriously underused."