Start converting code to Assembly languageīefore this emulator is even useful, it needs to be MUCH FASTER. I could use some help with most of these tasks - anyone who.
COMMODORE 64 EMULATOR CLASSIC RELOAD PC
I can execute an opcode one at a time, put breakpoints in to stop at a certain memory location (essentially freezing the C64 dead in its tracks), change register values or even set the PC to a new spot.Check out the screen shot! (I know, it looks similar to yesterday's post, but it is definitely cooler because it really works now).Īlso, check out my massive debugging system, which displays the state of all of the C64's registers, stack pointer, and program counter.Apparently, I forgot to port an ABS (Absolute Value) function to SPIN from my original.This was due to a bug that took me all day to find.This was really exciting - yesterday's post was really only "almost working" because it was coming back with an error on the screen.Today marks the milestone where I successfully ran the emulator, completely booting to its "Ready." prompt. It would probably take about 45 minutes to just get through the C64 boot-up process!ĭoing my part to keep the Commodore 64 alive! I might just have to do this on those RAMTRON chips - even for testing. I'm not so sure this will be the best solution. Consider how many reads/writes this thing does. I think it could be the COMM control - it might have a memory leak or something. The Kernal code does several loops, testing each memory location. It gets to a certain point and just seems to go off into no-man's land. The RAM test takes a really long time, reading, writing, and then reading again. this is where the program is now hanging. Update: The emulator code seems to be doing its RAM test just fine - to a point. It is quite a ways off, though - still have to get it working. Yeah, I'm open to just about any format - I just want to be able to take my "Commodore 64 Laptop" anywhere and play my old favorite games and do my Commodore programming.
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