Howdy. I have been using VICE to finish up an ooooold project of mine: porting Infocom's Zork to the PET. To that end, I have disassembled the interpreter, commented it and added conditional code to allow it to compile for the PET, the VIC-20 and (for testing purposes) the C-64. The VIC-20 version works under VICE (if you compile it for ROM space at $A000 and have a 32K RAM VIC), but I am having persistent problems wih the PET version. I need an external review of what I've done. The biggest difference is, of course, zero page usage. The second difference is the lack of I/O support in the PET ROMs compared with the C-64/VIC KERNEL. I have written up a set of routines to provide C-64-style I/O support, and those seem to be fairly stable (they are mostly wrappers and jumps to the middle of the PET ROMs). What I haven't done is to test on a real PET. My 8032 is packed away. If you would like to test, you should have a real PET (4.0 ROMs), a 4040 or 2031 drive, and a way to get a program from the 'net to your PET. The game comes up and runs. I can navigate around the white house. What isn't working is direct objects. I can type "OPEN" and the game will assume "WINDOW" and open the window, but if I type "OPEN WINDOW", I get an error message. I'm not certain that my problems aren't VICE related, so I ask for a real test. Any takers? -ethan - This message was sent through the cbm-hackers mailing list. To unsubscribe: echo unsubscribe | mail cbm-hackers-request@dot.tcm.hut.fi.
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