Date: 2002-06-10 10:40:57
Hi Nicolas, >It looks like it just maps in as an external ROM at $8000, but it might be >possible that it also runs from the internal ROM socket. Just connect the >EPROM to the data and address lines, connect the EPROM's /CS to /ROML and >leave /GAME and /EXROM alone. That should do. The Commodore REUs offer such a >socket, but it's also easy to make from any C64 EPROM cartridge (connect the >extra address line and open /GAME and /EXROM). Thanks for the information. Might try the EPROM in my 1750REU (will have to put a socket in first) or a cart as you say. >but then fails >with the ROM test. I'd have to install a US ROM into a PAL >machine to see if >that works ... >So the ROM is nice, but it had to be changed to do the following things: >- accept all ROM versions >- proceed when a test fails These are important considerations. Every one of the C64 ROM checkers flag an error if a non-standard ROM is used (eg JiffyDOS), but pathching to allowing the program to proceed would overcome this as I don't know that you can fully validate every ROM every made for the C64/128 - maybe just the JMP-Table?) Regards, Nick PLEASE TAKE NOTE: The contents of this email (including any attachments) may be privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this email in error, please advise us immediately (you can contact us by telephone on +61 8 9441 2311 by reverse charge) and then permanently delete this email together with any attachments. We appreciate your co-operation. Whilst Orbital endeavours to take reasonable care to ensure that this email and any attachments are free from viruses or other defects, Orbital does not represent or warrant that such is explicitly the case (C) 2000: Orbital Engine Company (Australia) PTY LTD and its affiliates Message was sent through the cbm-hackers mailing list
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