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- Path: seagoon.newcastle.edu.au!brushtail!news
- From: cjb@brushtail.hna.com.au (Chris Baird)
- Newsgroups: comp.sys.cbm
- Subject: Re: VIC20 cart grabbing
- Date: 04 Jan 1996 21:23:12 +1100
- Organization: The Telebank of Global Nirvana
- Sender: cjb@brushtail.hna.com.au
- Message-ID: <87vimsi7hq.fsf@brushtail.hna.com.au>
- References: <4ce84a$cpt@antares.lu.erisoft.se>
- <87ybrofltk.fsf@brushtail.hna.com.au>
- NNTP-Posting-Host: brushtail.hna.com.au
- In-reply-to: cjb@brushtail.hna.com.au's message of 04 Jan 1996 18:41:56 +1100
- X-Newsreader: Gnus v5.0.13
-
-
- > Hello, I just read Ward Shrake's document on getting
- > VIC20 carts to disk. I have an idea on making
- > it a bit easier and safer.
- > Cut the blk5 wire that goes to the cartport,
- > and connect a switch like this:
- >
- > /
- > /
- > -----
- > | | > pin 2 to blk5 on the cart port
- > | | > pin 1 to blk5 before the cut
- > ----- > pin 3 to +5V DC
- > | | |
- > 1 2 3
- >
- > This way, you can disable the cart at bootup,
- > and enable it later to save the contents to
- > disk. I haven't tried this yet, since I'm away
- > from home for quite a while. :(
-
- It works-- and it's an old trick, one that even the authors of the
- cartridges knew of (almost twenty years ago!), and hence why you'll
- find Omega Race, et al., have extra code scattered throughout the
- program which scribbles all over the ROM (now RAM) area. :)
-
- --
- Chris,,
-