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- Path: news.onr.com!usenet
- From: icole@onr.com
- Newsgroups: comp.sys.cbm
- Subject: Re: Vic-20 Ram Expansion
- Date: 4 Apr 1996 03:54:31 GMT
- Organization: Onramp Access, Inc. 512-322-9200
- Message-ID: <4jvh5n$r9n@mari.onr.com>
- References: <4jnplp$3l8$1@mhade.production.compuserve.com>
- Reply-To: icole@onr.com
- NNTP-Posting-Host: onramp5-11.onr.com
- X-Newsreader: IBM NewsReader/2 v1.2
-
- In <4jnplp$3l8$1@mhade.production.compuserve.com>, Dan Amborn <103013.1114@CompuServe.COM> writes:
- >I have a question about Vic-20 ram expansion and was wondering if
- >anyone has some experience with it. I've got a 16k cartridge but
- >whats needed in order to have a fully expanded Vic? I saw that
- >24k was the largest cartridge for it. But a memory map I
- >downloaded from the internet showed this:
- >
- >>0400-0FFF 1024-4095 3K expansion RAM area
- >1000-1DFF 4096-7679 User Basic area
- >1E00-1FFF 7680-8191 Screen memory
- >>2000-3FFF 8192-16383 8K expansion RAM/ROM block 1
- >>4000-5FFF 16384-24575 8K expansion RAM/ROM block 2
- >>6000-7FFF 24576-32767 8K expansion RAM/ROM block 3
- >
- >According to this in order to have a fully expanded Vic-20 you
- >need a 27k cartridge which doesn't exist right? Or is it possible
- >to use multiple expansion cartidges by using a cartridge port
- >expander. Also does anyone know if its possible to expand my
- >existing cartridge to 27k? Any help would be helpful.
- >
- >--
- >Dan Amborn
- >103013.1114@compuserve.com
-
- With an expansion port multiple ram expander cartridges can be used. Inside of
- most of them is a set of switches which determine the starting address of the
- memory.
-
-