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- Path: jms.jeton.or.jp!noro
- From: noro@jeton.or.jp (Shigeru Noro)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Re: Microbotics VXL30 memory mapping
- Date: 25 Mar 1996 03:34:16 +0900
- Organization: JETON Network Service
- Sender: noro@jms.jeton.or.jp
- Message-ID: <4j44j8$1tg@jms.jeton.or.jp>
- References: <948.6652T1386T2066@norconnect.no>
- NNTP-Posting-Host: jms.jeton.or.jp
- X-Newsreader: mnews [version 1.18PL3] 1994-08/01(Mon)
-
-
- Vidar S$BÅS(Bensen <vidar@norconnect.no> on 22-Mar-96 wrote:
- >I have a VXL30 Accelerator with 8 Meg 32 bit Ram card in my A500..
- >VXL30 should allow copying The Amiga Kick Start Rom to Ram by using FASTROM
- >command. However, this results in following message:
-
- > - Memory cannot be allocated for FASTROM option -
-
- >My 8 Meg 32 bit Ram card is mapped low (at address 0020 0000).
- >If I map it high FASTROM works ok but the DMA function of my A590 controller
- >cannot access memory from 0800 0000 and up, unless I change the mask value
- >to 0X00FFFFFC which I have not yet tried.
-
- >All 16 bit FASTRAM is removed.
- >ChipRam=1 Meg.
- >The VXL documentation does not mention that FASTROM will not work when 32
- >bit Ram is mapped low.
-
- >I will appreciate feedback from someone having knowledge about
- >my problem.
-
-
- Hello, Vidar and your friend,
-
- What does it mean that the DMA function of your A590 controller cannot
- access memory from 0800 0000 and up? You mean you cannot join 32 bit
- ram to 16 bit ram, don't you? If so, of course, you should map 32 bit
- ram high. And try to put following commands on your user-startup file.
-
- SetVXL AddMem NoInter
- SetVXL FastROM NoInter
-
- I have used this product on my A500 with the GVP's A500-HD+ for two years
- over. 8 Mb 16 bit ram + 8 Mb 32 bit ram + 2 Mb Megachip. No problem.
- And I am getting access here by using this A500.
-
- I hope you well.
-
-
- ----------------------
- Shigeru Noro
- noro@jms.jeton.or.jp
-