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- Newsgroups: comp.sys.amiga.hardware,comp.sys.amiga.programmer
- Subject: Re: MMR's and 32bit DRAM
- Message-ID: <1992Jul26.003329.923@msus1.msus.edu>
- From: lkoop@TIGGER.STCLOUD.MSUS.EDU (LaMonte Koop)
- Date: 26 Jul 92 00:33:27 -0600
- Reply-To: lkoop@TIGGER.STCLOUD.MSUS.EDU
- References: <1992Jul24.155317.27432@cs.uwp.edu>
- Organization: St. Cloud State University, St. Cloud, MN
- Nntp-Posting-Host: tigger.stcloud.msus.edu
- Lines: 38
-
- In article <1992Jul24.155317.27432@cs.uwp.edu>, litz@cs.uwp.edu (Jeffrey Litz) writes:
- >
- >!!! Attention all Mega Midget Racer owners with 32bit DRAM !!!
- >--------------------------------------------------------------
- >
- >Have you ever wanted your 32bit RAM to auto-config so that the entire
- >system is running out of 32bit RAM? I'm not talking about moving kickstart
- >into 32bit RAM. I'm talking about having graphics.library, intuition.library,
- >drive buffers, etc., etc., etc. in 32bit RAM? (i.e. the 32bit RAM is added
- >before most system start-up routines are executed.)
- >
- >Well, I wrote a program that accomplishes such. Overall system performance
- >is increased slightly - over and above that of moving kickstart into 32bit.
- >BUT, if you have a NON-DMA hard drive controller, there's a big performance
- >increase - since the buffers are now in 32bit RAM. (I have no idea how DMA
- >controllers will react to this - probably very poorly.)
- >
- >The only thing that doesn't get moved - YET - is exec. :-( Also, it only works
- >under 2.04 with 32bit DRAM. And I've only been able to test it with the 8meg
- >board. (It doesn't "pseudo-auto-config" any SRAM since I don't have any to
- >test it with.)
- >
- >Now, is there any type of demand for such a program? (I have no idea how many
- >MMR's are out there *WITH* 32bit DRAM.)
-
- Sounds like the program MMR_BootDRAM I wrote about 6 months ago :). In any
- case, releasing this can't hurt, as there are undoubtedly more people out
- there who could use it. In fact, I would not mind seeing it in action myself.
-
- An aside note: You can't get exec into the 32-bit memory space with this
- method. To add the memory to the system free lists, exec must be up and going,
- and at that point it exists already outside the target memory space.
-
- ----------------------------------------
- LaMonte Koop -- SCSU Electrical/Computer Engineering
- Internet: lkoop@tigger.stcloud.msus.edu -OR- f00012@kanga.stcloud.msus.edu
- "You mean you want MORE lights on this thing???"
- ---------------------------------------------------------------------------
-