rjg@tellab5.tellabs.CHI.IL.US (Roger Gale) (10/25/88)
I am having trouble with the new 'mergemem' utility supplied with AmigaDos V1.3. I currently have two memory boards in my Amiga 2000; one is a GVP Impact 2000 w/ 1 MEG of ram, the other is a Micron 2 MEG ram expansion. My hardware configuration is as follows: Amiga Zorro II slot #1 = GVP IMPACT 2000 Amiga Zorro II slot #3 = Micron 2 MEG All other expansion slots are unused. Autoconfig maps the memory spaces as follows: GVP IMPACT 2000 = $200000 - $2FFFFF Micron 2 MEG = $400000 - $5FFFFF When I invoke the mergemem utility, it responds by saying that no merge is possible. Is my problem due to the order that my boards are placed into my Amiga 2000? Also, I do not understand why there is a gap in the memory map from $300000 - $3FFFFF. Is this due to the autoconfig process or due to the hardware on these boards? I would like to learn more about the hardware of the Amiga 2000. Can anyone recommend a good book for this? Thank you very much in advance to anyone that can offer some help, it is much appreciated! - Roger Gale -
andy@cbmvax.UUCP (Andy Finkel) (10/25/88)
In article <1111@tellab5.tellabs.CHI.IL.US> rjg@tellab5.tellabs.CHI.IL.US (Roger Gale) writes: > >I am having trouble with the new 'mergemem' utility supplied with >Autoconfig maps the memory spaces as follows: > > GVP IMPACT 2000 = $200000 - $2FFFFF > Micron 2 MEG = $400000 - $5FFFFF Mergemem merges contigious memory. What you have there has a gap...thus it cannot be merged. The gap is due to the way autoconfig works, the way GVP set up their board, and the order you have the boards. You can't change either of the first 2, but you can do something about the last... Switch the order of your card. Then the 2 meg card will get autoconfiged first, ending up at 200000-3FFFFF. Then the GVP board will come in at 400000. Mergemem will be able to merge the memory area then. >would like to learn more about the hardware of the Amiga 2000. Can >anyone recommend a good book for this? Thank you very much in The A500/A2000 Technical Reference Manual, available from C.A.T.S (Commodore Amiga Technical Support) for $40. is a good place to start. -- andy finkel {uunet|rutgers|amiga}!cbmvax!andy Commodore-Amiga, Inc. "People who post news as root probably have other bad habits, too." Any expressed opinions are mine; but feel free to share. I disclaim all responsibilities, all shapes, all sizes, all colors.
jms@antares.UUCP (joe smith) (10/26/88)
In article <5097@cbmvax.UUCP> andy@cbmvax.UUCP (Andy Finkel) writes: >The gap is due to the way autoconfig works, ... The quick summary that Andy didn't mention is: "Autoconfig requires that 2-megabyte memory boards start at a 2-meg boundary." That's why you can's have 2-meg at $3FFFFF-$4FFFFF. >>Autoconfig maps the memory spaces as follows: >> >> GVP IMPACT 2000 = $200000 - $2FFFFF >> Micron 2 MEG = $400000 - $5FFFFF -- +----------------------------------------------------------------------------+ | TYMNET:JMS@F29 CA:"POPJ P," UUCP:{ames|pyramid}oliveb!tymix!antares!jms | | INTERNET: (Office-1.ARPA is no more) PHONE:Joe Smith @ (408)922-6220 | +----------------------------------------------------------------------------+
lphillips@lpami.van-bc.UUCP (Larry Phillips) (10/26/88)
In <1111@tellab5.tellabs.CHI.IL.US>, rjg@tellab5.tellabs.CHI.IL.US (Roger Gale) writes: > Autoconfig maps the memory spaces as follows: > > GVP IMPACT 2000 = $200000 - $2FFFFF > Micron 2 MEG = $400000 - $5FFFFF > > When I invoke the mergemem utility, it responds by saying that no > merge is possible. Is my problem due to the order that my boards > are placed into my Amiga 2000? Also, I do not understand why there > is a gap in the memory map from $300000 - $3FFFFF. Is this due to > the autoconfig process or due to the hardware on these boards? I Right. The memory configured in two chunks as a result of separately configured boards can only be merged if the addresses are contiguous. That 1 meg gap is the culprit. You can switch the order of the boards in order to configure them contiguously, and to allow you to merge them with mergemem. -larry -- If all the MSDos machines were laid end to end, they still wouldn't be as fun as a single Amiga. +----------------------------------------------------------------+ | // Larry Phillips | | \X/ {ihnp4!alberta!ubc-vision,uunet}!van-bc!lpami!lphillips | | COMPUSERVE: 76703,4322 | +----------------------------------------------------------------+