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- Path: news.packet.net!usenet
- From: stimber@tbag.org (Scott Timberlake)
- Newsgroups: comp.sys.amiga.emulations
- Subject: Re: 386BB Help
- Date: Mon, 19 Feb 96 09:45:45 EST
- Organization: Tampa Bay Amiga Group
- Distribution: world
- Message-ID: <19960219.50FC00.9209@tbag.org>
- NNTP-Posting-Host: tbag.org
-
- PGD> I have used a 25 MHz 386 Bridgeboard, with 1Mb RAM, in a 4000/030 for
- PGD> the past 2 years. Its fitted with its own 3 1/2 FD, a 120Mb HD, a VGA
- PGD> card and an I/O card with its own mouse. I have run all kinds of MSDOS
- PGD> programs without any problems, plus the ADOS and MSDOS bridge worked
- PGD> perfectly.
-
- PGD> Having decided to have a go with Windows 3.1, I recently installed an
- PGD> extra 2 Mb of ZIP RAM (1M X 4), making 3Mb in total, but because I
- PGD> could get only 70ns ZIPS the only way I could get the Bridgeboard to
- PGD> recognise the extra memory was to set DRAM Wait States to '1', and Page
- PGD> Mode to 'Disabled'. However, it seems the side effect of doing this,
- PGD> is that when the card boots I get "No Janus Memory Structure found!".
- PGD> Following the boot, Windows boots up OK, but on some occasions there is
- PGD> no response from the keyboard. Also, of course, aread, awrite and
- PGD> atime do not work.
-
- PGD> I would appreciate some help on this. Obviously there is some sort of
- PGD> addressing conflict, but I am not at all experienced with the
- PGD> Amiga/MSDOS interface.
-
- Wait states have nothing to do with memory type, just speed. It appears that
- you have static column zips instead of the preferred page mode, but at 70ns,
- they are definitely fast enough. That is the same speed I have. I can't
- imagine why it won't boot unless wait state is set to one...
- BTW, for Windows 3.1, you REALLY want to have 4m ram, not 3m. Virtually all
- Windows programs require 4m, and many require 8m. With that little memory,
- you also won't be able to run with a disk cache of any appreciable size, which
- really does help speed up your system. (And yes, I realize that the reason you
- have 3m ram is so that you could use the 256x4s that came with it. But the
- Windows programs aren't going to care about that ;-)
- Scott
-
- * Q-Blue 2.0 [NR] *
-