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- Xref: sparky comp.sys.ibm.pc.hardware:37188 comp.sys.ibm.pc.misc:17108
- Path: sparky!uunet!pipex!ibmpcug!robobar!stl!crosfield!mjh
- From: mjh@crosfield.co.uk (michael hember)
- Newsgroups: comp.sys.ibm.pc.hardware,comp.sys.ibm.pc.misc
- Subject: Re: HELP! Trying to upgrade memory.
- Message-ID: <15960@med1.crosfield.co.uk>
- Date: 20 Jan 93 08:48:57 GMT
- References: <1993Jan4.174315.62446@cc.usu.edu>
- Organization: Crosfield Electronics, Hemel Hempstead, United Kingdom.
- Lines: 26
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-
- I have a 486-66, ALI-M1409 chipset motherboard with 1991 AMI bios
- and have experienced the same problem only worse....
-
- It had 4 1Meg SIMMs in bank 0 and everything was fine with this config
- I then added 4 1Mx9 70nS SIMMs in bank 1 and the system now tells me that
- I only have 1Meg of RAM and no extended memory.
- If I take the SIMMs out of bank 1 it goes back to 4Meg again
- There are no DIP switches or jumpers on the board for memory config.
-
- The new SIMMs look slightly different to the old SIMMS in as much as the
- old SIMMs have 3 chips all the same size with 8 legs on each side
- 2off Pt no.- HM514400AS7
- 1off Pt no.- HM511000AJP7
-
- new SIMMs have 3 chips 2 large, 1 small with 4 legs on each side
- 2off Pt No.- M514256A-80J (OKI)
- 1off Pt No.- M51C256-80 (OKI)
-
- Lets hope someone out there is clever enough to solve our problems
-
- regards
-
- Mike Hember.
-
- email - mjh@crosfield.co.uk Tel ++44-0442-230000 x3221
-