🚀 go-pugleaf

In article <894128738snz@zhochaka.demon.co.uk>, David G. Bell
<dbell@zhochaka.demon.co.uk> writes
>
>One problem I have come across with 8MB SIMMs comes from them being 
>'double-sided', effectively being two 4MB SIMMs.  I have a 486 
>motherboard which takes a set of 4 30-pin SIMMs, plus 2 72-pin SIMMs.  
>Put in two 8MB 72-pin SIMMs and the 30-pin bank is unusable.
>
>I now have those 8MB SIMMs in my Pentium machine.
>
>I've no idea why you're only able to get 15MB, but if that 2MB SIMM is 
>also a double-sider it's possible that half of that is vanishing.  Maybe 
>not all the slots will see both halves of a double-sider?  That's 
>certainly true of my current machine.
>
>       Had this problem when trying to go upwards from 16MB
[4 X 4MB 30pin SIMMS] To 32MB. 
        Tried two X 8MB in the 72 pin slots and it wouldn't work. 
        One was OK to get to 24MB total , but with two in place nothing
would run. Should have obtained a single 16MB SIMM , but they didn't
have single FPM 16MB in stock. Finished up with a VX pro motherboard
using EDO ram instead. Cyrix processor too - cheap and cheerful
        Cries of "shame!" from the experts, but it's still running well
six months later.

        I am about to do an upgrade on a 486 for someone. Will it do any
harm to try EDO memory in the machine to see if it works, or would it be
safer to buy FPM in the first place?
>

-- 
Tony Millington                         "Ooh, Gromit - it's Real Wensleydale!"
                                                                   [Wallace]
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