Single-sided 32mb SIMMS wanted - rare as hens' teeth?

[X-ray]

@ Acill

Thanks for offering, but I really do need single-sided. There is just no clearance for double-sided. I have spare 32mb double-sided, of various types, and not one will fit.

[CU_AMiGA]

Hey Yo!

I have a single sided 64meg simm, i swapped my double sided 128meg simm for it. I am not sure whether the single sided 32 simm are that dear, i think you can get single sided 32/64 simms quite cheaply on ebay. The real chestnut here though is the single sided 128meg simm, now these are rare and dear. I think our Only Fools And Horses Maniac ones a couple (that he uses himself :-( ).

Regards,

[Framiga]

Single side 32MB SIMMs doesn't works in CSPPC or better . . . are recognised as 16 MB each :-(

EDIT- at least EDO one . . . i'm not 100% sure about FPM.

[Star69]

@ X-ray

I have a couple of 16 meg simms (single sided) you can have for postage cost if you want.  I have no idea of the timings for them, they came out of an ancient p1 pc.

[Vincent]

Hmmm, seems you haven't mentioned Power Computing in this thread...

They have 32MB SIMM slim £49.95 and 64MB SIMM single sided £99.95.  Probably expensive (I have no idea about simms/dimms/ddr/whatever-abbreviation-it-is-this-week anymore).

Doesn't say what speed they are, but a quick email about it could be helpful ;-)

I haven't found my simms yet, but I'll keep looking.

[X-ray]

@ Framiga

Aha, once again your knowledge is very useful, as the ones I ordered from ebay are EDO. One is recognised as 16mb and the other is probably faulty because it crashes the machine.

@ Star69

Thanks for the offer of the 16mb SIMMS but I have those currently installed, which gives me 96mb in total on the board. (I have a pair of SS 16mb and a pair of DS 32mb)

@ Vince

Those prices from Power Computing are quite steep.

[x56h34]

I think that Framiga may be right. Any kind of non-standard format of 72-pin simms usually doesn't work on Phase 5 accelerators, so it's very possible that these single sided 32MB simms wouldn't work, or at least they would show up as 16MB each.

I have four slim double-sided 32MB modules (Kingston brand) that have 2 memory chips per side. These are probably the slimmest simms that I've ever seen. Every single Phase 5 card that I tried those in (1230-IV, BPPC, CSPPC, CSMK-II) detected the simms as 16MB each. Even my friend's old PC Pentium 1 failed to recognize them as 32MB each...yet the label on them clearly says 32MB, as well as specs on the web.

In any case, your best bet is to find a standard 32MB double sided simm, with extra small memory chips. I am sure that lots of them exist out there that would work with Phase 5 cards just fine.

You need to be patient. :-) That, or like I said before, try to desolder the oscillator socket and put the oscillator back onto the PCB as it once was. Maybe get a skilled person to do this for you, if you are not confident enough of pulling the job out yourself.

[Framiga]

I think that Framiga may be right. Any kind of non-standard format of 72-pin simms usually doesn't work on Phase 5 accelerators, so it's very possible that these single sided 32MB simms wouldn't work, or at least they would show up as 16MB each.

i have here a couple of this "things": 32MB 50ns SS 4 thin chips, seen like 16MB each.

Last but not least, i suspect that this POS, has fried my 1st CSPPC . . . argh!!!  

[x56h34]

@Framiga:

:-(

I guess it's not worth it when it comes to messign with a CSPPC card in order to boost performance. It's a very fragile card, so no overclocking, no 68060 cpu removal (weak socket), no pressign down on the PPC fan/heatsink, use standard memory...and the list goes on. :-)

[X-ray]

Well, folks, despite my solemn statement that I wouldn't mess with my PPC card, I gave up last night after trying several different single-sided SIMMS and having no success with them - not even on my DKB3128 board. So, I took the PPC card out and looked at it for a long time. Then I turned it over and looked at it for a long time. Slowly the little tendrils of adventure manifested themselves as a slight curling of my lip and a gleam in my eye. I forgot all about the trouble I had with the spacers. I forgot that X-ray + soldering iron = potassium permanganate + glycerin. Ja, my friends, I forgot my station in life and I took a soldering iron to my PPC board...

...and I now have an 060 oscillator that sits a lot lower than it used to. In fact it sits low enough for me to use double-sided SIMMS in all my banks. The nice thing though, is that I didn't screw up my board. Many of you would say 'pah' and shrug as if I had announced I had successfully farted without soiling myself. Nevertheless I am pleased to say my Miggy has all the RAM it is entitled to: 256 + 16 + 2.  :-)

Now...out of curiosity...is it just bad luck that no 32mb single-sided SIMM has ever worked on my PPC card or on my DKB board? Do I have to phone Scully and Mulder? Or is this universal? Does anybody here use 32mb single-sided SIMMS on a Phase 5 Cyberstorm PPC or a DKB3128 board?  :-?

Edit: I blame X56 for corrupting me at every turn  :-P

[x56h34]

Job well done! :-)

Now go to your nearest river or a lake and throw in your soldering iron, so that you could not mess with the ppc card again. ;-)

Also, don't forget to post pictures of your handywork so I can criticize it. :-D :-P ;-)

[BadBigBen]

Too bad I got here late for the POST...

I have a 32 mb, FPM @ 60ns Simm with flush mount chips (total thickness of the SIMM is 2.5mm) that is used at the moment on my Blizz1230... it came out of a PC, which recognized it as 16mb and at the time I had an 8mb Simm stuck in my 1230, so I replaced it with it, and to my surprise it was a 32mb simm, ran a MEM test on it and it functioned without flaw...

I would have sent you this baby for the reimbursement of the Shipping Charges... but glad you got it to work anyhow...

[x56h34]

@BadBigBen:

He'd need at least a pair of those in order for them to possibly work as CSPPC memory controller is 64-bit so memory needs to be installed in pairs.

[X-ray]

@ BadBigBen

Thanks for the offer anyway, my good man. I appreciate it, but my problem is now solved. (Thanks also to Vince who offered me a SIMM earlier).

[BadBigBen]

@x56h34 - this I did not know... never had a CSPPC, and now they are just too plain EXPENSIVE...

@X-ray - no problem... just glad you got it to work...