1. RE: [OT] sdram info needed
gertie at visionsix.com wrote:
>
> Does anyone have a schematic on how to make a commonly available
> generic dimm sdram/edo look like a plain olde static ram? With 3gigs of
> data, at 60ns/access/byte, it will take 3 minutes to bruteforce search
> it, and
> obviously using software on top of an OS will take considerably longer.
> I am
> thinking of reviving a 20yr old idea, which wasn't useable back when
> dram
> came in 16Kx1 chips and was $1500/megabyte. But to make it work, i need
> to use the mass produced and much cheaper computer memory forms,
> which i am lacking info on. Online references or available book sources
> welcome.
>
> Unless someone has 10,000's of 3 to 10 gigs of the olde dip chips they
> want
> to get rid of?
>
> Thanks,
> Kat
>
>
hi Kat
now i am curious. i think i still have some old manuals for memory
boards. i started computing with an S100 system (cromemco)(pre-ibm pc)
and had added a 'ram drive' to it. is that your project?
i had bought the ram drive already assembled.
i had thought i seen a ram drive using simms one time, while browsing
the internet. it may even had been external.
myself , i have always liked removable/expandable storage ideas.
hmm. to create a juke box with those flash memorys , now that would be a
project. so the memory would not end up in landfills.
rudy
rltoews ilos net
lotterywars
2. RE: [OT] sdram info needed
- Posted by gertie at visionsix.com
Mar 27, 2003
On 27 Mar 2003, at 10:12, rudy toews wrote:
>
>
> gertie at visionsix.com wrote:
> >
> > Does anyone have a schematic on how to make a commonly available
> > generic dimm sdram/edo look like a plain olde static ram? With 3gigs of
> > data, at 60ns/access/byte, it will take 3 minutes to bruteforce search
> > it, and
> > obviously using software on top of an OS will take considerably longer.
> > I am
> > thinking of reviving a 20yr old idea, which wasn't useable back when
> > dram
> > came in 16Kx1 chips and was $1500/megabyte. But to make it work, i need
> > to use the mass produced and much cheaper computer memory forms,
> > which i am lacking info on. Online references or available book sources
> > welcome.
> >
> > Unless someone has 10,000's of 3 to 10 gigs of the olde dip chips they
> > want
> > to get rid of?
> >
> > Thanks,
> > Kat
> >
> >
> hi Kat
> now i am curious. i think i still have some old manuals for memory
> boards. i started computing with an S100 system (cromemco)(pre-ibm pc)
> and had added a 'ram drive' to it. is that your project?
> i had bought the ram drive already assembled.
I remember the S100 stuff, but i never had one myself. I did have a ZX80,
VIc20 and C64. The C64 still works fine. I have books on chips like the 6116,
and others of that era. For massive memory those chips are still far too
expensive, in parts cost and assembly time and power use. I expect i will be
using the smallest simm or dimm modules i can reasonably get. I am more
interested in width than depth of the memory. I don't have books on the
simms or dimms, or application notes and gotchas.
Kat
