🚀 go-pugleaf

In article <1992Nov12.103707.8667@iscsvax.uni.edu> simmons5275@iscsvax.uni.edu writes:
>I recently was reading about a solid state disk drive composed of
>banks of sram from one of the 1990 issues of radio electronics. I like
>the idea but the card that they had could only handle 512k. How 
>possible would It be to create the same idea, ie. ram backed up with
>battery for when the sys is off and set up like a disk drive with the 
>driver software, for 16-->who knows megabytes. Seems to me you could take
>a jdr microdevices 16 meg card that uses simms, and add some batery
>circuitry and write a driver for the drive. If this is possible I 
>would be very interested in it. Just think of how lightning quick
>that sucker would be. Almost the ideal place to install windows. I am 
>aware of current ramdisk software but it cant save on power down so it
>doesnt really interest me. I would be leaving my comp on most of the
>time anyway but if th power went out Id hate to have to reinstall everything
>again. Therefore the only logical solutin to me is a 32 meg solid state 
>disk drive. If anyone has info on either the existence or the feasibility 
>of this please let me know asap.
>

I think it is not practically possible. You must refresh those
DRAM at ms interval, so if you had a SOLID DRIVE based on DRAM,
you have to use an BIG bettery to back it up, as big as an
auto battery ? I don't know. But I guess this is why those RE guys
using SRAM in their version of SD.
Even though you run up window from a SD, chances are your VGA card 
may not fast enough to refresh the monitor screen.


Jianqing Hu                         |  Internet: thssjyh@iitmax.iit.edu
ECE Dept.  Illinois Inst. of Tech.  |  
Chicago, IL 60616                   |  Office phone: 312-567-6971