Emu XL-7 & MP-7 User's Group

--- On Sat, 5/1/80, Ivan Chaparro <jibarosoul@...> wrote:

From: Ivan Chaparro <jibarosoul@...>
Subject: Re: [xl7] Re: FLASH SIMM
To: xl7@yahoogroups.com
Received: Saturday, 5 January, 1980, 8:37 AM







 



  


    
      
      
      


Im in, just wondering if you could clarify how this 
would integrate into a maxed out command station. Eg: all four roms filled will 
i have to sacrifice one? will it just pop into one of the existing 
slots?

  ----- Original Message ----- 
  From: 
  Geert 
  To: xl7@yahoogroups. com 
  Sent: Tuesday, February 16, 2010 9:47 
  AM
  Subject: [xl7] Re: FLASH SIMM
  
  
  
  definately in.

--- In xl7@yahoogroups. com, Jack Pratt 
  <woodsworth1@ ...> wrote:
>
> Howdy.
> 
> I 
  have created a schematic for a FLASH SIMM. I can send a copy to anyone 
  who is sufficiently interested (rather than posting it to everyone [which 
  I thought would be bad etiquette]) - so pm me if you want to see it.
> 
  
> This FLASH SIMM is not the same as DRAM SIMM mentioned previously, 
  but has some similar features. The intention is to have two 1Gb FLASH devices 
  populated (total of 256MB FLASH) which would allow as many as seven 32+4MB 
  images [32MB = wave memory, 4MB preset memory].
> 
> What The SIMM 
  is does mirrors up to four slots - it is actually in one slot but 
  can respond to requests for any of the slots, but you can turn 'off' that 
  response so you can put a physical ROM (or other FLASH) in that slot. Of cours 
  that only accounts for 4 ROM images, the other may be accessed by either a 
  switch or possibly in the future the OS could be modified so that there would 
  be a menu item that allows the user to select which image appears in any 
  given slot. The SIMM has 4 footprints for FLASH devices and if Numonyx every 
  release a 2Gb part then the SIMM could support 1GB of FLASH or 28 images. 
  I'm not planning on altering the OS in the near future so don't hold 
  your breath.
> 
> Unfortunately this FLASH SIMM will probably not 
  be programmable in the old way [Ultra for wave memory, Proteus for preset 
  memory] so I need to also produce another board to read and write the board. 
  This solution would be cheaper than buying an Ultra sampler but it wouldn't be 
  a sampler!
> 
> In order to proceed I need to know if anyone is 
  interested in this SIMM. Cost would be about USD150 for the SIMM, and about 
  USD125 for the programmer. Not sure on the exact prices because it will depend 
  on the PCB manufacture cost, but I figure I need to sell about 20 of them to 
  make it worth while. Not asking for money, but just a show of 
  hands.
> 
> Let me know what you think.
>