Hello, Jed.  If the "Trainer" team wants me to build up 27
   prototype Multisync II boards, might you know if there are any
   128Kx8 VRAMS 120ns around anywhere?  Or perhaps 256Kx4 DRAMS?
   I'd be looking for 216 VRAMs and 108 DRAMs (8 per and 4 per).
   If there aren't any over in your building I'll ask Mary B to
   get some.  Thank you for any input you can give.

					Rob

Rob, there are some things you should know:

   1. The parts list you seem to be building the boards from appears to
      be a preliminary version for Street Driver.

   2. I informed the Training group several months ago that they need to
      come up with their own parts list. Apparently they have not done so.
      This will lead to several people doing a bunch of otherwise
      unnecessary work.

   3. As far as I know, the Training group is not using the MSP. If this is
      true you do not need the following:

      MSP Parts:
	(1) 	137502-001 	74F244		
	(1)	137547-001	AS573		
	(2)	137440-001	ALS245		
	(4)	137694-120	256Kx4 DRAM	
	(1)	137538-002	34010-50	
	(1)	144008-005	50 MHz Osc	

      Notice that the 256Kx4 DRAMs are among the unneeded parts.
					
   4. I believe they are using the 12 Bit A/D which is not used by Street
      Driver. The 12 Bit A/D and associated parts are not on the Street
      Driver parts list.

   5. Note: VRAMs are specified as 120 ns with alternates of 100 ns and 
            80 ns.

	    DRAMs are specified as 120 ns with an alternate of 100 ns.

   6. The MultiSync II with sockets has failed and I have no way to test
      VRAMs other than to build boards, which isn't going to happen.
      (There was only one of the two boards with sockets built because
      Chris Downend decided that Karen had more important things to do.)

      There are currently two approved VRAMs:
		Toshiba: TC528126BJ-10
		Micron:	 MT42C8128DJ-10

      The boards we have already built used mostly Micron MT42C8127DJs which
      have been discontinued and TI TMX48C121DZs. The TMX means it is a
      Pre-Prod part which I will not approve. The Production parts (TMS)
      were supposed to be out last April; they weren't. Then they were 
      supposed to be out in June. Phil, the TI guy, doesn't know anything 
      about it (or anything else for that matter).

      When you buy VRAMs please try to get some Micron MT42C8128DJ-8
      and some TI TMS48C121DZ-10 and -80 if they are available. No TMX
      parts, please.
      
  7. This word just handed to me: ManMan reports there are 4000 VRAMs in
     inventory. 

     137693-100  IC,VRAM,128KX8,100NS,CMOS,40P SOJ

      
Regards,

	Jed