From: msmcdoug@no.spam.iinet   
      
   Larry wrote:   
      
   > Later, they went to a WD1010-based controller.   
   > The WD1002-05 or WD1002-HDO (the second has no floppy interface) was a   
   > general purpose HD interface for MFM drives. I think that for TRS-80's, it   
   was a   
   > hobby project to make it work.   
      
   Thanks for the detailed info!   
      
   Looks like the WD1010 is the way to go.   
      
   The reason I ask is that I've been looking for quite some time now for some   
   hardware to design for the hobbyist market, and I noticed someone lamenting   
   that no-one has developed a compact flash adapter for the TRS-80 yet. So,   
   not knowing anything about TRS-80 hard drives, I thought I'd look into the   
   feasibility of doing it for a reasonable cost.   
      
   I've already implemented a working model I/III in an FPGA, together with a   
   crude WD1793/floppy emulation. I've also got access to an FPGA platform that   
   already has compact flash on it, so my plan is to first emulate the WD1010   
   in the FPGA and then get NEWDOS or LDOS reading from a compact flash-based   
   hard disk. From there it would be a simple matter of designing the most   
   cost-effective hardware to allow the design to be plugged into a real TRS-80.   
      
   Thanks again for the info!   
   Regards,   
      
   --   
   |              Mark McDougall                | "Electrical Engineers do it   
   |     |   with less resistance!"   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)