WTB: Emulex MT-02 controller

[Tony Duell]

> IIRC, QIC-02 uses handshaking; QIC-36 does not.

YEs. That's because QIC36 is a low-level 'raw' interfce, you're talking 
to the read/write head almost directly (a bit like a floppy drive 
interface), whereas QIC02 is a much higher level 'formatted' interface, a 
it like SCSI.


> 
> > The QIC36 ISA card I have in my junk box appaers to be essentially a
> > QIC-02 host interfaxce and a QIC-02-to QIC36 bridge on the same PCB. I
> > keep it because the ASICs on the board are the same as those on a separate
> > QIC-02 to QIC36 bridge that I sometimes use with my PERQ, and thus the ISA
> > card is a source of spares...
> 
> The QIC-36 ISA cards I have are Wangteks--they use an 8085 and a fair 
> number of house-labeled ICs to do their dirty work.  They're 

I think mine is a Wangtek. I do rememebr the 8085, an EPROM and a small 
SRAM as a data buffer. My boards both the ISA card and the 
closely-related QIC02 to QIC36 bridge came with 6116s (2K RSRAM), it was 
trivial to replace it witha 6264 (I think one link to change), which 
reduced the 'washing machine' effect no end...

> integrated units, though I suspect there's a fair amount of shared 

Oh ,ine is all on one PCB, but the circuitry looks (I do not have 
schematics) to be a ISA-QIC02 interface and a QIC02-QIC36 bridge on the 
same PCB. It may not be _exactly_ QIC02, but it's close. The ASICs are 
the same as on the QIC02-QIC36 bridge I have, and I think the EPROM is 
too. 

> logic with the Wangtek QIC-36-to-02 controller, as it also uses an 
> 8085 and has some of the same house-labeled packages on it.
> 
> My QIC-02 cards are by Alliance Technology; nothing to write home 
> about--just some LSTTL logic and maybe a PAL for address decoding.  
> About what you'd expect--and apparently clones of the Wangtek PC-02.

That's exactly what I'd expect. As I mentioned I added the Q(C02 
interface to my PERQ, it was just a handful of TTL parts (latches, 
buffers, address decoder). 

-tony