🚀 go-pugleaf

Does anyone have experience with connecting a ps printer to SGI
boxes via the SCSI {1,2} bus ?

I have a zippy Xante ps printer. It is quite fast, and I have
it connected via a centronics port. I have a breakout box on the
line, and I see lots of handshake activity. I think that the
printer is out pacing the parallel port on large bitmap images.
The printer ready line is can be trapped with no data on the data lines.

This wonderprinter has a SCSI port, and is designed for direct connection
to Apple machines. 

Any insight about connecting this to a IRIS ? 

What is the max throughput on the parallel lines ?
What is the bottleneck in getting data out a parallel line ?
The CPU wait line shows lots of physical io waiting, like the
whole CPU wait bar is light blue (whatever that means!).

What is the throughput on the SCSI 1 or SCSI2 bus ? What are the
bottlenecks there ?

Would it pay to write/debug a SCSI driver for this beast ? Is there 
lp scripts that talk/listen to the SCSI port ? What are the
issues to connect a program to a SCSI port ? Kernel drivers ?
I don't know if the printer will try to converse with the host
via the SCSI port.

Cheers!

Dan.
| karron@nyu.edu (e-mail alias )         Dan Karron, Research Associate      |
| Phone: 212 263 5210 Fax: 212 263 7190  New York University Medical Center  |
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