douglasg@hpgrla.HP.COM (@Douglas Genetten) (08/13/88)
How readily can one do I/O onto a GPIB card using Xenix/386? Thanks, Doug Gennetten Rochester Institute of Technology Schools of Printing and Imaging Science Rochester, NY (716) 427-8866 PhoneMail: (303) 350-4474
sandy@turnkey.TCC.COM (Sanford 'Sandy' Zelkovitz) (08/18/88)
In article <4960002@hpgrla.HP.COM>, douglasg@hpgrla.HP.COM (@Douglas Genetten) writes: > > How readily can one do I/O onto a GPIB card using Xenix/386? > > Thanks, > > > Doug Gennetten > > > Rochester Institute of Technology > Schools of Printing and Imaging Science > Rochester, NY > > (716) 427-8866 > PhoneMail: (303) 350-4474 National Instruments sells there GPIB-3 IEEE-488 board, along with device drivers for Xenix 286 and Xenix 386. We are presently using the board to control high speed instumentation that the company that I work for, manufacturers. Under Xenix 386, we have timed the transfers to be an average of 70khz. The test was performed in the following way: 1) Two Compaq 386/20s tied together with the use of two IEEE boards. 2) A total of 5 megabytes of data was transferred in 32K chunks and the data was written to a disk file. 3) The AVERAGE time was calculated by starting the clock when the first byte was trasnferred and stopped when the last byte was written to the disk. If you were only interested in small transfers, the transfer rate went up to 105khz ( not the 150 that National claimed; however, acceptable! ). We never tested National's software under Xenix286. Sanford ( Sandy ) Zelkovitz ........!ihnp4!hermix!alphacm!sandy ........!trwrb!ucla-an!alphacm!sandy ........!uunet!ccicpg!turnkey!alphacm!sandy