http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=220038281851&fro… National Instruments AT-GPIB/TNT+ IEEE 488.2 182785E-01 If this is the same as the card below, the analyser software which can sniff the bus, runs under Windows 95, 98 & ME, capturing HP-IB bus traffic into the PC memory. http://cgi.ebay.com/National-Instruments-AT-GPIB-TNT-GPIB-Analyzer_W0QQitem… The following is the beginning of an HP150 boot from a 9133 drive, captured with a TNT+ using the NI Analyser and formatted to text. Capture Stimulus : Data, Command, Control, Handshake, Parallel Poll Handshake Rate : None ------------------------------------------------------------------------------------ M Timestamp Data Control mi s ms us ns A H 87654321 E A S R I NR ND D ------------------------------------------------------------------------------------ -- -- -- 80 10000000 0 0 0 0 0 0 0 0 0 0 0 47 950 80 10000000 0 1 0 1 1 0 0 0 ATN^ REN^ IFC^ 0 0 0 0 100 bf 10111111 0 1 0 1 1 0 1 0 NDAC^ 0 0 71 571 200 bf 10111111 0 1 0 1 0 0 1 0 IFCv 0 0 719 102 550 bf 10111111 0 0 0 1 0 0 1 0 ATNv 0 0 0 0 150 0 00000000 0 0 0 1 0 0 0 0 NDACv 0 0 0 2 950 0 00000000 0 0 0 0 0 0 0 0 RENv 0 0 0 48 350 0 00000000 0 1 0 1 1 0 0 0 ATN^ REN^ IFC^ 0 0 0 0 100 bf 10111111 0 1 0 1 1 0 1 0 NDAC^ 0 0 71 571 50 bf 10111111 0 1 0 1 0 0 1 0 IFCv 0 0 5 565 800 94 10010100 0 1 0 1 0 0 1 1 ??? DAV^ 0 0 0 0 300 94 10010100 0 1 0 1 0 1 1 1 NRFD^ 0 0 0 0 350 94 10010100 0 1 0 1 0 1 0 1 NDACv 0 0 0 0 100 94 10010100 0 1 0 1 0 1 0 0 DAVv 0 0 0 0 100 94 10010100 0 1 0 1 0 1 1 0 NDAC^ 0 0 0 0 50 94 10010100 0 1 0 1 0 0 1 0 NRFDv 0 0 0 136 900 94 10010100 1 1 0 1 0 0 1 0 PP-B EOI^ 0 0 0 0 100 0 00000000 1 1 0 1 0 0 0 0 PP-R NDACv 0 0 0 1 900 0 00000000 1 1 0 1 0 0 1 0 PP-R NDAC^ 0 0 0 6 900 0 00000000 1 1 0 1 0 0 0 0 PP-R NDACv 0 0 49 51 400 80 10000000 1 1 0 1 0 0 0 0 PP-R 0 0 0 16 250 80 10000000 0 1 0 1 0 0 0 0 PP-E EOIv 0 0 0 0 100 80 10000000 0 1 0 1 0 0 1 0 NDAC^ 0 0 0 108 450 df 11011111 0 1 0 1 0 0 1 1 ??? DAV^ 0 0 0 0 300 df 11011111 0 1 0 1 0 1 1 1 NRFD^ 0 0 0 0 350 df 11011111 0 1 0 1 0 1 0 1 NDACv 0 0 0 0 100 df 11011111 0 1 0 1 0 1 0 0 DAVv 0 0 0 0 100 df 11011111 0 1 0 1 0 1 1 0 NDAC^ 0 0 0 0 50 df 11011111 0 1 0 1 0 0 1 0 NRFDv