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Reading 9 track tape driveOh legacy! 1. First set the block size to variable mt -f /dev/stx setblk 0 2. rewind the tape mt -f /dev/stx rewind
3. copy the files using input block size =512 (still don't know how to find out the ibs? any idea?) dd if=/dev/stx of=/myfate ibs=512 count=3 // imagining a file to be occupying 3 blocks of 512 bytes. write a loop to copy all files.
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SE/LVD/HVD SCSI and how to diffrentiateQuick reference SE-> Single Ended SCSI HVD-> High Voltage Differential LVD-> Low Voltage Differential
The voltage between the DIFFSENSE pin (#16) and Ground Pin (pin 50) can give an idea about the SCSI type from the SCSI peripheral under test. In a 68 pin SCSI Female connector, Pin # 16 is DIFFSENSE ( in HVD and LVD/MSE devices, whereas it is ground in SE devices) For differentiating between devices :- measure voltage between pin #50 (GND) and pin # 16 If voltage > 2.4 volts, then it is HVD. If voltage < 0.5 V, it is SE If 0.7 v < voltage < 1.9 v, it is LVD/MSE
The 50 pin Amphenol Male connector (centronics type) has pin #11 as Diffsense and Pin #16 as ground. (for M4 9 track drives round-reel) |