🚀 go-pugleaf

In article <1992Apr9.223816.1466@panix.com> schuster@panix.com (Michael Schuster) writes:
>In article <1992Apr7.004707.29179@athena.cs.uga.edu> mcovingt@athena.cs.uga.edu (Michael A. Covington) writes:
>>
>>Parallel ports are much faster than serial ports, which is why the
>>external disk drive connects to the parallel port rather than the
>>serial port.
>>
>I've noticed on the specs of the Trantor parallel port-to-SCSI adaptor that
>writes (i.e. output from the parallel port) are twice as fast as reads
>("input" via the parallel port). Does this mean the "input" is kludged?
>

It means that reads use the 4 control-input bits as inputs, taking 2 operations
per byte. Writes use the 8 output bits in one go and are therefore twice as fast. 
The remaining control-output bits are used to control the data transfer.

-adrian

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Adrian Godwin                                        (agodwin@acorn.co.uk)