Posted By
MMS
on 2017-04-16
02:11:40
 |  Re: Transfer cable
Good old "type in" method 
Seriously, the IEC serial cable would be the best, but the complex protocol and CPU timing makes it hard.
As you also know, the 1541 IEC cable to PC also need very precise timing.
The User port of Plus/4 fits the most, because as soon as the Plussy set to wait state, it will generate an IRQ, when new data arrived on the input line.
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