Parallel Port Possible?

General discussions related to the Altair 8800 Clone

Parallel Port Possible?

Postby toml_12953 » July 6th, 2018, 3:04 pm

Would it be possible to update the Clone's firmware to let one of the serial ports to act like a parallel port? The OP paper tape reader looks cool even though I already have a high-speed reader/punch unit thanks to one of your earlier videos, Mike.
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Re: Parallel Port Possible?

Postby AltairClone » July 6th, 2018, 8:44 pm

The Clone already supports two of the common Altair parallel ports through a Clone serial port: The output and status port on the 88-LPC and the output and status port on the 88-C700. Similarly, it would not be difficult to “act like” the 88-PIO parallel interface board as well. However, electrically, it would still be a serial port, not a parallel port. It could not properly interface to a parallel device like the OP-80A paper tape reader.

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