feature request: enable GAL22V10 and GAL16V8 I/O/Q pins to be used as inputs

[lynchaj]

Hi This issue is a feature request to enable using GAL22V10 and GAL16V8 I/O/Q pins as inputs. Presently, the input-only pins can be used as inputs and the I/O/Q pins can only be used as outputs. While this works fine in most situations, there are some designs which require the I/O/Q pins to be configured as inputs and this requested feature would provide that flexibility. According to the datasheets, the GALs support using the I/O/Q pins as inputs.

Thank you very much for writing and supporting the Digital simulator program. I very much enjoy using it and it is a worthy free/open alternative to using proprietary PLD design software.