I'm curious what ya'll think about this idea.
The Super Serial cards are really expensive on eBay currently so I'm looking around and thinking about alternatives.
Here is what I've been mulling the last few days. Looking for general opinions as well as specific technical references to help out with any of them.
Idea #1: Prototype card + 6551 chip
Basic idea is to buy a prototype card ($10) and put a 6551 chip ($7) on it, follow some existing designs out there
Pros: Very clean implementation, probably would "just work" with existing term software
Cons: ???
Idea #2: TTL to RS232 over Gameport
Basic idea is to implement the circuit discussed in the Apple II Redbook, starting on p114 ("A Simple Serial Interface"). This uses the I/O pins on J-14 to get TTL level output and then I would use an external TTL to RS232 converter.
Pros: Nothing to buy, easy to pin into the 16 pin gameport connector
Cons: Probably would NOT "just work" with existing SW
Thoughts?
The Super Serial cards are really expensive on eBay currently so I'm looking around and thinking about alternatives.
Here is what I've been mulling the last few days. Looking for general opinions as well as specific technical references to help out with any of them.
Idea #1: Prototype card + 6551 chip
Basic idea is to buy a prototype card ($10) and put a 6551 chip ($7) on it, follow some existing designs out there
Pros: Very clean implementation, probably would "just work" with existing term software
Cons: ???
Idea #2: TTL to RS232 over Gameport
Basic idea is to implement the circuit discussed in the Apple II Redbook, starting on p114 ("A Simple Serial Interface"). This uses the I/O pins on J-14 to get TTL level output and then I would use an external TTL to RS232 converter.
Pros: Nothing to buy, easy to pin into the 16 pin gameport connector
Cons: Probably would NOT "just work" with existing SW
Thoughts?