07-08-2022, 09:27 PM
Has anyone gotten a WiModem232 to work with a Tandy Color Computer 1, 2, or 3? The mid-1980s ones, not the older TRS-80's.
The CoCo 1/2/3 have a Serial I/O port at the back. I'm not sure if anyone ever actually made a modem out of that - since I've read it's rather inefficient, and Tandy did sell a RS232 Pak (I think with a DB25 connector that was intended to connect over to a modem). I'm not sure if the RS232 had a UART, but in any case apparently it supported much higher speeds than the "Serial I/O" port at the back.
Still, I don't mind even being limited to 2400 baud - I'd like to just use the Serial IO port. I know PETTERM exist for the Commodore PET user-port (limited to 2400 baud), seems similar software should be possible for the Color Computer.
Maybe it's just a matter of finding/building the right 4-pin DIN to DB25 adapter cable?
There is a chart on page 12 of this document that describes the Color Computer 4-pin RS-232 output (and the document then also describes that RS-232 Pak):
Color Computer RS232 Communications (sparksandflames.com)
The CoCo 1/2/3 have a Serial I/O port at the back. I'm not sure if anyone ever actually made a modem out of that - since I've read it's rather inefficient, and Tandy did sell a RS232 Pak (I think with a DB25 connector that was intended to connect over to a modem). I'm not sure if the RS232 had a UART, but in any case apparently it supported much higher speeds than the "Serial I/O" port at the back.
Still, I don't mind even being limited to 2400 baud - I'd like to just use the Serial IO port. I know PETTERM exist for the Commodore PET user-port (limited to 2400 baud), seems similar software should be possible for the Color Computer.
Maybe it's just a matter of finding/building the right 4-pin DIN to DB25 adapter cable?
There is a chart on page 12 of this document that describes the Color Computer 4-pin RS-232 output (and the document then also describes that RS-232 Pak):
Color Computer RS232 Communications (sparksandflames.com)