by toml_12953 » November 29th, 2023, 3:51 pm
I just bought an Altair 88-2 SIOB on eBay. While I'm waiting for it to arrive, I'd like to figure out the interconnections to the Clone cassette interface.
If the photo in the ad is correct, right now the board I'm getting is set to
octal address 006, 110 baud, 2 stop bits, no parity, 8 bits/character.
I believe the address is OK.
I can change the baud rate to 300 with no problem.
Do I need to change the stop bits to 1?
8 bits/character should be OK, right?
About the connection to the Clone interface:
Since the SIOB is a TTL interface, I don't need to use the external DB-25 patch cable. When I use the Clone's interface as a serial port, it's 300 baud, correct?
For connection to the Clone board, I need a jumper between pins 2 & 4 of J2.
Are these connections correct?
SIOB STSO (Pin 10) to pin 4 on J1
SIOB SRSI (Pin 5) to pin 2 on J1
SIOB GND (Pin 4) to pin 5 on J1