Works here as a CLOAD with B version Basic, C would not have been out when the 800 was released, will try C just incase...
CLOAD, remember basic on the 800 setting is an attach special cart / Basic as it was not built in, may be the cause of the 143
C also seemed to work, CLOAD, mini load happens, RUN, message to run game when loaded and run and it works. Having autoboot tapes on when they are BASIC ones isn't great, just hit reset to get to basic and load that way or turn Autoboot tapes off for BASIC ones..
Edited by Mclaneinc, Fri Mar 29, 2019 12:56 PM.