main:
read 10, led
SEROUT porta.2,T9600,[led]
end

you realise the chr's 0,1,255 {all the likely eprom values you expect} are unprintable , there is nothing special or different about 16f690 eprom

SEROUT porta.2,T9600,[#led] or
SEROUT porta.2,T9600,[dec led]
is whats required