Re: strange clock card

[jon@i-manila.com (Jon Co)]

thanks, i got the manual.  Card still works, but no battery, any idea
how many volts?  I think it powers a set of TTL chips so could be 5
volts, but not sure.
Also, anyone got any sample code for installing a clock routine in
prodos 8? (making a .sys program or something that relocates to a safe
spot and installing the jmp in BF09) where does the built-in
thunderclock reader reside? can i patch a copy of prodos and overwrite
this area?