On Donnerstag 20 August 2009, Ullrich von Bassewitz wrote: > I've a somewhat strange problem however: It seems that the CIA1 TOD clock > needs a write to the 10th of seconds register to start running. This is > independent of my program: If I use the IO command to check the registers, > they're stuck until my program runs - and they won't change when my program > is done. Is this a problem with my VICE version (I have 1.19 wich is really > old)? > > I know that when writing the time, the clock gets stopped until the 10th of > seconds register is written, so not completing such a sequence will stop > the clock. But I cannot imagine that the C64 kernal does something like > this? when reading the time, the current status of hour/min/sec/10th sec will get latched when you read the hour, and the registers will no more change until you read the 10th sec register. so simply read hour first, 10th sec last :) (writing to the registers does not affect this behaviour btw) -- http://www.hitmen-console.org http://magicdisk.untergrund.net http://www.pokefinder.org http://ftp.pokefinder.org Hard work has a future payoff. Laziness pays off now. ---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo@musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.Received on Fri Aug 21 01:12:42 2009
This archive was generated by hypermail 2.1.8 : 2009-08-21 01:12:44 CEST