From: groepaz (groepaz_at_gmx.net)
Date: 2001-11-05 20:51:09
Hello Ullrich, UvB> Using "-t none" for the linker, one may specify the start address by using "-S UvB> addr" which means that no linker config is needed. oh didnt know that...but...no....i am just slowly adapting my code-libs to 'real' libraries so i better forget this again ASAP ;=P UvB> You are right in some way. I've had to learn that many Commodore people seem UvB> to be rather old fashioned, maybe this is why they are still using the old UvB> machines. YES! ;=P (atleast i am not useing edit.com at work hehehehe ,=)) >> 115200bps actually work pretty fine even using polling operation only >> (didnt bother writing an irq-based driver yet) UvB> Polling is not a good idea because you may loose characters when doing things UvB> like outputing a "\n" which makes the screen scroll. The current driver (which UvB> is based on sources written by Craig Bruce) uses interrupts for receiving and UvB> polls for sending. And even this means that when sending, the driver may not UvB> reach the full baud rate, so it's one of the "change as soon as possible" UvB> things. err?! why does polling incorporate bad handshake? ;=) 16bytes FIFO should give more than enough time to raise RTS in time (maybe its a problem with the AICA having no fifo, but its definetly not with the 16c550) not achiving the max. possible baudrate is another issue though... its just that my implmentation,beeing a debug-stub, shouldnt use more memory than necessary so disallowing a recieve-buffer... also it can work without irq or nmi which is definetly a nice thing in this situation ,=) i get about 8k/sec though, which i think aint that bad anyway. -- Best regards, groepaz mailto:groepaz_at_gmx.net ---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo_at_musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.
This archive was generated by hypermail 2.1.3 : 2001-12-14 22:05:43 CET