On 2012-04-22, at 20:19, Ullrich von Bassewitz wrote: > On Sun, Apr 22, 2012 at 12:52:51AM +0200, Johan Kotlinski wrote: >> I was a bit surprised now that fwrite does not detect disk full. I.e., >> >> FILE* f = fopen("test", "w"); >> while(1 == fwrite(0xc000, 100, 1, f)); >> >> ...will create an infinite loop. Is that a bug, or supposed to work >> like that due to hardware limitations? > > It is probably a bug. > > Does anybody know how the disks on the serial bus flag a "disk full" > condition? Or other errors? fwrite uses write which in turn uses BSOUT. Errors > are checked by looking at the carry flag on return from BSOUT. This might be > wrong Out of my head - I recall that I needed to verify ST value on disk IO using CHROUT. I can't tell exactly why it was necessary (I don't remember anymore) but odds are good that exactly because otherwise errors like disk full could go unnoticed / unhandled. -- SD!---------------------------------------------------------------------- To unsubscribe from the list send mail to majordomo@musoftware.de with the string "unsubscribe cc65" in the body(!) of the mail.Received on Sun Apr 22 21:54:36 2012
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