From: Marko Mäkelä (marko.makela_at_hut.fi)
Date: 2004-01-23 20:57:51
Hi all,
Today, I spent some time debugging a development version of c2nload,
the 38400 bps auto-starting fastloader for the C2N232 adapter. The
program displays a progress meter. It has to be implemented differently
for each major platform:
- On POSIX termios, I set up alarm(2) and catch SIGALRM. The write(2)
system call will be interrupted after the predetermined timeout, and
it will report the number of bytes sent until the interrupt.
- On Win32, a write timeout is specified with the SetCommParams function.
- On AmigaOS, I haven't figured out a solution. When a CMD_READ
operation is aborted, the field io_Actual reports the number of bytes
read so far. However, with CMD_WRITE, no matter if I do AbortIO and
WaitIO, or CheckIO, or nothing, the field remains zero. Is there a
solution? I tried Google, but didn't find any applicable code.
Another thing is that the Amiga we used for testing occasionally crashed
when the program was executed several times. It could be a hardware
problem, but I'm not sure. Are there any Amiga and C2N232 owners who
could help?
Marko
PS: I've implemented a KIM-1 tape decoder in "c2n", which already encodes
and decodes Commodore and Oric tapes. Once I complete the encoder, I'll
release the program.
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