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H316: Fix host interface word counts.

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The host interface uses the UDP packet format from the modem
interface, with an additional flags word.  Ensure the flags are
not included in the word count.
This commit is contained in:
Lars Brinkhoff 2021-10-18 14:25:59 +02:00
parent 06a8447d26
commit 3baaf6c028
1 changed files with 4 additions and 1 deletions
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5
H316/h316_hi.c
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@ -344,7 +344,7 @@ void hi_start_tx (uint16 line, uint16 flags)
tmp [0] = flags;
for (i = 0; i < count; i ++)
tmp [i + 1] = M [next+i];
ret = udp_send(PDEVICE(line), PHIDB(line)->link, tmp, count);
ret = udp_send(PDEVICE(line), PHIDB(line)->link, tmp, count + 1);
free (tmp);
if (ret != SCPE_OK && ret != 66) hi_link_error(line);
}
@ -438,6 +438,9 @@ void hi_poll_rx (uint16 line)
return;
}
// Exclude the flags from the count.
count--;
// We really got a packet! Update the DMC pointers to reflect the actual
// size of the packet received. If the packet length would have exceeded the
// receiver buffer, then that sets the error flag too.