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PDP11, VAX, KS10: Speed up Chaosnet polling when there is traffic.

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This commit is contained in:
Lars Brinkhoff 2023-11-13 12:28:37 +01:00 • committed by Paul Koning
parent 1ed26cfb0e
commit 7797344bf9
1 changed files with 14 additions and 7 deletions
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19
PDP11/pdp11_ch.c
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@ -278,7 +278,7 @@ void ch_validate (const uint8 *p, int count)
sim_debug (DBG_TRC, &ch_dev, "Checksum: %05o\n", chksum); sim_debug (DBG_TRC, &ch_dev, "Checksum: %05o\n", chksum);
} }
void ch_receive (void) int ch_receive (void)
{ {
size_t count; size_t count;
const uint8 *p; const uint8 *p;
@ -286,10 +286,10 @@ void ch_receive (void)
tmxr_poll_rx (&ch_tmxr); tmxr_poll_rx (&ch_tmxr);
if (tmxr_get_packet_ln (&ch_lines[0], &p, &count) != SCPE_OK) { if (tmxr_get_packet_ln (&ch_lines[0], &p, &count) != SCPE_OK) {
sim_debug (DBG_ERR, &ch_dev, "TMXR error receiving packet\n"); sim_debug (DBG_ERR, &ch_dev, "TMXR error receiving packet\n");
return; return 0;
} }
if (p == NULL) if (p == NULL)
return; return 0;
sim_debug (DBG_PKT, &ch_dev, "Received UDP packet, %d bytes\n", (int)count); sim_debug (DBG_PKT, &ch_dev, "Received UDP packet, %d bytes\n", (int)count);
if ((status & RXD) == 0) { if ((status & RXD) == 0) {
@ -308,6 +308,8 @@ void ch_receive (void)
if ((status & LOST) < LOST) if ((status & LOST) < LOST)
status += 01000; status += 01000;
} }
return 1;
} }
t_stat ch_rd (int32 *data, int32 PA, int32 access) t_stat ch_rd (int32 *data, int32 PA, int32 access)
@ -410,11 +412,16 @@ t_stat ch_wr (int32 data, int32 PA, int32 access)
t_stat ch_svc(UNIT *uptr) t_stat ch_svc(UNIT *uptr)
{ {
sim_clock_coschedule (uptr, 1000); if (ch_lines[0].conn) {
if (ch_receive ()) {
sim_activate_after (uptr, 300);
return SCPE_OK;
}
} else {
if (tmxr_poll_conn (&ch_tmxr) != -1) if (tmxr_poll_conn (&ch_tmxr) != -1)
ch_lines[0].rcve = TRUE; ch_lines[0].rcve = TRUE;
if (ch_lines[0].conn) }
ch_receive (); sim_clock_coschedule (uptr, 1000);
return SCPE_OK; return SCPE_OK;
} }