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Newer MicroVAX and VAXStations: Rate limit DZ device character output

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This commit is contained in:
Mark Pizzolato 2019-10-20 23:01:45 -07:00
parent 281837c68a
commit 0ca1fe4e40
1 changed files with 15 additions and 8 deletions
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19
VAX/vax4xx_dz.c
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@ -240,7 +240,7 @@ t_stat dz_attach (UNIT *uptr, CONST char *cptr);
t_stat dz_detach (UNIT *uptr);
t_stat dz_clear (t_bool flag);
uint16 dz_getc (void);
void dz_putc (int32 line, uint16 data);
t_stat dz_putc (int32 line, uint16 data);
void dz_update_rcvi (void);
void dz_update_xmti (void);
t_stat dz_set_log (UNIT *uptr, int32 val, CONST char *cptr, void *desc);
@ -458,8 +458,7 @@ switch ((pa >> 2) & 03) { /* case on PA<2:1> */
sim_debug(DBG_REG, &dz_dev, "maint char for line %d : %X\n", line, dz_char[line]);
break;
}
dz_putc (line, dz_tdr);
sim_activate (&dz_unit[1], dz_unit[1].wait);
sim_activate (&dz_unit[1], 0);
}
break;
}
@ -504,15 +503,23 @@ return SCPE_OK;
t_stat dz_xmt_svc (UNIT *uptr)
{
int32 line;
line = CSR_GETTL (dz_csr);
if (SCPE_STALL != dz_putc (line, dz_tdr)) { /* sent ok? */
tmxr_poll_tx (&dz_desc); /* poll output */
dz_update_xmti (); /* update int */
}
else
sim_activate (uptr, dz_unit[1].wait); /* come back later */
return SCPE_OK;
}
/* Put a character to the specified line */
void dz_putc (int32 line, uint16 data)
t_stat dz_putc (int32 line, uint16 data)
{
t_stat r = SCPE_OK;
int32 c;
TMLN *lp;
@ -527,7 +534,7 @@ switch (dz_func[line]) {
case DZ_CONSOLE:
c = sim_tt_outcvt (data, TT_GET_MODE (dz_unit[0].flags));
if (c >= 0)
sim_putchar_s (c); /* send to console */
r = sim_putchar_s (c); /* send to console */
break;
case DZ_KEYBOARD:
@ -538,7 +545,7 @@ switch (dz_func[line]) {
vs_wr ((uint8)data); /* send to mouse */
break;
}
return;
return r;
}
/* Get first available character for mux, if any */