folkert/simh-testsetgenerator
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Updated HP2100 modules from Dave Bryan

Browse source
This commit is contained in:
Mark Pizzolato 2012-12-29 06:32:03 -08:00
parent 122ca9b7cd
commit 9d2811d666
3 changed files with 61 additions and 11 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

43
HP2100/hp2100_bugfixes.txt
View file

@ -1,6 +1,6 @@
HP 2100 SIMULATOR BUG FIX WRITEUPS
==================================
Last update: 2012-12-17
Last update: 2012-12-28
1. PROBLEM: Booting from magnetic tape reports "HALT instruction, P: 77756
@ -6350,3 +6350,44 @@
called for a non-VMA program.
STATUS: Fixed in version 4.0-0.
249. PROBLEM: RESTORing a previously SAVEd session fails if the 12792C
multiplexer is attached.
VERSION: 3.9-0
OBSERVATION: If the MPX device has a listening port attached when a
session is saved, attempting to restore that session results in a "Unit not
attachable" error.
CAUSE: The MPX attach routine only allows attachment to unit 0, i.e.,
ATTACH MPX <port>, but the actual attachment is made to the Telnet poll
unit (unit 9). As SAVE finds the port attached to unit 9, RESTORE attempts
to reattach it to unit 9.
RESOLUTION: Modify "mpx_attach" (hp2100_mpx.c) to allow attachment to unit
9 only during a RESTORE.
STATUS: Fixed in version 4.0-0.
250. PROBLEM: DEASSIGNing the TBG device generates a debug warning.
VERSION: 3.9-0
OBSERVATION: When running the simulator under a debugger, entering the
command DEASSIGN TBG prints "warning: Invalid Address specified to
RtlFreeHeap."
CAUSE: The TBG logical name is specified statically in the DEVICE
structure, but "deassign_device" calls "free" on the pointer. The
developer's manual does not state that the logical name must be dynamically
allocated, but deassigning assumes that it was.
RESOLUTION: Modify "clk_reset" (hp2100_stddev.c) to allocate the logical
name during a power-on reset.
STATUS: Fixed in version 4.0-0.

7
HP2100/hp2100_mpx.c
View file

@ -25,6 +25,7 @@
MPX 12792C 8-channel multiplexer card
28-Dec-12 JDB Allow direct attach to the poll unit only when restoring
10-Feb-12 JDB Deprecated DEVNO in favor of SC
Removed DEV_NET to allow restoration of listening port
28-Mar-11 JDB Tidied up signal handling
@ -2058,6 +2059,9 @@ return SCPE_OK;
unit is not allowed, so we first enable the unit, then attach it, then
disable it again. Attachment is reported by the "mpx_status" routine below.
A direct attach to the poll unit is only allowed when restoring a previously
saved session.
The Telnet poll service routine is synchronized with the other input polling
devices in the simulator to facilitate idling.
*/
@ -2066,7 +2070,8 @@ t_stat mpx_attach (UNIT *uptr, char *cptr)
{
t_stat status = SCPE_OK;
if (uptr != mpx_unit) /* not unit 0? */
if (uptr != mpx_unit /* not unit 0? */
&& (uptr != &mpx_poll || !(sim_switches & SIM_SW_REST))) /* and not restoring the poll unit? */
return SCPE_NOATT; /* can't attach */
mpx_poll.flags = mpx_poll.flags & ~UNIT_DIS; /* enable unit */

10
HP2100/hp2100_stddev.c
View file

@ -26,8 +26,9 @@
PTR 12597A-002 paper tape reader interface
PTP 12597A-005 paper tape punch interface
TTY 12531C buffered teleprinter interface
CLK 12539C time base generator
TBG 12539C time base generator
28-Dec-12 JDB Allocate the TBG logical name during power-on reset
18-Dec-12 MP Now calls sim_activate_time to get remaining poll time
09-May-12 JDB Separated assignments from conditional expressions
12-Feb-12 JDB Add TBG as a logical name for the CLK device
@ -98,7 +99,7 @@
idle time. The console poll is guaranteed to run, as the TTY device cannot
be disabled.
The clock (time base generator) autocalibrates. If the CLK is set to a ten
The clock (time base generator) autocalibrates. If the TBG is set to a ten
millisecond period (e.g., as under RTE), it is synchronized to the console
poll. Otherwise (e.g., as under DOS or TSB, which use 100 millisecond
periods), it runs asynchronously. If the specified clock frequency is below
@ -393,7 +394,7 @@ DEVICE clk_dev = {
NULL, NULL, &clk_reset,
NULL, NULL, NULL,
&clk_dib, DEV_DISABLE,
0, NULL, NULL, "TBG"
0, NULL, NULL, NULL
};
@ -1191,6 +1192,9 @@ if (sim_switches & SWMASK ('P')) { /* initialization reset?
clk_error = 0; /* clear error */
clk_select = 0; /* clear select */
clk_ctr = 0; /* clear counter */
if (clk_dev.lname == NULL) /* logical name unassigned? */
clk_dev.lname = strdup ("TBG"); /* allocate and initialize the name */
}
IOPRESET (&clk_dib); /* PRESET device (does not use PON) */