These changes facilitate more robust parameter type checking and helps
to identify unexpected coding errors.
Most simulators can now also be compiled with a C++ compiler without
warnings.
Additionally, these changes have also been configured to facilitate easier
backporting of simulator and device simulation modules to run under the
simh v3.9+ SCP framework.
If the nested indirect/execute limit (INDMAX, XCTMAX) is set to 0, the simulator will loop indefinitely in an indirect address or execute loop, testing for interrupts before each memory reference. Thus, on an infinite loop, the simulator will never complete the instruction, but the instruction is interruptible. So for example, under TOPS-10:
.r ddt
1/ 0 jrstf @1
1$g
^C
^C
.
The JRSTF will never finish, but it can be interrupted by any device, and double ^C will return control to the command line.
If INDMAX or XCTMAX is non-zero, the previous behavior of limiting loops to a specific depth is retained. However, the default value is now 0.
This closes issue #218.
Conflicts:
doc/pdp10_doc.doc
Vector values contained in device information blocks are the true bus relative vector values. CPU specific biased vector values are produced by the respective vector fetching logic and vector values are limited to 9 bits with <1:0> = 0 as specified in both the Unibus and Qbus documents.
This capability will allow a GDB RSB stub to be created to support dynamic debugging of code running in a simulator.
This capability will also allow a complete front panel emulation system to operate a simulator.
This capability is engaged in a simulator by:
sim> set remote telnet=remoteconsoleport#
sim> set console telnet=consoleport#
sim> set remote master
Master mode will provide a TCP session which accepts SCP commands that allow full control of the simulator.
The goals here being to simplify calling code while getting consistent output delivered everywhere it may be useful.
Modified most places which explicitly used sim_log or merely called printf to now avoid doing that and merely call sim_printf().
This is the results of external KDP development activities. The KDP side done by Timothe Litt and DMC and DUP by Mark Pizzolato
Additionally, other PDP10 updates from Timothe Litt
PDP11/pdp11_io_lib.c: In function 'show_iospace':
PDP11/pdp11_io_lib.c:363: warning: too few arguments for format
PDP10/pdp10_lp20.c: In function 'lp20_set_vfu_type':
PDP10/pdp10_lp20.c:1038: warning: implicit declaration of function
'toupper'
PDP10/pdp10_lp20.c:1121: warning: implicit declaration of function
'isspace'
Show IOSPACE doesn't always get the number of devices right due to device creativity.
o The distinction between UNIT and DEVICE has blurred
o MUX devices merge several physical devices into one device/unit
o Dynamic device sizing has made things more volatile.
This edit solves the problem for SHOW IOSPACE by adding an (optional) word to the DIBs.
The word contains the amount of IO space consumed by each instance of the physical device that's being emulated.
E.G., if it's a DZ11, the device is the DZ11 module, or 8 lines, even though the MUX device may support 32.
This enables SHOW IOSPACE to determine the number of physical devices being emulated, which is what folks need when configuring software. The word may have other uses - in a generic dynamic device sizing routine - which is why the amount of IOSPACE per device was chosen rather than the 'number of physical devices.'
The edit should not make any existing device regress. If the new word (ulnt) is zero (not initialized), SHOW IOSPACE will default to the number of units in the device, or if there's no device (CPUs), 1 as before. If it is present, the number of devices is the calculated as total allocation/allocation-per-device.
The edit updates all the devices that seem to require this treatment, and all the processors that define the UNIBUS/QBUS DIBs.
EA calc of interrupt instructions is an extension by SimH, and performed incorrectly. Indirect references are resolved in current context, not exec mode.
Since the Console Execute emulation takes advantage of this extension, correct it to calculate the EA in EXEC mode.
Add Optical VFU support
Correct some inconsistencies with the hardware.
Add documentation and help.
Flush output file after 10 seconds of idleness to allow external watchers/processors to access entire job without forcing a simulator halt or detach/attach.
Make CR return to column 0, not column 1.
Make DAVFU contents accessible via SHOW.
Initialize RAM structures on power-up reset, but not reboot.
Implement keep-alive and os-requested reload functions of FE.
Preserve HW config flags during (re-) boot.
Allow IPL30 device to interrupt.
Add 18-bit DMA functions.
Implement DMA to/from I/O space.
Optimize DMA memory mapping - once per page, not once per byte.
Teach SHOW IO to report vectors and BR levels as well as CSR addresses.
Add DUP and KDP to Autoconfigure table.
