This should work on all byte addressable host systems using GCC/clang to build.
The QEMU slirp code has been pried out of QEMU and stubs have been created to solve where the current slirp is entangled with the QEMU code. Ths slirp/simh directory contains all the necessary include and glue files to make this useful. Everything in the slirp directory is unmodified QEMU code.
Prior logic attempted to load the desired file from the current default directory and if that failed wrote the in memory boot code image to the desired file and then retried the desired load..
A user can still explicitly load a ROM image with a "LOAD -R romfile.bin" command prior to a BOOT attempt if they want to test or otherwise run with a different ROM.
Problem was the console storage output buffer was masked with a WMASK instead of a BMASK (it is only a 8 bit register).
Also, the input interrupt processing cleared the output interrupt state instead of the input interrupt state. This would only be a problem when interrupts are actually used instead of polled I/O.
This reverts commit 7c7b44e409.
The prior commit didn't work for static initializers. There are other ASCII dependencies in simh. They should all be solved together or not at all.
- Provide a sim_islower(), sim_isalpha(), sim_isprinit(), sim_isdigit(), sim_isgraph(), sim_isalnum() which make sure that the character being examined as an unsigned char.
- Ignore a UTF_BOM sequence at the beginning of command files.
- Provide a sim_isspace() which makes sure that isspace only considers the character being examined as an unsigned char.
- EXPECT will now tolerate a HALTAFTER=n parameter which delay the simulator stopping execution for n instructions. Unpredictable behavior will happen if multiple EXPECT conditions see matching data before the first actualy halt occurs.
- SEND has an AFTER=n argument which delays the initial stuffed data from being input for at least n instructions. It also has a DELAY=m argument which specifies the minimum number of instructions which must execute between stuffed input data.
- Changed run_cmd() to no longer clear pending breakpoint actions before starting instruction execution.
- Added a -Q switch to the commands which dispatch through run_cmd() (RUN, STEP, NEXT, GO, BOOT, etc.). This switch will suppress status output when execution stops. This will allow sequences of breakpoint action commands to silently execute when needed.
Ideas based on Dave Bryan's console halt efforts.
sim> SEND {<mux>:line} {DELAY=n,}"string"
Where <mux> is the name of the device pointed to by the TMXR structure. If <mux>:line isn't specified, then the console device is implicitly being referenced.
Delay is optional and once set persists for subsequent SEND operations to the same device. Delay defaults to 1000. The DELAY value is a minimum number of instructions which must execute before the next character in the provided string will be injected to the console port. The DELAY value has effect between the characters delivered as well. "string" requires quotes and within the quoted string, common C escape character syntax is available (\r\r\t, etc.).
Each device (console, and each line in each mux) has a separate value for DELAY.
An arbitrary number of 'expect' conditions can be defined. The command syntax is:
sim> EXPECT {<mux>:line} {[cnt]} "matchstring" {actioncommand {; actioncommand ...}}
Where <mux> is the name of the device pointed to by the TMXR structure. If <mux>:line isn't specified, then the console device is implicitly being referenced.
"matchstring" requires quotes and within the quoted string, common C escape character syntax is available (\r\r\t, etc.). The quotes used can be single or double quotes, but the closing quote must match the opening quote. The match string might be extended to allow the use of perl style regular expressions in the "matchstring" when a -R switch is specified on the command line.
sim> EXPECT "Enter Color: " SEND "Red\r"; g
A specific 'expect' condition can be removed with:
sim> NOEXPECT {<mux>:line} "matchstring"
All 'expect' conditions can be removed with:
sim> NOEXPECT {<mux>:line}
'expect' conditions can be examined with:
sim> SHOW EXPECT {<mux>:line}
Expect rules are one-shots (i.e. they disappear once a match has occurred) unless they are explicitly described as persistent with the -P switch.
The -C switch is available when defining expect rules. The effect of a rule defined with the -C flag is that when an expect match occurs for that rule, ALL rules are cleared for that device (console or <mux>:line).
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().
- Avoid assignments of void * values. Cast all memory allocation return values to appropriate types.
- Add output to sim_log where missing in various places.
- Fixed issue with lost file positions after a restore for devices which leverage the UNIT_SEQ flag.
sim> set debug -r -a -t -p somefile
-a produces seconds.msec time format
-t produces hh:mm:ss.msec time format
-r causes time values displayed to be relative to the wall clock time when the 'set debug' command was issued
-r by itself will cause default of -t
-a and -t can both be specified if desired
-p adds display of current PC value to the debug timestamp output
sim> show debug
