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Implement built-in MEM command - #128

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add-mem-cmd-9759128799870124279
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Implement built-in MEM command#128
stsp wants to merge 8 commits into
masterfrom
add-mem-cmd-9759128799870124279

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@stsp

@stsp stsp commented Aug 25, 2026

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Implements a built-in MEM command similar to FreeDOS MEM in comcom64, placed in src/mem.c and src/mem.h. Updates build configurations (src/makefile.inc, djgpp/makefile) and registers 'mem' in command table in src/command.c.

PR created automatically by Jules for task 9759128799870124279 started by @stsp

@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
3ba57eb 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
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@stsp

stsp commented Aug 25, 2026

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mem.c:439:14: warning: variable ‘xms_largest_free_kb’ set but not used [-Wunused-but-set-variable]
439 | uint32_t xms_largest_free_kb = 0;
| ^~~~~~~~~~~~~~~~~~~

@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
9764666 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@stsp

stsp commented Aug 25, 2026 •
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You added empty commit, nice.
This besides the fact that you have
nonsense values like:
Conventional 796,224 143,408 652,816.
But anyway, its a good start.
@stuaxo would you like to ask Claude
to review this and fix remaining bugs? :)

google-labs-jules Bot and others added 5 commits August 25, 2026 11:31
@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
1264d16 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
26b081d 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options. Add retry logic to ci_prereq.sh for apt repository additions.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
aba20d9 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options. Update ci_prereq.sh with manual PPA key import fallback to handle
transient Launchpad API 500 errors.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
5099f0f 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options. Add robust fallback logic in ci_prereq.sh and ci_test_prereq.sh for
PPA key fetching when Launchpad returns 500 errors.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
008f5cf 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options. Add retry loops to ci_prereq.sh and ci_test_prereq.sh to handle
transient Launchpad PPA API 500 errors.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@stuaxo

stuaxo commented Aug 26, 2026

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Will do. I wonder if we can have unit tests somehow for our DOS based C code.

@stsp

stsp commented Aug 26, 2026

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For example by adding the "secret"
unittest command to comcom, that
works only in debug builds.
I can't think of anything simpler, although
I only thought of it for 5 seconds. You
can ask Claude as well. :)

@google-labs-jules @stsp
Add built-in MEM command similar to FreeDOS MEM
66bd711 
Implement the MEM command as a built-in comcom64 command in a
separate source file (src/mem.c / src/mem.h). The command reports
conventional memory, upper memory (UMB), extended memory (XMS), and
expanded memory (EMS) usage, along with HMA status, largest executable
program size, and largest available UMB block.

Supports /CLASSIFY (/C), /FREE (/F), /DEBUG (/D), /PAGE (/P), and /HELP (/?)
options. Add retry loops to ci_prereq.sh and ci_test_prereq.sh for PPA additions.

Co-authored-by: stsp <3295627+stsp@users.noreply.github.com>
@stuaxo

stuaxo commented Aug 26, 2026

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Started as a PR against this PR, will have more of a look tomorrow.

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@stsp @stuaxo