https://pushbx.org/ecm/dokuwiki/ 2026-06-10T14:55:03+00:00 https://pushbx.org/ecm/dokuwiki/ https://pushbx.org/ecm/dokuwiki/lib/tpl/dokuwiki/images/favicon.ico text/html 2025-01-07T22:52:18+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0107_how_to_create_an_iniload_file_carrying_a_dos_kernel?rev=1736286738&do=diff How to create an iniload file carrying a DOS kernel A user found that lDOS iniload was used in a certain boot image. After my answer identifying and describing iniload, the following question occurred in a comment: user pts, 2025-01-05 Building a native kernel The gold standard for building a complete, triple-mode kernel so that it is wrapped by lDOS iniload and optionally with an inicomp stage is text/html 2025-01-13T18:08:00+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0113_mid_december_up_to_early_january?rev=1736788080&do=diff Mid December up to early January 2025-01-12 inicomp Upload an older patch to add a -B switch to the testfile program. This causes it to run an int3 breakpoint right before calling depack. webecm Add news item for lDebug release 9. ldosboot Optimise iniload some. This includes one noteworthy instance of abusing call to push the offset of something on the stack and branch elsewhere. Trying to Proceed past this call (using lDebug's P command) will fail. text/html 2025-03-04T21:10:55+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0304_interlude_current_ldebug_startup_files?rev=1741119055&do=diff Interlude: Current lDebug startup files Something else for today: Because the Düssel-Café was closed for carnival last Sunday, today I want to list and discuss the ldebug.sld startup files that I have been using recently or not so recently. Plus, the scriptlet I use to enable booting different files in dosemu2 without having to move around a lot of files nor to re-configure dosemu2. This scriptlet allows to boot into lDebug's debugger command prompt rather than chainloading the FreeDOS kernel i… text/html 2025-09-29T18:07:48+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0929_drive_letters_beyond_z_merged_dosentry_and_doscode_disk_full_checks_trail_binary?rev=1759162068&do=diff Drive letters beyond Z:, merged DOSENTRY and DOSCODE, disk full checks, trail binary 2025-09-28 This week I took on the support for the six drive letters beyond Z:, making lDebug, devload, SRDISK, MS-DOS v7, lDOS, EDR-DOS, FreeCOM, and dosemu2 able to use them. I wrote about this text/html 2025-03-10T18:57:57+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0310_much_work_in_february/march?rev=1741629477&do=diff Much work in February/March 2025-03-09 As mentioned, last week I didn't get to write a proper blog post. So this one's about two weeks' worth of changes. SRDISK Fix the error handling in realloc_ems_handle. EMS doesn't set an error code in BL, and do not modify the indirect pages variable in case of error. inicomp Two changes to the test file program: text/html 2025-01-28T19:56:12+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0128_mid_late_january_work_enhanced_dr-dos_ldebug_lms-dos?rev=1738090572&do=diff Mid late January work (Enhanced DR-DOS, lDebug, lMS-DOS) 2025-01-26 Enhanced DR-DOS A user reported that PC-DOS command.com (after hacking its version check) didn't work correctly running a REN command on EDR-DOS. I was able to reproduce the error, and found that it was present in OpenDOS v7.01 already (but not in DR-DOS v6.00 or text/html 2025-12-21T18:15:44+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/1221_mid_december_last_regular_blog_post_of_2025?rev=1766337344&do=diff Mid December: Last regular blog post of 2025 2025-12-21 This is the last regular blog post of the year. There may be some irregular ones still. ident86 * Fix typos in the manual. * Fix screvid.but hyperlink to lead to the ident86 repo rather than lDebug's. Master Control Program * Add lDOS pre-boot loader to kernel payload, and allow loading it from the boot menu. text/html 2025-08-24T20:46:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0824_cleanup_indos_trampoline_ldos_kernel_work_in_august?rev=1756061169&do=diff Cleanup, InDOS, trampoline, INSTALLFIRST= lDOS kernel work in August 2025-08-24 wwwecm scripts * Add tlsfiles to update script. * Always run mak.sh of tlsfiles, even if no update has been pulled. * Make tlsfiles an update_as_dependency * Also run mak.sh for update_as_dependency tlsfiles This repo collects all build dl wwwecm .tls files and logs them into hg for public read access using hgweb. text/html 2025-12-23T21:41:09+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/1223_restoring_modified_files_from_nasm_listing_files?rev=1766522469&do=diff Restoring modified files from NASM listing files I accidentally reset a repo using the hg strip -f command, which destroys unsaved changes in the current working directory. I still had the original .lst listing files created by NASM, however. These turned out to be expressive enough to completely restore the deleted changes in this case. text/html 2025-09-14T17:48:05+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0909_early_september_work?rev=1757864885&do=diff Early September work 2025-09-07 fixupp To help port the default overlay manager of WarpLink to NASM, we had to use symbols starting with a dollar sign. But NASM didn't support those. (In the upcoming NASM v3.00 some support has been added.) To bridge this gap, I modified the trusty fixupp utility once again. It will now replace one or more leading "D." in section, class, or symbol names by a dollar sign each. text/html 2025-05-01T18:00:11+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0501_ms-dos_v3.40_versus_v4.00?rev=1746115211&do=diff MS-DOS v3.40 versus v4.00 I have recently referred to the "v3.40 branch" of MS-DOS. This refers to the v4.00 and v4.01 versions that are well known and that have shipped most sources in the 2024 April release. The v3.40 distinction is as opposed to the "European MS-DOS v4.00", "Multitasking MS-DOS", or text/html 2025-03-17T19:42:29+00:00 Anonymous (anonymous@undisclosed.example.com) https://pushbx.org/ecm/dokuwiki/blog/pushbx/2025/0317_mid_early_march_work?rev=1742236949&do=diff Mid early March work 2025-03-16 Only some updates to the lDOS kernel, and supporting tools. One changeset from last week uploaded to the lDebug repo. kernwrap Add an option to disable building of the version.com utility. This is needed to include the COM loader into ldos.com, which requires building version.com before this point.