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MSDebug changes, and lDebug


This week I finally got back to MSDebug, my fork of the debugger included in the 2018 free software release of MS-DOS version 2. I also worked some on lDebug, my debugger based on FreeDOS Debug/X.

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2023-05-29 16:33:00 +0200 May Mon · ecm · 0 Comments

HP 95LX write protect error

Yesterday I was greeted with a "write protect error" on drive A: of the HP 95LX, the SRAM card.

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2023-05-29 15:21:23 +0200 May Mon · ecm · 0 Comments

Mid May work: lDebug DI IN, 2023 May TSR updates, unix2dos, AMIS review upcoming


In mid May, I worked some on the debugger and picked and adapted several changes to all the TSRs, and increased the TSRs' private versions to 1.20. All documentation text files (.txt) in were adjusted to use CR LF line endings (unix2dos).

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2023-05-21 18:38:25 +0200 May Sun · ecm · 0 Comments

Mid May work on Einsicht and dokuwiki backup, AMIS/TSR teaser


This week Einsicht got some development, and an additional backup was set up for the pushbx blog.

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2023-05-16 18:19:14 +0200 May Tue · ecm · 0 Comments

Wrong inputs

On two occasions I have been asked, — "Pray, Mr. Babbage, if you put into the machine wrong figures, will the right answers come out?" In one case a member of the Upper, and in the other a member of the Lower, House put this question. I am not able rightly to apprehend the kind of confusion of ideas that could provoke such a question.

Charles Babbage, Passages from the Life of a Philosopher (1864), ch. 5 "Difference Engine No. 1"

Copied for the blog from

2023-05-11 18:56:36 +0200 May Thu · ecm · 0 Comments

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blog/pushbx.txt · Last modified: 2022-04-19 14:24:13 +0200 Apr Tue by ecm