Microsoft really should go back and look into open sourcing more of their really old tools. Get versions of MASM, QuickBasic, VisualBasic (the DOS version, of course), and so forth out there.
There's a lot to learn from these old tools and it'd be nice to have this stuff opened up for tinkerers on ancient platforms. It's not like MS is going to make any money off any of this anymore, nor is it viable for use on a modern platform even with substantial effort.
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