The owner of a memory block is a 16-bit word. It is set to zero to indicate a free block. A non-zero value is normally the PID (process identifier) of the owner, that is, the address of the PSP of the owning process. This is important when a process terminates, because DOS automatically frees all memory blocks that the process owned. Note that DOS performs no validity checks on the owner; any process can free or resize any block, regardless of who owns it, and the MCB owner need not be a valid PID.
Language & RealityDec 2025
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В Финляндии предупредили об опасном шаге ЕС против России09:28
AMD’s reputation as an off-brand companyThere seems to be a conception that AMD, at this stage in the late 1980s and early 1990s, was a second-tier, off-brand chip maker. This has more to do with the effectiveness of Intel’s marketing than anything AMD was doing. AMD was not a stranger to the enterprise market. When you look at teardowns of 1970s and 1980s minicomputers, you frequently find AMD chips like the AMD2900 series ALUs inside them. The IT managers who shunned AMD CPUs in the 1990s most likely used AMD technology earlier in their careers on minicomputers without having any idea.