Hi,
One more opinion on this topic. I don't think it's a good idea that the UMBs are chained into the main MCB chain.
UMBs are different from other memory blocks. For instance, if you are using EMM386 to provide UMBs, you may get troubles with DMA because of the mismatch of linear and physical addresses. This is the sort of reasons why most of the programs provide /NOHI switches and such to avoid being loaded high.
Thus, we might get into troubles if the UMBs are inserted into the main MCB chain, as it might be that current DOS algorythms allocate some memory unavoidably high.
Aitor
Alain escribió:
tom ehlert escreveu:
if the a000 block is ever merged into the lower memory area, interesting things might happen.
I remember one for instance: it was possible with a MDA to have 704k lower memory. Not interesting anymore, after the advent of VGA.
So, my vote is that any workaround is as good as a fix for something that will never get used ;-)
Alain
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