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Opening a Conventional Memory can of worms

Hello fellow retrocompusers :D We all know and remember well DOS' limitations in managing RAM. What I always wanted, as a kid in the early 90s, was an "LH"-like program that would load WHATEVER.EXE/COM upper in the RAM. Only, instead of squeeze-loading it in the tiny ~300KB UMB area, it would load …

Re: Ati Mach64 performance in DOS and Windows 3.11?

I prefer working with SCSI as unlike IDE the adaptor has its own BIOS so that I can easily move my storage between different systems. Don't bother with BIOS disk configuration, all sorts of geometry translation issues, size limits, booting problems, etc. Just plug and boot. A kind of like XTIDE. As …

Re: Ati Mach64 performance in DOS and Windows 3.11?

No because v6 is narrow SCSI-2 device which peaks at 10MB/s. So pretty much any PCI/VLB/EISA SCSI adaptor is good enough. Unless it is caching one which tends to slow things down. Gotcha. And does it make sense to have any SCSI controller as opposed to PIO MODE 4 EIDE or even UATA 33 or 66 or 133 …

Re: Difficult choices on various cards, video, controllers, EIDE, SCSI, BUS speed, DOS, Win 3.xx, etc.

You're not explicit about the platform, but I'm assuming 486 with VIP-IO given the options, and given the DX4-120 you seem to want to run it at 40MHz. For a 486, best performance is acheived with VLB with zero wait-states. That usually means max 33MHz, maybe 40MHz very, very rarely 50MHz. At 40MHz, …

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