DOS ain't dead

DMA buffer size 0 causes trouble in v5.70 (Announce)

posted by Japheth , Germany (South), 13.02.2008, 08:40

> Is this a bug ? Or, why did it work in earlier versions and doesn't in
> 5.70 ?

Yes, of course it is a bug (although I think that a DMA buffer size of 0 might cause problems on many systems. Usually one should have at least a DMA buffer of 12 kB to be able to read one track of the FD).

And it worked in previous versions simply because this bug has been introduced in v5.70. In this version, XMS/I15 blockmoves have been made reentrant, which required some changes in page table "management", and the new "manager" obviously isn't as experienced as the old one. But I guess he finally will learn to do his job better.

---
MS-DOS forever!

Complete thread:

• Jemm v5.7 ... - Japheth, 30.01.2008, 12:55 (Announce)
  • Jemm v5.7 ... - Steve, 30.01.2008, 15:38
    • Jemm v5.7 ... - Japheth, 30.01.2008, 16:52
      • Jemm v5.7 ... - sol, 31.01.2008, 02:38
        • Jemm v5.7 ... - Japheth, 31.01.2008, 11:19
          • Jemm v5.7 ... - jassenna, 08.02.2008, 04:36
            • Jemm v5.7 ... - rr, 08.02.2008, 09:53
            • Jemm v5.7 ... - Japheth, 08.02.2008, 12:32
              • Jemm v5.7 ... - jassenna, 09.02.2008, 04:37
                • Jemm v5.7 (HIRAM) - Rugxulo, 13.02.2008, 01:54
                  • Jemm v5.7 (HIRAM) - jassenna, 13.02.2008, 07:03
              • Jemm v5.7 ... - jassenna, 10.02.2008, 22:05
                • DMA buffer size 0 causes trouble in v5.70 - Japheth, 11.02.2008, 09:10
                  • DMA buffer size 0 causes trouble in v5.70 - jassenna, 13.02.2008, 07:09
                    • DMA buffer size 0 causes trouble in v5.70 - Japheth, 13.02.2008, 08:40
  • Jemm v5.71 ... - Japheth, 25.02.2008, 08:31