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XTIDE Universal BIOS

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    #91
    Apparently it supports, tertiary, quaternary and even quinternary ide controllers.
    "Will the Highways on the internets become more few?"

    V'Ger XT

    Comment


      #92
      Originally posted by Anonymous Coward View Post
      With SCSI at D800 and XTIDE at DC00, it doesn't seem to matter which drive I select to boot from, it will boot from the SCSI drive either way, in both cases displaying the "not ready" message for drive D (xtide).
      With SCSI at D800 and XTIDE at D000, the system boots to the IDE drive regardless of what is selected in the menu, only the SCSI drive is still accessible as drive D.
      Drive swapping was disabled to minimize conflicts with SCSI swapping. Here is scsitest3. It is the same as the previous but now drive swapping and interrupts (IRQ 14) are enabled. I'd like to know what changes.

      Comment


        #93
        Originally posted by k2x4b524[ View Post
        so the XT-IDE bios supports tertiary ide controllers aswell?
        It supports up to 5 controllers at any port. v1.0.0_RC2 supports dual port 8-bit transfers (XTIDE) and normal 16-bit transfers. v1.1.0 is going to support 32-bit transfers for VLB and PCI controllers and single port 8-bit transfers.

        Comment


          #94
          This custom BIOS behaves exactly as the previous one, except in the case where the XTIDE BIOS loads prior to the SCSI BIOS, it now reads "error" and refuses to boot when you select the SCSI disk from the boot menu.
          "Will the Highways on the internets become more few?"

          V'Ger XT

          Comment


            #95
            and all of this packed into one small 8-bit card. I am truly impressed
            Nothing beats the roar of a 36yr old drive coming to life after a decade in storagg

            Comment


              #96
              Finally time to release XTIDE Universal BIOS v1.1.0 (first stable release).
              Changes since v1.0.0_RC2:
              • Lite and full operating modes
              • Diagnostic cylinder no longer has to be reserved
              • Slave drives again work without master present
              • 32-bit transfers for VLB and PCI IDE controllers
              • 16- and 32-bit transfers are enabled on all builds
              • Boot menu hotkeys for all drives
              • Drive swapping is handled separately for floppy and hard disk drives so it is now possible to install DOS to any hard disk from any floppy drive
              • INT 13h,AH=15h return value in DL now longer gets corrupted by drive swapping
              • Rewritten drive detection and lots of code cleaning
              • Longer timeout when detecting first drive
              • Minimum number of floppy drives can be specified if autodetection fails
              • Maybe other changes that i have forgotten

              XTIDE Universal BIOS v1.1.0 configuration and flashing program (idecfg.com)
              • Now works as a generic EEPROM flasher
              • Improvements to configuration menus
              • SDP can be completely disabled


              The zip file now has readme.txt with some sort of documentation. Don't expect new features any time soon. I'll fix bugs if any are found but now i just want to play some old games.

              Source codes will be released real soon. First i need to find out how to get them to Google code or SourceForge.

              Comment


                #97
                Here are some changes that i forgot to mention:
                • CHS parameters can now be specified by user (works like on the old BIOSes where you had to set the parameters manually)
                • Simple and system boot loaders can be used instead of boot menu
                • Detects full size for LBA48 drives


                I'm going to use google code to host the project and GPL would probably be the best license. Should i use v2 or v3 of the GPL?

                Comment


                  #98
                  Originally posted by aitotat View Post
                  [snip]
                  Should i use v2 or v3 of the GPL?
                  Hi! Excellent work! Thanks! I suggest GPL v2 as it is far less problematic IMO. GPL v3 overreached and introduced a bunch of unnecessary problems. You may want to consider the BSD licence since it is very flexible and can be distributed as GPL but not necessarily vice versa.

                  Thanks and have a nice day!

                  Andrew Lynch

                  Comment


                    #99
                    Here are the source codes. I decided to use GPL v2.

                    Comment


                      Originally posted by aitotat View Post
                      I can send sources to anyone that wants it as long as any modifications will be send back to me. XTIDE Universal BIOS is written in 100% Assembly using Nasm syntax. It compiles with Nasm and Yasm (i recommend Nasm since Yasm has a buggy CPU directive).
                      Can you tell me what version of NASM you use?

                      Thanks, Bill

                      Comment


                        Originally posted by wrljet View Post
                        Can you tell me what version of NASM you use?
                        v2.08.01 (latest stable version at the moment). Yasm and old versions of Nasm cannot be used at the moment. Nasm 2.xx automatically converts near (16-bit offset) conditional jumps to short (8-bit offset) conditional jump + unconditional jump for 286 and older that do not support near conditional jumps. I don't like the automatic conversion at all. I found out about the conversion too late so now i need to fix the few remaining near conditional jumps (and maybe switch back to Yasm).

                        Comment


                          Da-Bump
                          Nothing beats the roar of a 36yr old drive coming to life after a decade in storagg

                          Comment


                            I read the start of the thread but i could not figure out how your XT ide bios is working, is this a replacement bios for mothercards with ide?
                            My XT have no onboard ide, is there even such monsters?
                            But my XT have an ADP50L idecontroller could your bios replace the bios on the ADP50L?
                            I also have an 8-bit networkcard with empty socket but the connector is on the ADP50L?

                            Could your XTide bios be of any use for me using bigger CF on ide port?
                            Right now i think my ADP50L support up to 520 MB using ide to CF converter.

                            JT

                            Comment


                              I read the start of the thread but i could not figure out how your XT ide bios is working, is this a replacement bios for mothercards with ide?
                              First and foremost, it's a BIOS for the XTIDE controller card. I'm surprised you've not heard about it.
                              http://www.wiki.vintage-computer.com.../XTIDE_project

                              However, the BIOS can easily be changed to support 16 bit IDE controllers too. The zip file containing the BIOS images have both XT and AT (8 bit and 16 bit) BIOS images.

                              But my XT have an ADP50L idecontroller could your bios replace the bios on the ADP50L?
                              I know I did a disassembly of that controller's BIOS, but I don't remember if that's the one that uses memory mapped IO, or standard IO. I think it was memory mapped, thus the universal BIOS would *not* work on that card. The source code is available though, so it could be modified to work.
                              Please note I could be totally wrong about the ADP50L.

                              I also have an 8-bit networkcard with empty socket but the connector is on the ADP50L?
                              That's a perfectly fine solution, in fact, it's a great solution for IDE controllers that are on the motherboard (on the AT based machines-very few XT machines have onboard IDE)
                              You would need to disable the BIOS on the ADP50L and put the XTIDE BIOS on a chip and put it in the network card. I've done this on a 386 machine of mine with a 3com NIC and an old promise IDE controller.

                              Could your XTide bios be of any use for me using bigger CF on ide port?
                              Right now i think my ADP50L support up to 520 MB using ide to CF converter.
                              Yes. This bios supports drives up to 137GB, although DOS is only going to see 8.4G of it. Either way, that's more than enough!

                              Comment


                                There is now a wiki page for XTIDE Universal BIOS instructions on google code. There is also a wiki page containing drive compatibility tables.

                                I hope to receive results from CF cards and microdrives since some of them do not work as slave drives and some of them requires MBR to be re-created before they can be booted. These are drive limitations and not issues with XTIDE Universal BIOS. I hope that the compatibility list could eventually be used for finding best possible drive to use with XTIDE.

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