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IBM PC ROM Dumps to Complete Collection

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    IBM PC ROM Dumps to Complete Collection

    Here is all I need:

    1. Original IBM 4/24/81 BIOS w/ BASIC (a 64K dump of F000 on would do via debug.)

    2. 8K IBM CGA/MDA Font ROM (plug it into the empty ROM socket of the 5150 and dump it via debug.)

    I have every other important ROM of the PC era. This includes later 5150s, XT (3 versions), AT (3 versions), XT 286, PCJr., PCJX, EGA and VGA.
    My Retro Computing and Vintage Gaming Blog : http://nerdlypleasures.blogspot.com/

    #2
    1. Original IBM 4/24/81 BIOS w/ BASIC (a 64K dump of F000 on would do via debug.)
    Maybe Erik can help you. According to http://www.vintage-computer.com/ibm_pc.shtml, he has two 5150s, one of which has "version 1.0 ROMs".

    2. 8K IBM CGA/MDA Font ROM (plug it into the empty ROM socket of the 5150 and dump it via debug.)
    File attached.
    Attached Files

    Comment


      #3
      That is a nice collection. What are you doing to make that collection available to other people, especially those doing emulator development?

      Comment


        #4
        It's possible that there are no 4/24/81 versions out there. Can you confirm that this ROM was on any production systems? What production dates had this version of ROM? It's possible that this was an internal / prototype version of the ROM.
        @ BillDeg:
        Web: vintagecomputer.net
        Twitter: @billdeg
        Youtube: @billdeg
        Unauthorized Bio

        Comment


          #5
          Originally posted by mbbrutman View Post
          That is a nice collection. What are you doing to make that collection available to other people, especially those doing emulator development?
          I pretty much have what I need, and I will gladly distribute it to emulator authors if they want it and others if they need to replace some ROMs. Still, I know that there is a 4/24/81 BIOS out there somewhere... My collection is not quite complete without it.
          My Retro Computing and Vintage Gaming Blog : http://nerdlypleasures.blogspot.com/

          Comment


            #6
            Originally posted by Great Hierophant View Post
            I pretty much have what I need, and I will gladly distribute it to emulator authors if they want it and others if they need to replace some ROMs.
            I'm interested... Sendt you a PM (is it just me, or does it happens that some PM's never arrives?).

            [I'll see if I have any abilities to dump my MDA ROM. If I try to do it on my XT, the checksum would problably fail, but I got a NIC with a ROM socket I could try to use.](See below)

            *Edit*
            I just figured that the MDA and CGA uses the same ROM...
            Last edited by per; September 26, 2008, 11:16 AM.
            Current systems owned by me:
            Vintage:IBM PC/XT submodel 087 ( 1983 ), [Kon]tiki-100 rev. C (1983), Compaq Portable I ( 1984 ), IBM PC/XT submodel 078 ( 1985 ), IBM PC/XT286 ( ~1986 ), 3x Nintendo Entertainement Systems ( 1987 ).
            Obsolete:Commodore A500 ( ~1990 ), IBM PS/2 model 70/386 type 8570-161 ( 1991 ), Atari Lynx II ( ~1992 ), Generic Intel 486SX PC ( ~1993 ), AT/T Globalyst Pentium w/FDIV bug MB ( 1994 ), Compaq 486DX4 laptop ( ~1995 ).

            Comment


              #7
              Originally posted by per View Post
              I'm interested... Sendt you a PM (is it just me, or does it happens that some PM's never arrives?).

              [I'll see if I have any abilities to dump my MDA ROM. If I try to do it on my XT, the checksum would problably fail, but I got a NIC with a ROM socket I could try to use.](See below)

              *Edit*
              I just figured that the MDA and CGA uses the same ROM...
              How can they? The MDA font has double the number of lines per character cell.
              Offering a bounty for:
              - A working Sanyo MBC-775 or Logabax 1600
              - Music Construction Set, IBM Music Feature edition (has red sticker on front stating IBM Music Feature)

              Comment


                #8
                Originally posted by Trixter View Post
                How can they? The MDA font has double the number of lines per character cell.
                The ROM in the MDA and CGA cards have the same IBM part number.
                Experience tells me that because of the shared IBM part number, the ROMs will have the same contents, but I admit that I haven't done an actual comparison.
                Maybe to cut production costs, IBM designed the ROM contents so that the one ROM was common to the MDA and CGA.

                Comment


                  #9
                  Originally posted by Trixter View Post
                  How can they? The MDA font has double the number of lines per character cell.
                  It's an 8k ROM. The MDA uses the font in the first 4k. The CGA uses one of the two fonts in the second 4k. Easy

                  Comment


                    #10
                    Originally posted by JohnElliott View Post
                    It's an 8k ROM. The MDA uses the font in the first 4k. The CGA uses one of the two fonts in the second 4k. Easy
                    I have just done the following:
                    1. Downloaded the ROM from this thread
                    2. Opened it in a hex editor
                    3. Used my DHTML hex-to-picture converter (at Pixelzise=1) ( http://www.cemetech.net/programs/ind.../hexaicon4.zip ) to transform the ROM data to pictures.
                    4. Used print-screen and the paste function in MS-Paint to get the image data as BMP.
                    5. cut out only the font-images and paste them organized in it's own paint window.
                    6. Repeated step 3 to 5 until the whole ROM was transfered to Paint
                    7. Used Paint to put the MDA font together (top part on top of lower part)
                    8. Remove the two unused lines of MDA font and algined CGA font so it get organized.

                    9. The result is this (the ZIP contains the more accurate BMP version):
                    Clm 1 = Data from offset base 0000h combined with data from offset base 0800h
                    Clm 2 = Data from offset base 1000h
                    Clm 3 = Data from offset base 1800h
                    All those numbers are 8 bytes/character, so to get the offset for the character you want, you must add CharacterNumber*8 to the offset
                    Attached Files
                    Last edited by per; April 28, 2009, 04:13 AM.
                    Current systems owned by me:
                    Vintage:IBM PC/XT submodel 087 ( 1983 ), [Kon]tiki-100 rev. C (1983), Compaq Portable I ( 1984 ), IBM PC/XT submodel 078 ( 1985 ), IBM PC/XT286 ( ~1986 ), 3x Nintendo Entertainement Systems ( 1987 ).
                    Obsolete:Commodore A500 ( ~1990 ), IBM PS/2 model 70/386 type 8570-161 ( 1991 ), Atari Lynx II ( ~1992 ), Generic Intel 486SX PC ( ~1993 ), AT/T Globalyst Pentium w/FDIV bug MB ( 1994 ), Compaq 486DX4 laptop ( ~1995 ).

                    Comment


                      #11
                      Okay, after several contributions, I have what I believe to be the nearly complete set of IBM PC ROMs:

                      IBM PC 5150 BIOS & BASIC (5 Files Each, 40KB Total)
                      10/19/81
                      10/27/82

                      IBM Video (1 File Each)
                      IBM CGA/MDA FONT
                      IBM EGA BIOS
                      IBM VGA BIOS

                      IBM PC/XT 5160 BIOS & BASIC (2 Files Each, 64KB Total)
                      11/08/82 (Also IBM PC Portable 5155)
                      01/10/86
                      05/09/86

                      IBM PC AT 5170 BIOS & BASIC (2 Files Each, 64KB Total)
                      01/10/84
                      06/10/85
                      11/15/85

                      IBM PC/XT 286 5162 BIOS & BASIC (2 Files Each, 64KB Total)
                      04/21/86

                      IBM PC Convertible 5140 BIOS & BASIC (1 File Each, 64KB Total)
                      09/13/85 BIOS & BASIC

                      IBM PCjr. 4860 BIOS & BASIC (1 File Each, , 64KB Total)
                      06/01/83

                      IBM PC JX BIOS & BASIC (1 File Each, , 64KB Total)
                      03/15/85

                      I also have the Firmware ROMs for the PGC and the 3270 PC. All I am missing is the 4/24/81 PC BIOS.
                      My Retro Computing and Vintage Gaming Blog : http://nerdlypleasures.blogspot.com/

                      Comment


                        #12
                        5160 hard disk controllers

                        Have you thought about the ROMs on the Xebec-made hard disk controllers used in the 5160?

                        Comment


                          #13
                          Originally posted by modem7 View Post
                          Have you thought about the ROMs on the Xebec-made hard disk controllers used in the 5160?
                          A good point. I believe the Xebec 1210 board used an 8KB ROM in its first (10KB ST-412) revision and a 4KB ROM in its second (20MB ST-225) revision. Mueller reports that IBM actually wrote the BIOS for these boards, so they would be of immense value.

                          IBM's Combination Fixed Disk and Diskette Controller would not need a separate BIOS because the drive tables would be contained in the system BIOS. Some XTs may have come with a Western Digital controller, but they may have been aftermarket or even in-store replacements for the slow Xebec.
                          My Retro Computing and Vintage Gaming Blog : http://nerdlypleasures.blogspot.com/

                          Comment


                            #14
                            Xebec hard disk controllers for 5160

                            I have three variations of the board, and have captured the contents of the IBM ROM from each one.

                            Variation #1

                            IBM part number 1501492. This is the early version of 1501492.
                            It has mostly discrete TTL chips, and has 4 potentiometers. No switches. Mine is dated 1983.

                            The IBM ROM is 8K in size and stamped with IBM part number "5000059".
                            The ROM contains the string of "5000059 (C)COPYRIGHT IBM 1982".
                            The 8 bit checksum is 00 (with the last byte obviously adjusted to get 00).

                            Variation #2

                            IBM part number 1501492. More modern version of variation #1. No switches. Mine is dated 1984.

                            The IBM ROM is 8K in size and stamped with IBM part number "6359121".
                            Although using a different part number, the contents are identical to the 5000059 ROM used in variation #1.

                            Variation #3

                            IBM part number 62X0776. Has switches. Mine is dated 1986.
                            The IBM ROM is 4K in size and stamped with IBM part number "62X0822".

                            The ROM contains the string of "559X7291 (C) COPYRIGHT IBM CORP.,1982 ,1985.".
                            The 8 bit checksum is 00 (with the last byte obviously adjusted to get 00).
                            .
                            Attached Files

                            Comment


                              #15
                              Much obliged
                              My Retro Computing and Vintage Gaming Blog : http://nerdlypleasures.blogspot.com/

                              Comment

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