Re: Replacing Tailgunner ROMs

Carlos, I flashed two new TMS2532JL chips using your two files .6RS and .6U and plugged them into a known good CCPU (my Rip Off board set) at sockets T7 & P7and fired it up and it works perfectly. I tried the board in my Star Castle and it looks great. I could not play it of course because SC doesn't have the proper controls. By the way, the files that you sent to me are named for the wrong pair of sockets. They do not run in U7 & R7.

The chip enable (PD/PGM input at pin 20) for the chip is tied low on the normal unhacked CCPU so it's good to go as well. It is not required to pull out pin 21 and connect it to +5V. According to the datasheet, that would reduce the chip power usage but not necessarily disable the outputs. I tried it both ways just for fun and the game worked fine both ways. I would not bother to change pin 21. If someone knows a good reason why it should be done, please correct me.

Now, to make the chips work in locations U7 & R7 where your CCPU board has sockets, I just had to make new files by swapping the upper and lower half of the data in each chip. I flashed a couple of new chips, plugged them into U7 and R7 and it worked great.

I was going to attach the new rom files for U7 & R7 to this email but I don't want someone crabbing at me about copyright violations or something so if anyone wants them, just email me privately and I'll send them to you.

Or, you can do like Matthew suggested and make your own two 4k files from the original four 2k files thusly...
C:>copy /b tg.r7 + tg.p7 tg4k_odd.r7 <enter>
and
C:>copy /b tg.u7 + tg.t7 tg4keven.u7 <enter>

William Boucher
http://www.biltronix.com
  ----- Original Message -----
  From: Carlos Rubio
  To: vectorlist@vectorlist.org
  Sent: Friday, January 18, 2013 7:36 PM
  Subject: Re: VECTOR: Replacing Tailgunner ROMs

  Thanks Matt.

  On my board I have ribbon cables from the daughter board plugged into R7 and U7 (these are labeled 6RS and 6 U on the board). P7 and T7 are unpopulated on my board, so I'll have to install sockets to follow your directions.

  However, I did get a hold of rom images today that are labeled 6RS and 6U. Can I use those?

  Carlos

  On Fri, Jan 18, 2013 at 6:43 PM, Matthew Rossiter <matt@rossiters.com> wrote:

    You can download a copy of WinRomident to verify the rom names.

    P70 = P7
    P71 = R7
    T70 = T7
    T71 = U7

    So...

    c:\copy /b tgunner.p70 + tgunner.p71 <whatever file name you want> - put in P7 socket

    then

    c:\copy /b tgunner.t70 + tgunner.t71 <whatever file name you want> - put in T7 socket

    pull up pin 21 of your 2532 and solder a wire to +5v (pin24) - I always use TMS2532's

    Should work. I've done the same thing for War of the Worlds since it works in Star Castle.

    Matt

    On 1/18/2013 10:25 AM, John Robertson wrote:

      Carlos Rubio wrote:

        Hello,

        I'm trying to convert a Tailgunner CCPU to accept two 2532s instead of the daughter board with the eight 2708s. I plan on following Matt Rossiter's procedure as described here:

        http://www.vectorlist.org/Vectorlist/2004/12/0000.html

        My first problem is that I can't find the ROMs as described in Matt's instructions. What I have are four files named tgunner.p70, tgunner.p71, tgunner.t70 and tgunner.t71.

        Can someone tell me how these should be combined? Should it be tgunner.p70 + tgunner.p71 and tgunner.t70 + tgunner.t71, or tgunner.p70 + tgunner.t70 and tgunner.p71 + tgunner.t71?

        Thanks,

        Carlos

      I've sent Carlos my two archive files of Tailgunner. One appears to be four 2K X 8 files with a readme, the second is two 4K X 8 which may be ROM images.

      I just don't know - but he is welcome to play with them and report back!

      John :-#)#

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Received on Wed Jan 23 00:09:17 2013