At 11:24 AM 4/10/2000 -0500, you wrote:
>Yes, all the socketed chips were verified in my other working Black Widow
>board. Plus I did checksums on all the roms (just to doublecheck) and they
>were fine. Sockets were also verified and cleaned. If I knew what/where
>generated the text, I might be able to concetrate my search.......
I did some poking around and found this on Jess' site:
->Alpha/numerics Coding: I know that this is the format for Major Havoc,
->but I haven't checked the validity on any other games yet. I assume
->that they are all the same though! First a little background. The
->Alpha/Numerics are stored in a lookup table in the vector roms. The
->table contains calls to the appropriate drawing subroutine which is
->a two byte instruction (JSR instruction). The order of the table and
->it's contents are shown during the crosshatch/alpha/numerics screen
->of the self test, so you can see for yourself. [Space]=00 0=02 1=04
->2=06 ect.... after 9 is A and after Z are various puctuations marks
->(these don't exist in older games. If the letter is the last in its
->string the high order byte of it's code is set to one making the code
->negative, this way the game doesn't need any lenghth data for each
->string.
->
->EXAMPLE: 00 02 04 86 Prints- 012 Notice the code for "2" is now 86
Also, I loaded Jess' Vector ROM Viewer program and found the text to be in the Vector ROM 136010-x10 at location L7. I would concentrate my efforts around this chip if I were you.
Jon
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Received on Mon Apr 10 14:36:29 2000
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