Re: asteroids vector/watchdog problems

I used a 2716 that was labeled as TMS 2716JL-45. I'm assuming the -45
means 450ns and this ROM will not make the grade?

I was just looking thru the r.g.v.a.c archives and I saw something about
not being able to use TMS 2716 roms on an Asteroids board. Is this correct?

Rodney

Rodger Boots wrote:
> Make sure the 2716 is fast enough (for example, a 450 nS part won't cut
> it).
>
>
> Rodney Minch wrote:
>
>> I've got an Asteroids board (version 06) that I've been trying to get
>> up and
>> running. To make a long story short, all new TL081's, TL082's and
>> 4016's in
>> the vector section of the board have been installed along with
>> sockets. I
>> also replaced one of the game rom's with a new 2716 since it didn't
>> verify,
>> replaced/socketed the (6) 2114 RAM's and replaced/socketed the DAC at B12
>> since it was causing some really jagged graphics in test mode.
>>
>> Right now the board watchdogs when in game mode. If I disable the
>> watchdog,
>> the game does nothing. In test mode it gives one beep and pushing any
>> of the
>> buttons on the control panel gives a beep also. The odd thing is, the
>> test
>> screen box only fills up the left hand side of the screen. Adjusting
>> the bips
>> on the game board doesn't move the box to the right, it only moves the
>> box off
>> the screen to the left. Here is a picture of what test mode looks like:
>>
>> http://debaser.net/asteroids_test.jpg
>>
>> The weird thing is, after fixing some bad traces early on, I was able
>> to get
>> the game running and I could play it but of course the vectors were
>> all messed
>> up although it did fill the entire screen. Then all of a sudden it
>> started
>> resetting again.
>>
>> I know everything in the cab is fine since my Asteroids Deluxe board
>> runs just
>> fine in this cab.
>>
>> Any ideas?
>>
>> Rodney
>>

---------------------------------------------------------------------------
** Unsubscribe, subscribe, or view the archives at http://www.vectorlist.org
** Please direct other questions, comments, or problems to chris@westnet.com
Received on Thu Jun 1 08:44:34 2006