ArcadEd
Member
Yes, I am still tackling this super off road issue. I want my game back running and there seems to be a large collection of people out there with dead track pack boards.
I have 2 ICs on my board currently that I have a question about.
Page 32 of the manual. http://www.crazykong.com/manuals/SuperOffRoad.man.pdf
U9 (PAL20L10 http://www.datasheetcatalog.org/data.../497022_DS.pdf)
U10 (LS374 http://www.datasheetcatalog.org/data.../74ALS373N.pdf)
Hitting these two ICs with my probe I get no reading from pins 4,5,6 on the PAL
and no reading on Pins 3,4,7.8 (all data inputs) on the 374.
I have continuity to the Z80 CPU. I followed the schematics (above page 32) and checked the pins.
So I don't know if there should always be a reading there, or only when a game or demo mode starts up. Since this board just sits at a scrambled screen. I thought there should be some reading on the Data Inputs on the 374 since there is a reading on the corresponding outputs.
Please help. Thanks.
Ed
I have 2 ICs on my board currently that I have a question about.
Page 32 of the manual. http://www.crazykong.com/manuals/SuperOffRoad.man.pdf
U9 (PAL20L10 http://www.datasheetcatalog.org/data.../497022_DS.pdf)
U10 (LS374 http://www.datasheetcatalog.org/data.../74ALS373N.pdf)
Hitting these two ICs with my probe I get no reading from pins 4,5,6 on the PAL
and no reading on Pins 3,4,7.8 (all data inputs) on the 374.
I have continuity to the Z80 CPU. I followed the schematics (above page 32) and checked the pins.
So I don't know if there should always be a reading there, or only when a game or demo mode starts up. Since this board just sits at a scrambled screen. I thought there should be some reading on the Data Inputs on the 374 since there is a reading on the corresponding outputs.
Please help. Thanks.
Ed
