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Hi, have an Apple IIe at home with a strange issue. Text mode is weird while graphics are Ok, 

 

Roms have been tested Ok (CD-EF and Video), Kernel is Ok and ram also, anyone have seen this issue ?

 

IOU or any other custom chip faulty ?

 

 

iie1.jpg

iie2.jpg

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So more swapping.

 

MMU / IOU / PAL-HAL / Keyboard Rom and all chips already socketed... no effect.

 

i have a hunch on the 74LS374...anyone knows how the TEXT mode is generated on the Apple II ?

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