Attention this style is ugly by the nature of CGA graphics.
Finally, after weeks I just gonna publish this... It's bad, I know but is someone have any advice about how to improve it I be really grateful, I tried 30 or 40 different parameters and captions and I'm not still near close to do justice to the CGA era, so use it at your own risk of burning your retina.
Usage:
I cannot say there is a correct way to use it, I got some results using DreamshaperXL at strength 1 CFG 7 42 steps but probably there is some room to improve.
Use the keyword: doscga style at the start of your prompt to enable it.