ULA project is on track again, see Mods & Hacks for PDF doc, first version of reverse engineering of ULA5RA087 done! 😊 Check it out,...

Memory Mapper Design - PDF updated, wrong schematics for the MAPPER_D0D1_EA14EA15_LOGIC schematics See Mods & Hack section for download

1 Mars 2020 - PDF added with schematics and full investigation of the RTC logic and also non documented chips on-board investigated and...

This module will handle the L1-L7 out to the DRAM, we will also handle the extra A7 refresh line that in PHILIPS design is called ‘A7....