lkpalwaJul 30, 20201 minULA reverse engineering - ULA5RA087ULA project is on track again, see Mods & Hacks for PDF doc, first version of reverse engineering of ULA5RA087 done! 😊 Check it out, com...
lkpalwaJul 26, 20201 minMemory Mapper Design - Updated incorrect PDFMemory Mapper Design - PDF updated, wrong schematics for the MAPPER_D0D1_EA14EA15_LOGIC schematics See Mods & Hack section for download
lkpalwaMar 4, 20201 minFinal Guide to RTC support published in Mods & Hacks1 Mars 2020 - PDF added with schematics and full investigation of the RTC logic and also non documented chips on-board investigated and e...
lkpalwaFeb 27, 20202 minMAPPER_L1L7_LOGICThis 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. (d...
lkpalwaFeb 24, 20202 minMAPPER_D0D1_EA14EA15_LOGICThis part of the design that handles the EA14 and EA15 line out, and the D0-D3 (this are BIDIR lines) data lines with backward annotation...
lkpalwaFeb 23, 20201 minMAPPER_RW_RW_LOGICHow does the RW/WR logic to the mapper works? If all input signal to 8 input NAND are H output will be L otherwise combination it will be...
lkpalwaFeb 23, 20202 minFirst Embryo of a Generic Memory mapper, limited to 256KBIn my search for the mapper to the SVI738 i came a cross different mapper, schematics and information how people have solved this, but my...
