• CPU replacement for Commodore +4 /16/116 with additional 512 kB memory upgrade  compatible with Hannes 256kB RAM

Generall install notes:

• remove CPU
• insert 6502plus4 module ( WATCH FOR ORIENTATION!!)
• Ready !
• to get 256kB - Remove old dram, solder cas signal to CAS of removed drams 
• example Commodore C16: point indicated by red arrow below

Please click and view image in above carousel to see in full size!!!

CAS signal is present:

• pin 15 of 1bit memory chips ( 8 pieces at motherboard)
• pin 16 of 4bit memory chips ( 2 pieces at motherboard)