4 layers108 × 25.3 mm

64MB SIMM
herzmx/cps3-nos
CPS3 NOS is an alternative to the original SIMMs for CPS3; currently, the available options include clone SIMMs with old-stock FLASH memory and Ultra SIMMs by DS.
39 parts12
Boards in 1 GitHub repository, designed in KiCad, that use the 74LVC827AD by Nexperia (-40℃~+125℃ 1.65V~3.6V 10 2.9ns@3.3V,50pF 24mA 24mA 40uA 74LVC Tri-State SO-24-300mil Buffers, Drivers, Receivers, Transceivers ROHS). See how each wires it, with its parts, size, README and files; the 74LVC827AD’s symbol, footprint and pinout are on its own page.

herzmx/cps3-nos
CPS3 NOS is an alternative to the original SIMMs for CPS3; currently, the available options include clone SIMMs with old-stock FLASH memory and Ultra SIMMs by DS.